<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2024 Workiva-->
<!--r:30d51851-027b-41fb-ad59-d11115045ac8,g:5086ef66-a5e7-4450-bd93-45e0f1f4588c-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain"/>
  <link:arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:type="simple" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member"/>
  <link:roleRef roleURI="http://www.paylocity.com/role/UnauditedConsolidatedStatementofChangesinStockholdersEquity" xlink:type="simple" xlink:href="pcty-20240930.xsd#UnauditedConsolidatedStatementofChangesinStockholdersEquity"/>
  <link:definitionLink xlink:role="http://www.paylocity.com/role/UnauditedConsolidatedStatementofChangesinStockholdersEquity" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementLineItems_c9b6a4bd-d5f4-4079-808c-d511cdf946dd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_75bd5f9f-a97b-4c96-9add-8e4c2e0f1842" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_c9b6a4bd-d5f4-4079-808c-d511cdf946dd" xlink:to="loc_us-gaap_StatementTable_75bd5f9f-a97b-4c96-9add-8e4c2e0f1842" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_76d01202-fe56-4e6c-a1fd-38a1309c1cbf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_75bd5f9f-a97b-4c96-9add-8e4c2e0f1842" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_76d01202-fe56-4e6c-a1fd-38a1309c1cbf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_76d01202-fe56-4e6c-a1fd-38a1309c1cbf_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_76d01202-fe56-4e6c-a1fd-38a1309c1cbf" xlink:to="loc_us-gaap_EquityComponentDomain_76d01202-fe56-4e6c-a1fd-38a1309c1cbf_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_684c2058-19de-44e4-9b28-8d1620fe1320" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_76d01202-fe56-4e6c-a1fd-38a1309c1cbf" xlink:to="loc_us-gaap_EquityComponentDomain_684c2058-19de-44e4-9b28-8d1620fe1320" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_b6472250-48d5-4e0e-bfb8-879fa276c608" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_684c2058-19de-44e4-9b28-8d1620fe1320" xlink:to="loc_us-gaap_CommonStockMember_b6472250-48d5-4e0e-bfb8-879fa276c608" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_e81d8dd0-ccb7-4e5d-968f-2b08c40ed614" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_684c2058-19de-44e4-9b28-8d1620fe1320" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_e81d8dd0-ccb7-4e5d-968f-2b08c40ed614" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_72ebcb6b-aa3f-4755-af0d-d71f9b3bdd83" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_684c2058-19de-44e4-9b28-8d1620fe1320" xlink:to="loc_us-gaap_RetainedEarningsMember_72ebcb6b-aa3f-4755-af0d-d71f9b3bdd83" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_e3b04480-c954-41ec-80b7-c0c4d69860f2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_684c2058-19de-44e4-9b28-8d1620fe1320" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_e3b04480-c954-41ec-80b7-c0c4d69860f2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_451afe65-7dfd-43dd-8035-4543933b80fd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_c9b6a4bd-d5f4-4079-808c-d511cdf946dd" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_451afe65-7dfd-43dd-8035-4543933b80fd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_75334f50-32ac-4085-a0c1-4150941141f8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_451afe65-7dfd-43dd-8035-4543933b80fd" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_75334f50-32ac-4085-a0c1-4150941141f8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_b20e4fcd-32c4-4bfd-8ccd-17c5df1b621d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_451afe65-7dfd-43dd-8035-4543933b80fd" xlink:to="loc_us-gaap_StockholdersEquity_b20e4fcd-32c4-4bfd-8ccd-17c5df1b621d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_3eff95b3-8d29-48e6-a031-865cbb77efc2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_451afe65-7dfd-43dd-8035-4543933b80fd" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_3eff95b3-8d29-48e6-a031-865cbb77efc2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_e0da436d-6b7c-4b5c-a0e7-b432cb70be3c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_451afe65-7dfd-43dd-8035-4543933b80fd" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_e0da436d-6b7c-4b5c-a0e7-b432cb70be3c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_18182805-b258-4338-9feb-fad8adf93705" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_451afe65-7dfd-43dd-8035-4543933b80fd" xlink:to="loc_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised_18182805-b258-4338-9feb-fad8adf93705" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_StockIssuedDuringPeriodSharesEquityAwardVesting_e541b03c-631e-41d3-85c5-67d20b966e23" xlink:href="pcty-20240930.xsd#pcty_StockIssuedDuringPeriodSharesEquityAwardVesting"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_451afe65-7dfd-43dd-8035-4543933b80fd" xlink:to="loc_pcty_StockIssuedDuringPeriodSharesEquityAwardVesting_e541b03c-631e-41d3-85c5-67d20b966e23" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_NetSettlementForTaxesAndorExercisePriceRelatedToEquityAwardsInShares_5ecd3750-0db7-4f5c-b6ff-8e3546f7b464" xlink:href="pcty-20240930.xsd#pcty_NetSettlementForTaxesAndorExercisePriceRelatedToEquityAwardsInShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_451afe65-7dfd-43dd-8035-4543933b80fd" xlink:to="loc_pcty_NetSettlementForTaxesAndorExercisePriceRelatedToEquityAwardsInShares_5ecd3750-0db7-4f5c-b6ff-8e3546f7b464" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_NetSettlementForTaxesAndorExercisePriceRelatedToEquityAwards_efa1a329-ab6c-4986-8aaa-8eeb49f8fcdb" xlink:href="pcty-20240930.xsd#pcty_NetSettlementForTaxesAndorExercisePriceRelatedToEquityAwards"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_451afe65-7dfd-43dd-8035-4543933b80fd" xlink:to="loc_pcty_NetSettlementForTaxesAndorExercisePriceRelatedToEquityAwards_efa1a329-ab6c-4986-8aaa-8eeb49f8fcdb" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_84b03273-d82e-4161-834b-bdb4dde1202b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_451afe65-7dfd-43dd-8035-4543933b80fd" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_84b03273-d82e-4161-834b-bdb4dde1202b" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_4014a027-cca6-4840-9387-8e1017ea6051" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_451afe65-7dfd-43dd-8035-4543933b80fd" xlink:to="loc_us-gaap_NetIncomeLoss_4014a027-cca6-4840-9387-8e1017ea6051" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_ca6da705-0627-4480-81b3-7575d1de3013" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_e35d5adb-6107-4e24-87ce-e095e201951d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquity"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/RevenueDisaggregationDetails" xlink:type="simple" xlink:href="pcty-20240930.xsd#RevenueDisaggregationDetails"/>
  <link:definitionLink xlink:role="http://www.paylocity.com/role/RevenueDisaggregationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_e8c8c69d-71f2-419c-972e-de528fd05f02" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_54919725-4e54-422b-aa07-6cf5b3472f63" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_e8c8c69d-71f2-419c-972e-de528fd05f02" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_54919725-4e54-422b-aa07-6cf5b3472f63" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_b4533ecf-af1f-489f-9447-26dc90c36da2" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_54919725-4e54-422b-aa07-6cf5b3472f63" xlink:to="loc_srt_ProductOrServiceAxis_b4533ecf-af1f-489f-9447-26dc90c36da2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_b4533ecf-af1f-489f-9447-26dc90c36da2_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_b4533ecf-af1f-489f-9447-26dc90c36da2" xlink:to="loc_srt_ProductsAndServicesDomain_b4533ecf-af1f-489f-9447-26dc90c36da2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_dd5ac418-c37c-4198-b8e4-0396777572cc" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_b4533ecf-af1f-489f-9447-26dc90c36da2" xlink:to="loc_srt_ProductsAndServicesDomain_dd5ac418-c37c-4198-b8e4-0396777572cc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_RecurringFeesMember_b0e5f87f-f6b6-45aa-90c6-d8a064c6b9eb" xlink:href="pcty-20240930.xsd#pcty_RecurringFeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_dd5ac418-c37c-4198-b8e4-0396777572cc" xlink:to="loc_pcty_RecurringFeesMember_b0e5f87f-f6b6-45aa-90c6-d8a064c6b9eb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_ImplementationServicesAndOtherMember_e39ec8d3-6d57-457c-ad23-b5cd6ebc87d6" xlink:href="pcty-20240930.xsd#pcty_ImplementationServicesAndOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_dd5ac418-c37c-4198-b8e4-0396777572cc" xlink:to="loc_pcty_ImplementationServicesAndOtherMember_e39ec8d3-6d57-457c-ad23-b5cd6ebc87d6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_0ddb9ce3-30fe-4322-abcc-ea9af03d6dad" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_54919725-4e54-422b-aa07-6cf5b3472f63" xlink:to="loc_srt_RangeAxis_0ddb9ce3-30fe-4322-abcc-ea9af03d6dad" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_0ddb9ce3-30fe-4322-abcc-ea9af03d6dad_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_0ddb9ce3-30fe-4322-abcc-ea9af03d6dad" xlink:to="loc_srt_RangeMember_0ddb9ce3-30fe-4322-abcc-ea9af03d6dad_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_c6369183-b4bd-46ca-85b0-707baa37d697" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_0ddb9ce3-30fe-4322-abcc-ea9af03d6dad" xlink:to="loc_srt_RangeMember_c6369183-b4bd-46ca-85b0-707baa37d697" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_6a88f567-00ec-4dfd-8b6e-ccd0bf7db20e" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_c6369183-b4bd-46ca-85b0-707baa37d697" xlink:to="loc_srt_MaximumMember_6a88f567-00ec-4dfd-8b6e-ccd0bf7db20e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_CancellationNoticePeriod_f4887c5d-54e1-480a-b823-0cd0fdc2adbc" xlink:href="pcty-20240930.xsd#pcty_CancellationNoticePeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_e8c8c69d-71f2-419c-972e-de528fd05f02" xlink:to="loc_pcty_CancellationNoticePeriod_f4887c5d-54e1-480a-b823-0cd0fdc2adbc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_PeriodOfTermArrangement_93de44f5-ac1e-45fe-8e37-4deee1ac9983" xlink:href="pcty-20240930.xsd#pcty_PeriodOfTermArrangement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_e8c8c69d-71f2-419c-972e-de528fd05f02" xlink:to="loc_pcty_PeriodOfTermArrangement_93de44f5-ac1e-45fe-8e37-4deee1ac9983" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_ContractsWithCustomersAbstract_22f8b61f-f94d-400c-835f-e1ebafde122c" xlink:href="pcty-20240930.xsd#pcty_ContractsWithCustomersAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_e8c8c69d-71f2-419c-972e-de528fd05f02" xlink:to="loc_pcty_ContractsWithCustomersAbstract_22f8b61f-f94d-400c-835f-e1ebafde122c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_ade98348-8b52-4ac6-82ee-e2e0c699a7ce" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_ContractsWithCustomersAbstract_22f8b61f-f94d-400c-835f-e1ebafde122c" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_ade98348-8b52-4ac6-82ee-e2e0c699a7ce" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/RevenueDeferredRevenueDetails" xlink:type="simple" xlink:href="pcty-20240930.xsd#RevenueDeferredRevenueDetails"/>
  <link:definitionLink xlink:role="http://www.paylocity.com/role/RevenueDeferredRevenueDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_2be80bce-1266-40ac-9372-de4accdb5794" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_4702dac1-9717-46cc-9b09-8973b66a2556" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_2be80bce-1266-40ac-9372-de4accdb5794" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_4702dac1-9717-46cc-9b09-8973b66a2556" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_65f0fb40-f442-4c17-97d1-a38e3980183d" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_4702dac1-9717-46cc-9b09-8973b66a2556" xlink:to="loc_srt_RangeAxis_65f0fb40-f442-4c17-97d1-a38e3980183d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_65f0fb40-f442-4c17-97d1-a38e3980183d_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_65f0fb40-f442-4c17-97d1-a38e3980183d" xlink:to="loc_srt_RangeMember_65f0fb40-f442-4c17-97d1-a38e3980183d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_3b38eb22-a548-46ce-ad1c-e7bde410a71c" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_65f0fb40-f442-4c17-97d1-a38e3980183d" xlink:to="loc_srt_RangeMember_3b38eb22-a548-46ce-ad1c-e7bde410a71c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_5858b599-eb9e-45b6-9235-ae8bbca72532" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_3b38eb22-a548-46ce-ad1c-e7bde410a71c" xlink:to="loc_srt_MaximumMember_5858b599-eb9e-45b6-9235-ae8bbca72532" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_2d5e5343-f2e2-4dc1-8021-59c595015e0e" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_4702dac1-9717-46cc-9b09-8973b66a2556" xlink:to="loc_srt_ProductOrServiceAxis_2d5e5343-f2e2-4dc1-8021-59c595015e0e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_2d5e5343-f2e2-4dc1-8021-59c595015e0e_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_2d5e5343-f2e2-4dc1-8021-59c595015e0e" xlink:to="loc_srt_ProductsAndServicesDomain_2d5e5343-f2e2-4dc1-8021-59c595015e0e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_37553077-0a22-4c6e-9641-13462fe4f8ec" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_2d5e5343-f2e2-4dc1-8021-59c595015e0e" xlink:to="loc_srt_ProductsAndServicesDomain_37553077-0a22-4c6e-9641-13462fe4f8ec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_ImplementationServicesAndOtherMember_4ea4b1c4-984a-451a-991d-4a32f53607c8" xlink:href="pcty-20240930.xsd#pcty_ImplementationServicesAndOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_37553077-0a22-4c6e-9641-13462fe4f8ec" xlink:to="loc_pcty_ImplementationServicesAndOtherMember_4ea4b1c4-984a-451a-991d-4a32f53607c8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_AmortizationPeriodForNonRefundableImplementationFees_881ef2ce-6106-493a-bd29-8b71ad490d47" xlink:href="pcty-20240930.xsd#pcty_AmortizationPeriodForNonRefundableImplementationFees"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_2be80bce-1266-40ac-9372-de4accdb5794" xlink:to="loc_pcty_AmortizationPeriodForNonRefundableImplementationFees_881ef2ce-6106-493a-bd29-8b71ad490d47" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ChangeInContractWithCustomerLiabilityAbstract_1a356843-a576-4153-b8ce-3a9a22a0a117" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ChangeInContractWithCustomerLiabilityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_2be80bce-1266-40ac-9372-de4accdb5794" xlink:to="loc_us-gaap_ChangeInContractWithCustomerLiabilityAbstract_1a356843-a576-4153-b8ce-3a9a22a0a117" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiability_be26ceae-d2f3-4ef0-83db-08a6c8c341d0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ChangeInContractWithCustomerLiabilityAbstract_1a356843-a576-4153-b8ce-3a9a22a0a117" xlink:to="loc_us-gaap_ContractWithCustomerLiability_be26ceae-d2f3-4ef0-83db-08a6c8c341d0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_b4875795-40e8-4818-aa8b-ddc0c0fc0bb0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInContractWithCustomerLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ChangeInContractWithCustomerLiabilityAbstract_1a356843-a576-4153-b8ce-3a9a22a0a117" xlink:to="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_b4875795-40e8-4818-aa8b-ddc0c0fc0bb0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_TotalRevenueRecognizedFromBothTheBeginningBalanceAndCurrentPeriodIncreaseInContractLiability_f43fd68d-9ee8-445e-93b8-52badf2b3bc5" xlink:href="pcty-20240930.xsd#pcty_TotalRevenueRecognizedFromBothTheBeginningBalanceAndCurrentPeriodIncreaseInContractLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ChangeInContractWithCustomerLiabilityAbstract_1a356843-a576-4153-b8ce-3a9a22a0a117" xlink:to="loc_pcty_TotalRevenueRecognizedFromBothTheBeginningBalanceAndCurrentPeriodIncreaseInContractLiability_f43fd68d-9ee8-445e-93b8-52badf2b3bc5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiability_777e2b5f-b3ad-4f31-9b2a-8948892c1877" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerLiability"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_ContractWithCustomerRevenueDeferredToBeRecognizedRemainderOfFiscalYear_b4328a4b-0130-4ff6-9743-86493bb3966c" xlink:href="pcty-20240930.xsd#pcty_ContractWithCustomerRevenueDeferredToBeRecognizedRemainderOfFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_2be80bce-1266-40ac-9372-de4accdb5794" xlink:to="loc_pcty_ContractWithCustomerRevenueDeferredToBeRecognizedRemainderOfFiscalYear_b4328a4b-0130-4ff6-9743-86493bb3966c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_ContractWithCustomerRevenueDeferredToBeRecognizedInNextTwelveMonths_2e0e8a03-214a-4ead-b977-a49f8fb9a931" xlink:href="pcty-20240930.xsd#pcty_ContractWithCustomerRevenueDeferredToBeRecognizedInNextTwelveMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_2be80bce-1266-40ac-9372-de4accdb5794" xlink:to="loc_pcty_ContractWithCustomerRevenueDeferredToBeRecognizedInNextTwelveMonths_2e0e8a03-214a-4ead-b977-a49f8fb9a931" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_ContractWithCustomerRevenueDeferredToBeRecognizedInYearTwoAndThereafter_2bb46740-67dc-4799-b9e9-6a0a2c19ee79" xlink:href="pcty-20240930.xsd#pcty_ContractWithCustomerRevenueDeferredToBeRecognizedInYearTwoAndThereafter"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_2be80bce-1266-40ac-9372-de4accdb5794" xlink:to="loc_pcty_ContractWithCustomerRevenueDeferredToBeRecognizedInYearTwoAndThereafter_2bb46740-67dc-4799-b9e9-6a0a2c19ee79" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/RevenueDeferredContractCostsDetails" xlink:type="simple" xlink:href="pcty-20240930.xsd#RevenueDeferredContractCostsDetails"/>
  <link:definitionLink xlink:role="http://www.paylocity.com/role/RevenueDeferredContractCostsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_685feb81-9a77-4c30-8593-65c3395c23ba" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_48f422c9-59b8-49a7-a3e3-fad848a1fbf5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_685feb81-9a77-4c30-8593-65c3395c23ba" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_48f422c9-59b8-49a7-a3e3-fad848a1fbf5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedContractCostAxis_f117da1b-cac6-42b9-9116-84d13ec52abf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CapitalizedContractCostAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_48f422c9-59b8-49a7-a3e3-fad848a1fbf5" xlink:to="loc_us-gaap_CapitalizedContractCostAxis_f117da1b-cac6-42b9-9116-84d13ec52abf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedContractCostDomain_f117da1b-cac6-42b9-9116-84d13ec52abf_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CapitalizedContractCostDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CapitalizedContractCostAxis_f117da1b-cac6-42b9-9116-84d13ec52abf" xlink:to="loc_us-gaap_CapitalizedContractCostDomain_f117da1b-cac6-42b9-9116-84d13ec52abf_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedContractCostDomain_fb5bc692-a393-4b29-8ab0-e69c5dbdb4e4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CapitalizedContractCostDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CapitalizedContractCostAxis_f117da1b-cac6-42b9-9116-84d13ec52abf" xlink:to="loc_us-gaap_CapitalizedContractCostDomain_fb5bc692-a393-4b29-8ab0-e69c5dbdb4e4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_CostsToObtainANewContractMember_3e8e3058-0d25-4d0b-8655-8941220ec15f" xlink:href="pcty-20240930.xsd#pcty_CostsToObtainANewContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CapitalizedContractCostDomain_fb5bc692-a393-4b29-8ab0-e69c5dbdb4e4" xlink:to="loc_pcty_CostsToObtainANewContractMember_3e8e3058-0d25-4d0b-8655-8941220ec15f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_CostsToFulfillAContractMember_9a637883-c837-4d4f-9c28-10e2c83ea47d" xlink:href="pcty-20240930.xsd#pcty_CostsToFulfillAContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CapitalizedContractCostDomain_fb5bc692-a393-4b29-8ab0-e69c5dbdb4e4" xlink:to="loc_pcty_CostsToFulfillAContractMember_9a637883-c837-4d4f-9c28-10e2c83ea47d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedContractCostNetAbstract_da273850-b279-4546-86b4-71547fc655fd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CapitalizedContractCostNetAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_685feb81-9a77-4c30-8593-65c3395c23ba" xlink:to="loc_us-gaap_CapitalizedContractCostNetAbstract_da273850-b279-4546-86b4-71547fc655fd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedContractCostAmortizationPeriod_82269e23-5836-42aa-8914-2afaf0ee9c13" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CapitalizedContractCostAmortizationPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CapitalizedContractCostNetAbstract_da273850-b279-4546-86b4-71547fc655fd" xlink:to="loc_us-gaap_CapitalizedContractCostAmortizationPeriod_82269e23-5836-42aa-8914-2afaf0ee9c13" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedContractCostNet_88ff603f-5a5c-4212-af14-405cf8fb3ca5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CapitalizedContractCostNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CapitalizedContractCostNetAbstract_da273850-b279-4546-86b4-71547fc655fd" xlink:to="loc_us-gaap_CapitalizedContractCostNet_88ff603f-5a5c-4212-af14-405cf8fb3ca5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_CapitalizedContractCostAdditions_90eb835c-ce07-433e-8dc8-10c8b58e0f88" xlink:href="pcty-20240930.xsd#pcty_CapitalizedContractCostAdditions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CapitalizedContractCostNetAbstract_da273850-b279-4546-86b4-71547fc655fd" xlink:to="loc_pcty_CapitalizedContractCostAdditions_90eb835c-ce07-433e-8dc8-10c8b58e0f88" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedContractCostAmortization_c9e37f9e-e73d-44ee-9a17-65bac7bb72ac" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CapitalizedContractCostAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CapitalizedContractCostNetAbstract_da273850-b279-4546-86b4-71547fc655fd" xlink:to="loc_us-gaap_CapitalizedContractCostAmortization_c9e37f9e-e73d-44ee-9a17-65bac7bb72ac" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedContractCostNet_f1695de4-d9d7-49c2-87c5-40ff87ed313b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CapitalizedContractCostNet"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/RevenueRemainingPerformanceObligationsDetails" xlink:type="simple" xlink:href="pcty-20240930.xsd#RevenueRemainingPerformanceObligationsDetails"/>
  <link:definitionLink xlink:role="http://www.paylocity.com/role/RevenueRemainingPerformanceObligationsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_7f60a2b7-b948-49da-abaf-d74a8b268ba9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_afc2c7cf-963f-4e1e-96b1-5a9959f3f564" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_7f60a2b7-b948-49da-abaf-d74a8b268ba9" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_afc2c7cf-963f-4e1e-96b1-5a9959f3f564" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_23aec1df-efce-435f-94f4-cc50bfe9f8a1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_afc2c7cf-963f-4e1e-96b1-5a9959f3f564" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_23aec1df-efce-435f-94f4-cc50bfe9f8a1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuePracticalExpedientAbstract_26e32f9d-471a-4dac-bc01-ccdf2375db8e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenuePracticalExpedientAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_7f60a2b7-b948-49da-abaf-d74a8b268ba9" xlink:to="loc_us-gaap_RevenuePracticalExpedientAbstract_26e32f9d-471a-4dac-bc01-ccdf2375db8e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_88d1123f-e495-4ff9-9a24-8530efbac9d3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuePracticalExpedientAbstract_26e32f9d-471a-4dac-bc01-ccdf2375db8e" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_88d1123f-e495-4ff9-9a24-8530efbac9d3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_aaa78396-fa65-4346-a5b3-ac9ecaa3f22c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuePracticalExpedientAbstract_26e32f9d-471a-4dac-bc01-ccdf2375db8e" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_aaa78396-fa65-4346-a5b3-ac9ecaa3f22c" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/RevenueRemainingPerformanceObligationsDetails_1" xlink:type="simple" xlink:href="pcty-20240930.xsd#RevenueRemainingPerformanceObligationsDetails_1"/>
  <link:definitionLink xlink:role="http://www.paylocity.com/role/RevenueRemainingPerformanceObligationsDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueLineItems_7f60a2b7-b948-49da-abaf-d74a8b268ba9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_afc2c7cf-963f-4e1e-96b1-5a9959f3f564" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_7f60a2b7-b948-49da-abaf-d74a8b268ba9" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_afc2c7cf-963f-4e1e-96b1-5a9959f3f564" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuePracticalExpedientAbstract_26e32f9d-471a-4dac-bc01-ccdf2375db8e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenuePracticalExpedientAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_7f60a2b7-b948-49da-abaf-d74a8b268ba9" xlink:to="loc_us-gaap_RevenuePracticalExpedientAbstract_26e32f9d-471a-4dac-bc01-ccdf2375db8e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_88d1123f-e495-4ff9-9a24-8530efbac9d3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuePracticalExpedientAbstract_26e32f9d-471a-4dac-bc01-ccdf2375db8e" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_88d1123f-e495-4ff9-9a24-8530efbac9d3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_aaa78396-fa65-4346-a5b3-ac9ecaa3f22c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuePracticalExpedientAbstract_26e32f9d-471a-4dac-bc01-ccdf2375db8e" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_aaa78396-fa65-4346-a5b3-ac9ecaa3f22c" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/BusinessCombinationDetails" xlink:type="simple" xlink:href="pcty-20240930.xsd#BusinessCombinationDetails"/>
  <link:definitionLink xlink:role="http://www.paylocity.com/role/BusinessCombinationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_073ca8d2-bdc0-485f-b20b-3ef63ee7773f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_c6031206-fc15-4e29-9353-ef33fb24543a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_073ca8d2-bdc0-485f-b20b-3ef63ee7773f" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_c6031206-fc15-4e29-9353-ef33fb24543a" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_75538a01-4462-4147-99e8-3acf546f8050" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_c6031206-fc15-4e29-9353-ef33fb24543a" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_75538a01-4462-4147-99e8-3acf546f8050" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_75538a01-4462-4147-99e8-3acf546f8050_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_75538a01-4462-4147-99e8-3acf546f8050" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_75538a01-4462-4147-99e8-3acf546f8050_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e2df5997-21c0-4170-acc5-bbdf31e30f0e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_75538a01-4462-4147-99e8-3acf546f8050" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e2df5997-21c0-4170-acc5-bbdf31e30f0e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_TraceHQcomIncMember_658c0fbd-90db-4ff3-a1f1-562854f2b3b7" xlink:href="pcty-20240930.xsd#pcty_TraceHQcomIncMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_e2df5997-21c0-4170-acc5-bbdf31e30f0e" xlink:to="loc_pcty_TraceHQcomIncMember_658c0fbd-90db-4ff3-a1f1-562854f2b3b7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_a8a5a79e-d5a9-45cb-a33c-d3e828834ffd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_c6031206-fc15-4e29-9353-ef33fb24543a" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_a8a5a79e-d5a9-45cb-a33c-d3e828834ffd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_a8a5a79e-d5a9-45cb-a33c-d3e828834ffd_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_a8a5a79e-d5a9-45cb-a33c-d3e828834ffd" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_a8a5a79e-d5a9-45cb-a33c-d3e828834ffd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_130fdb3e-159f-4aed-9363-5118870b6188" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_a8a5a79e-d5a9-45cb-a33c-d3e828834ffd" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_130fdb3e-159f-4aed-9363-5118870b6188" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_ProprietaryTechnologyMember_12ec6082-d049-4a2f-8e10-8360561f19c7" xlink:href="pcty-20240930.xsd#pcty_ProprietaryTechnologyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_130fdb3e-159f-4aed-9363-5118870b6188" xlink:to="loc_pcty_ProprietaryTechnologyMember_12ec6082-d049-4a2f-8e10-8360561f19c7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_341c20ac-300d-416b-aa7c-3784fc985b68" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_073ca8d2-bdc0-485f-b20b-3ef63ee7773f" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_341c20ac-300d-416b-aa7c-3784fc985b68" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_2dfd2993-fede-4752-a417-563615b0d1c7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_073ca8d2-bdc0-485f-b20b-3ef63ee7773f" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_2dfd2993-fede-4752-a417-563615b0d1c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_8aa0367e-1ea2-420c-b66e-82677f81c0eb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_073ca8d2-bdc0-485f-b20b-3ef63ee7773f" xlink:to="loc_us-gaap_Goodwill_8aa0367e-1ea2-420c-b66e-82677f81c0eb" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/BalanceSheetInformationAllowanceforCreditLossesforAccountsReceivableCapitalizedInternalUseSoftwareandPropertyPlantandEquipmentDetails" xlink:type="simple" xlink:href="pcty-20240930.xsd#BalanceSheetInformationAllowanceforCreditLossesforAccountsReceivableCapitalizedInternalUseSoftwareandPropertyPlantandEquipmentDetails"/>
  <link:definitionLink xlink:role="http://www.paylocity.com/role/BalanceSheetInformationAllowanceforCreditLossesforAccountsReceivableCapitalizedInternalUseSoftwareandPropertyPlantandEquipmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_d4d275fb-ffaa-4bb4-bb25-5f27e59d9b03" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_842faa85-fd6b-444d-ac7c-2b8f17ab736c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_d4d275fb-ffaa-4bb4-bb25-5f27e59d9b03" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_842faa85-fd6b-444d-ac7c-2b8f17ab736c" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_20ce3d9f-a49f-472e-b7a4-f683ebb38cfe" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_842faa85-fd6b-444d-ac7c-2b8f17ab736c" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_20ce3d9f-a49f-472e-b7a4-f683ebb38cfe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_20ce3d9f-a49f-472e-b7a4-f683ebb38cfe_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_20ce3d9f-a49f-472e-b7a4-f683ebb38cfe" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_20ce3d9f-a49f-472e-b7a4-f683ebb38cfe_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_9678b579-e13d-4c7f-9060-46cd6346c68d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_20ce3d9f-a49f-472e-b7a4-f683ebb38cfe" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_9678b579-e13d-4c7f-9060-46cd6346c68d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OfficeEquipmentMember_e2db1a8e-96d2-4a14-862c-12d3dbc8210e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OfficeEquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_9678b579-e13d-4c7f-9060-46cd6346c68d" xlink:to="loc_us-gaap_OfficeEquipmentMember_e2db1a8e-96d2-4a14-862c-12d3dbc8210e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComputerEquipmentMember_0dede161-9d50-4df8-b269-a3d9739566a3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ComputerEquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_9678b579-e13d-4c7f-9060-46cd6346c68d" xlink:to="loc_us-gaap_ComputerEquipmentMember_0dede161-9d50-4df8-b269-a3d9739566a3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FurnitureAndFixturesMember_97a3f5ce-7b22-409b-9dee-ea88a8abaff0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FurnitureAndFixturesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_9678b579-e13d-4c7f-9060-46cd6346c68d" xlink:to="loc_us-gaap_FurnitureAndFixturesMember_97a3f5ce-7b22-409b-9dee-ea88a8abaff0" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComputerSoftwareIntangibleAssetMember_c3d0bc1f-ba98-4778-b291-bf15c6236017" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ComputerSoftwareIntangibleAssetMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_9678b579-e13d-4c7f-9060-46cd6346c68d" xlink:to="loc_us-gaap_ComputerSoftwareIntangibleAssetMember_c3d0bc1f-ba98-4778-b291-bf15c6236017" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseholdImprovementsMember_47ab956c-cafb-4c40-85ce-f56f06268140" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LeaseholdImprovementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_9678b579-e13d-4c7f-9060-46cd6346c68d" xlink:to="loc_us-gaap_LeaseholdImprovementsMember_47ab956c-cafb-4c40-85ce-f56f06268140" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_TimeClocksRentedByClientsMember_12998314-efa2-4f66-a4f3-e8f68d0bf9c1" xlink:href="pcty-20240930.xsd#pcty_TimeClocksRentedByClientsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_9678b579-e13d-4c7f-9060-46cd6346c68d" xlink:to="loc_pcty_TimeClocksRentedByClientsMember_12998314-efa2-4f66-a4f3-e8f68d0bf9c1" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_5b47fefb-ea78-47a1-8d5b-f9e42e0a662c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeStatementLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_842faa85-fd6b-444d-ac7c-2b8f17ab736c" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_5b47fefb-ea78-47a1-8d5b-f9e42e0a662c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_5b47fefb-ea78-47a1-8d5b-f9e42e0a662c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_5b47fefb-ea78-47a1-8d5b-f9e42e0a662c" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_5b47fefb-ea78-47a1-8d5b-f9e42e0a662c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_dcdc4256-13e7-4dd5-b1f6-0ead3f511eca" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_5b47fefb-ea78-47a1-8d5b-f9e42e0a662c" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_dcdc4256-13e7-4dd5-b1f6-0ead3f511eca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfSalesMember_0f0989d6-b62b-4e57-8a1b-27e9027df8a9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CostOfSalesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_dcdc4256-13e7-4dd5-b1f6-0ead3f511eca" xlink:to="loc_us-gaap_CostOfSalesMember_0f0989d6-b62b-4e57-8a1b-27e9027df8a9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableRollforward_f1cc0808-2ccf-4a9a-b3d7-4d25e369d9fb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableRollforward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_d4d275fb-ffaa-4bb4-bb25-5f27e59d9b03" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableRollforward_f1cc0808-2ccf-4a9a-b3d7-4d25e369d9fb" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivable_c5300212-99e3-4232-a32a-7a92c944755c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableRollforward_f1cc0808-2ccf-4a9a-b3d7-4d25e369d9fb" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivable_c5300212-99e3-4232-a32a-7a92c944755c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_9cf76348-2c64-4509-a104-e49d9f9d1c67" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProvisionForDoubtfulAccounts"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableRollforward_f1cc0808-2ccf-4a9a-b3d7-4d25e369d9fb" xlink:to="loc_us-gaap_ProvisionForDoubtfulAccounts_9cf76348-2c64-4509-a104-e49d9f9d1c67" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs_b872df43-0db8-4468-8ad2-b423fa5dbc04" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableRollforward_f1cc0808-2ccf-4a9a-b3d7-4d25e369d9fb" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs_b872df43-0db8-4468-8ad2-b423fa5dbc04" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivable_a3f2934b-ee9a-4375-9967-0b3a46d45e09" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivable"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedComputerSoftwareNetAbstract_059ac94b-d5ed-4c6c-81e1-ada4b86aa0df" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CapitalizedComputerSoftwareNetAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_d4d275fb-ffaa-4bb4-bb25-5f27e59d9b03" xlink:to="loc_us-gaap_CapitalizedComputerSoftwareNetAbstract_059ac94b-d5ed-4c6c-81e1-ada4b86aa0df" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedComputerSoftwareGross_237e9841-225e-4c14-80ec-a691aff4c8f5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CapitalizedComputerSoftwareGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CapitalizedComputerSoftwareNetAbstract_059ac94b-d5ed-4c6c-81e1-ada4b86aa0df" xlink:to="loc_us-gaap_CapitalizedComputerSoftwareGross_237e9841-225e-4c14-80ec-a691aff4c8f5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedComputerSoftwareAccumulatedAmortization_bc001830-a81e-4a21-a682-78594a300944" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CapitalizedComputerSoftwareAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CapitalizedComputerSoftwareNetAbstract_059ac94b-d5ed-4c6c-81e1-ada4b86aa0df" xlink:to="loc_us-gaap_CapitalizedComputerSoftwareAccumulatedAmortization_bc001830-a81e-4a21-a682-78594a300944" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedComputerSoftwareNet_a8b4e64b-d7d9-4bdf-87d5-b871e09b4254" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CapitalizedComputerSoftwareNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CapitalizedComputerSoftwareNetAbstract_059ac94b-d5ed-4c6c-81e1-ada4b86aa0df" xlink:to="loc_us-gaap_CapitalizedComputerSoftwareNet_a8b4e64b-d7d9-4bdf-87d5-b871e09b4254" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedComputerSoftwareAmortization1_76863c73-1106-4ef3-864d-bbedc569ac13" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CapitalizedComputerSoftwareAmortization1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CapitalizedComputerSoftwareNetAbstract_059ac94b-d5ed-4c6c-81e1-ada4b86aa0df" xlink:to="loc_us-gaap_CapitalizedComputerSoftwareAmortization1_76863c73-1106-4ef3-864d-bbedc569ac13" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract_df3f2151-087e-4bbf-9054-5cbaa41126b4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_d4d275fb-ffaa-4bb4-bb25-5f27e59d9b03" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract_df3f2151-087e-4bbf-9054-5cbaa41126b4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_0a651451-bba8-4363-9a4e-9685f2fe460e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract_df3f2151-087e-4bbf-9054-5cbaa41126b4" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_0a651451-bba8-4363-9a4e-9685f2fe460e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_6f5b62ba-ad9d-4e30-9307-87137c7b6bd3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract_df3f2151-087e-4bbf-9054-5cbaa41126b4" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_6f5b62ba-ad9d-4e30-9307-87137c7b6bd3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_c2410bd2-eb6a-4e3e-b9e1-8e7cd11a8634" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentNetByTypeAbstract_df3f2151-087e-4bbf-9054-5cbaa41126b4" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_c2410bd2-eb6a-4e3e-b9e1-8e7cd11a8634" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_56a4f585-70bc-456a-95dd-dd4f21c483df" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Depreciation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_d4d275fb-ffaa-4bb4-bb25-5f27e59d9b03" xlink:to="loc_us-gaap_Depreciation_56a4f585-70bc-456a-95dd-dd4f21c483df" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/BalanceSheetInformationGoodwillIntangibleAssetsandAccruedExpensesDetails" xlink:type="simple" xlink:href="pcty-20240930.xsd#BalanceSheetInformationGoodwillIntangibleAssetsandAccruedExpensesDetails"/>
  <link:definitionLink xlink:role="http://www.paylocity.com/role/BalanceSheetInformationGoodwillIntangibleAssetsandAccruedExpensesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_b5536a36-4678-4202-8d83-7a2dd4d58ed8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_d5425be5-264f-4ee5-a175-794f679c79d3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_b5536a36-4678-4202-8d83-7a2dd4d58ed8" xlink:to="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_d5425be5-264f-4ee5-a175-794f679c79d3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_aa0c86f5-16ae-4c42-8dac-b962c8670ebf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_d5425be5-264f-4ee5-a175-794f679c79d3" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_aa0c86f5-16ae-4c42-8dac-b962c8670ebf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_aa0c86f5-16ae-4c42-8dac-b962c8670ebf_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_aa0c86f5-16ae-4c42-8dac-b962c8670ebf" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_aa0c86f5-16ae-4c42-8dac-b962c8670ebf_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_3bfab8b3-704f-46b3-9317-8a18ff4799d3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_aa0c86f5-16ae-4c42-8dac-b962c8670ebf" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_3bfab8b3-704f-46b3-9317-8a18ff4799d3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_ProprietaryTechnologyMember_bf0bd73d-b32f-4987-8903-75f692d99c07" xlink:href="pcty-20240930.xsd#pcty_ProprietaryTechnologyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_3bfab8b3-704f-46b3-9317-8a18ff4799d3" xlink:to="loc_pcty_ProprietaryTechnologyMember_bf0bd73d-b32f-4987-8903-75f692d99c07" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_b8bf2b64-0aad-402b-81dc-a2e5ac69e20d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CustomerRelationshipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_3bfab8b3-704f-46b3-9317-8a18ff4799d3" xlink:to="loc_us-gaap_CustomerRelationshipsMember_b8bf2b64-0aad-402b-81dc-a2e5ac69e20d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncompeteAgreementsMember_97fb117f-8ff0-49bd-8595-ced6f3a67d44" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NoncompeteAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_3bfab8b3-704f-46b3-9317-8a18ff4799d3" xlink:to="loc_us-gaap_NoncompeteAgreementsMember_97fb117f-8ff0-49bd-8595-ced6f3a67d44" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeNamesMember_a38de32b-9916-4f7c-b650-b8cf31d600e2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TradeNamesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_3bfab8b3-704f-46b3-9317-8a18ff4799d3" xlink:to="loc_us-gaap_TradeNamesMember_a38de32b-9916-4f7c-b650-b8cf31d600e2" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillRollForward_a186880f-1801-4b08-be4c-1bc86adf04c1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GoodwillRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_b5536a36-4678-4202-8d83-7a2dd4d58ed8" xlink:to="loc_us-gaap_GoodwillRollForward_a186880f-1801-4b08-be4c-1bc86adf04c1" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_1f1c243f-9550-4ac9-8ca7-c230922516df" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_a186880f-1801-4b08-be4c-1bc86adf04c1" xlink:to="loc_us-gaap_Goodwill_1f1c243f-9550-4ac9-8ca7-c230922516df" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_c94a73f9-7646-4a4a-ba48-5c1d807a6d0b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GoodwillPurchaseAccountingAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_a186880f-1801-4b08-be4c-1bc86adf04c1" xlink:to="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_c94a73f9-7646-4a4a-ba48-5c1d807a6d0b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_982a90ad-b6d1-4152-9fd6-754c456402c6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Goodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_1e72a0bb-68af-4163-a357-37db88526772" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsNetAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_b5536a36-4678-4202-8d83-7a2dd4d58ed8" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_1e72a0bb-68af-4163-a357-37db88526772" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_1d1ce054-0159-45fb-a56e-49458526c1e7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_1e72a0bb-68af-4163-a357-37db88526772" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_1d1ce054-0159-45fb-a56e-49458526c1e7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_42f9a90e-1418-41c6-ad5c-d8f375bdab15" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_1e72a0bb-68af-4163-a357-37db88526772" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_42f9a90e-1418-41c6-ad5c-d8f375bdab15" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_b04c1e8c-1e64-455b-9c1f-69c8aba729fb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_1e72a0bb-68af-4163-a357-37db88526772" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_b04c1e8c-1e64-455b-9c1f-69c8aba729fb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_86ed6984-1d27-4bc8-a448-da12f5a1e8f5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_1e72a0bb-68af-4163-a357-37db88526772" xlink:to="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_86ed6984-1d27-4bc8-a448-da12f5a1e8f5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_7a2e25a9-a158-4c1d-9468-3d0c7ca99ef9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_1e72a0bb-68af-4163-a357-37db88526772" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_7a2e25a9-a158-4c1d-9468-3d0c7ca99ef9" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_347988be-6bce-4604-8745-0e812df63537" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_b5536a36-4678-4202-8d83-7a2dd4d58ed8" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_347988be-6bce-4604-8745-0e812df63537" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_6236e982-c58b-4db0-b6e7-322efe5b2020" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_347988be-6bce-4604-8745-0e812df63537" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_6236e982-c58b-4db0-b6e7-322efe5b2020" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_c2bedd01-7c56-4081-97ee-474462b61a06" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_347988be-6bce-4604-8745-0e812df63537" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_c2bedd01-7c56-4081-97ee-474462b61a06" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_b387645a-2355-46aa-9dbb-2c7ea9f1109a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_347988be-6bce-4604-8745-0e812df63537" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_b387645a-2355-46aa-9dbb-2c7ea9f1109a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_0cb6d07f-e35a-4277-af00-0c3239945534" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_347988be-6bce-4604-8745-0e812df63537" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_0cb6d07f-e35a-4277-af00-0c3239945534" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_3363e9d0-b951-462e-bfea-40bfdd4ae5bd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_347988be-6bce-4604-8745-0e812df63537" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_3363e9d0-b951-462e-bfea-40bfdd4ae5bd" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_664ceffe-fe22-4ab6-ac51-25aa263cc6a5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrentAbstract_0d965b99-e4cc-4b2b-838b-45b80ce3e4a0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccruedLiabilitiesCurrentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_b5536a36-4678-4202-8d83-7a2dd4d58ed8" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrentAbstract_0d965b99-e4cc-4b2b-838b-45b80ce3e4a0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_0a0bd1bd-1702-49cc-87a2-e4a4f747da91" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrentAbstract_0d965b99-e4cc-4b2b-838b-45b80ce3e4a0" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_0a0bd1bd-1702-49cc-87a2-e4a4f747da91" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_582c5405-7ca6-4d66-a2fc-1ee55935ffeb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrentAbstract_0d965b99-e4cc-4b2b-838b-45b80ce3e4a0" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_582c5405-7ca6-4d66-a2fc-1ee55935ffeb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_af55bf19-478b-494e-b748-b99beea80c01" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrentAbstract_0d965b99-e4cc-4b2b-838b-45b80ce3e4a0" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_af55bf19-478b-494e-b748-b99beea80c01" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrent_5f4a524f-9ddb-48ae-bd25-095735a2563b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherAccruedLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrentAbstract_0d965b99-e4cc-4b2b-838b-45b80ce3e4a0" xlink:to="loc_us-gaap_OtherAccruedLiabilitiesCurrent_5f4a524f-9ddb-48ae-bd25-095735a2563b" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_06ddc7fb-7d40-4c59-9825-802e50f3cb4c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrentAbstract_0d965b99-e4cc-4b2b-838b-45b80ce3e4a0" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_06ddc7fb-7d40-4c59-9825-802e50f3cb4c" xlink:type="arc" order="5"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/CashandCashEquivalentsandFundsHeldForClientsReconciliationDetails" xlink:type="simple" xlink:href="pcty-20240930.xsd#CashandCashEquivalentsandFundsHeldForClientsReconciliationDetails"/>
  <link:definitionLink xlink:role="http://www.paylocity.com/role/CashandCashEquivalentsandFundsHeldForClientsReconciliationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_2e19dedb-f3de-4711-afd1-1e8412d6aece" xlink:href="pcty-20240930.xsd#pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_ScheduleOfFundsHeldForClientsAndCorporateInvestmentsTable_1a08d2f2-7bde-4a0a-b000-1b8a66b1b1ca" xlink:href="pcty-20240930.xsd#pcty_ScheduleOfFundsHeldForClientsAndCorporateInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_2e19dedb-f3de-4711-afd1-1e8412d6aece" xlink:to="loc_pcty_ScheduleOfFundsHeldForClientsAndCorporateInvestmentsTable_1a08d2f2-7bde-4a0a-b000-1b8a66b1b1ca" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_be853dba-e32d-49ea-be4e-c673acb63c28" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_pcty_ScheduleOfFundsHeldForClientsAndCorporateInvestmentsTable_1a08d2f2-7bde-4a0a-b000-1b8a66b1b1ca" xlink:to="loc_us-gaap_FinancialInstrumentAxis_be853dba-e32d-49ea-be4e-c673acb63c28" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_be853dba-e32d-49ea-be4e-c673acb63c28_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_be853dba-e32d-49ea-be4e-c673acb63c28" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_be853dba-e32d-49ea-be4e-c673acb63c28_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_29925567-4feb-459f-b9a2-116480148337" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_be853dba-e32d-49ea-be4e-c673acb63c28" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_29925567-4feb-459f-b9a2-116480148337" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_f2bb9057-f9d5-4114-a2aa-357001e14e8d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_29925567-4feb-459f-b9a2-116480148337" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_f2bb9057-f9d5-4114-a2aa-357001e14e8d" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_bcadee94-2233-440a-8f97-55976642b65f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_29925567-4feb-459f-b9a2-116480148337" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_bcadee94-2233-440a-8f97-55976642b65f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasurySecuritiesMember_bd75eda3-b881-4dc6-866c-94e116c8f9a2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_USTreasurySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_29925567-4feb-459f-b9a2-116480148337" xlink:to="loc_us-gaap_USTreasurySecuritiesMember_bd75eda3-b881-4dc6-866c-94e116c8f9a2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherDebtSecuritiesMember_8d15fc73-fbbb-47e8-a553-73bb8cf59ae5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_29925567-4feb-459f-b9a2-116480148337" xlink:to="loc_us-gaap_OtherDebtSecuritiesMember_8d15fc73-fbbb-47e8-a553-73bb8cf59ae5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_CashAndCashEquivalentsAmortizedCost_af6886a7-a47b-4646-90f3-2fe333af41c5" xlink:href="pcty-20240930.xsd#pcty_CashAndCashEquivalentsAmortizedCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_2e19dedb-f3de-4711-afd1-1e8412d6aece" xlink:to="loc_pcty_CashAndCashEquivalentsAmortizedCost_af6886a7-a47b-4646-90f3-2fe333af41c5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_CashAndCashEquivalentsAccumulatedGrossUnrealizedGainBeforeTax_7e526dd4-8a5d-4203-85a4-e21c1c587f33" xlink:href="pcty-20240930.xsd#pcty_CashAndCashEquivalentsAccumulatedGrossUnrealizedGainBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_2e19dedb-f3de-4711-afd1-1e8412d6aece" xlink:to="loc_pcty_CashAndCashEquivalentsAccumulatedGrossUnrealizedGainBeforeTax_7e526dd4-8a5d-4203-85a4-e21c1c587f33" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_CashAndCashEquivalentsAccumulatedGrossUnrealizedLossBeforeTax_33ccedf4-fba8-4172-a39b-ce7238197846" xlink:href="pcty-20240930.xsd#pcty_CashAndCashEquivalentsAccumulatedGrossUnrealizedLossBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_2e19dedb-f3de-4711-afd1-1e8412d6aece" xlink:to="loc_pcty_CashAndCashEquivalentsAccumulatedGrossUnrealizedLossBeforeTax_33ccedf4-fba8-4172-a39b-ce7238197846" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_12924f31-3a10-4eb8-af3a-87188885f327" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_2e19dedb-f3de-4711-afd1-1e8412d6aece" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_12924f31-3a10-4eb8-af3a-87188885f327" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_FundsHeldForClientsCashAndCashEquivalentsAmortizedCost_978f4d94-508e-4d5e-a2c1-1beb55b681ee" xlink:href="pcty-20240930.xsd#pcty_FundsHeldForClientsCashAndCashEquivalentsAmortizedCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_2e19dedb-f3de-4711-afd1-1e8412d6aece" xlink:to="loc_pcty_FundsHeldForClientsCashAndCashEquivalentsAmortizedCost_978f4d94-508e-4d5e-a2c1-1beb55b681ee" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_FundsHeldForClientsCashAndCashEquivalentsAccumulatedGrossUnrealizedGainBeforeTax_16d8f876-0462-4df1-bded-8f488223e25a" xlink:href="pcty-20240930.xsd#pcty_FundsHeldForClientsCashAndCashEquivalentsAccumulatedGrossUnrealizedGainBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_2e19dedb-f3de-4711-afd1-1e8412d6aece" xlink:to="loc_pcty_FundsHeldForClientsCashAndCashEquivalentsAccumulatedGrossUnrealizedGainBeforeTax_16d8f876-0462-4df1-bded-8f488223e25a" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_FundsHeldForClientsCashAndCashEquivalentsAccumulatedGrossUnrealizedLossBeforeTax_3c0adf9d-165f-4bd6-a071-ce10f048cd1c" xlink:href="pcty-20240930.xsd#pcty_FundsHeldForClientsCashAndCashEquivalentsAccumulatedGrossUnrealizedLossBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_2e19dedb-f3de-4711-afd1-1e8412d6aece" xlink:to="loc_pcty_FundsHeldForClientsCashAndCashEquivalentsAccumulatedGrossUnrealizedLossBeforeTax_3c0adf9d-165f-4bd6-a071-ce10f048cd1c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_FundsHeldForClientsCashAndCashEquivalentsAtCarryingValue_edffc880-e2d8-4459-8bfd-19fe9138103c" xlink:href="pcty-20240930.xsd#pcty_FundsHeldForClientsCashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_2e19dedb-f3de-4711-afd1-1e8412d6aece" xlink:to="loc_pcty_FundsHeldForClientsCashAndCashEquivalentsAtCarryingValue_edffc880-e2d8-4459-8bfd-19fe9138103c" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_568991e1-84b8-4d2e-a9aa-107b28b2afcd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_2e19dedb-f3de-4711-afd1-1e8412d6aece" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_568991e1-84b8-4d2e-a9aa-107b28b2afcd" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_0913e03f-f98d-4a17-9944-ba58bbcd2bde" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_568991e1-84b8-4d2e-a9aa-107b28b2afcd" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_0913e03f-f98d-4a17-9944-ba58bbcd2bde" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_59ac1f16-09bb-4206-8dab-41d067b3c05e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_568991e1-84b8-4d2e-a9aa-107b28b2afcd" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_59ac1f16-09bb-4206-8dab-41d067b3c05e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_d621141b-bedd-4084-9ce9-62e602da0f0b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_568991e1-84b8-4d2e-a9aa-107b28b2afcd" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_d621141b-bedd-4084-9ce9-62e602da0f0b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_e60e7516-b46f-4425-9ad8-d075bc6d2d07" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_568991e1-84b8-4d2e-a9aa-107b28b2afcd" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_e60e7516-b46f-4425-9ad8-d075bc6d2d07" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_InvestmentsAmortizedCost_a0e282be-5d2b-4747-b95f-f747d78b8a56" xlink:href="pcty-20240930.xsd#pcty_InvestmentsAmortizedCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_568991e1-84b8-4d2e-a9aa-107b28b2afcd" xlink:to="loc_pcty_InvestmentsAmortizedCost_a0e282be-5d2b-4747-b95f-f747d78b8a56" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_InvestmentsAccumulatedGrossUnrealizedGainBeforeTax_5cb806b5-325d-46aa-ab1e-18c5e2196379" xlink:href="pcty-20240930.xsd#pcty_InvestmentsAccumulatedGrossUnrealizedGainBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_568991e1-84b8-4d2e-a9aa-107b28b2afcd" xlink:to="loc_pcty_InvestmentsAccumulatedGrossUnrealizedGainBeforeTax_5cb806b5-325d-46aa-ab1e-18c5e2196379" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_InvestmentsAccumulatedGrossUnrealizedLossBeforeTax_3567206a-121f-4e04-97f4-c2d44542f0a9" xlink:href="pcty-20240930.xsd#pcty_InvestmentsAccumulatedGrossUnrealizedLossBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_568991e1-84b8-4d2e-a9aa-107b28b2afcd" xlink:to="loc_pcty_InvestmentsAccumulatedGrossUnrealizedLossBeforeTax_3567206a-121f-4e04-97f4-c2d44542f0a9" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Investments_f3a74d8b-28dd-4b6b-a91f-d48d83554c3b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Investments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_568991e1-84b8-4d2e-a9aa-107b28b2afcd" xlink:to="loc_us-gaap_Investments_f3a74d8b-28dd-4b6b-a91f-d48d83554c3b" xlink:type="arc" order="8"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/CashandCashEquivalentsandFundsHeldForClientsClassificationDetails" xlink:type="simple" xlink:href="pcty-20240930.xsd#CashandCashEquivalentsandFundsHeldForClientsClassificationDetails"/>
  <link:definitionLink xlink:role="http://www.paylocity.com/role/CashandCashEquivalentsandFundsHeldForClientsClassificationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_80e8190a-58ba-444a-b814-d97032c85673" xlink:href="pcty-20240930.xsd#pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_ScheduleOfFundsHeldForClientsAndCorporateInvestmentsTable_4d147268-b578-4c78-b785-062e8333d8ce" xlink:href="pcty-20240930.xsd#pcty_ScheduleOfFundsHeldForClientsAndCorporateInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_80e8190a-58ba-444a-b814-d97032c85673" xlink:to="loc_pcty_ScheduleOfFundsHeldForClientsAndCorporateInvestmentsTable_4d147268-b578-4c78-b785-062e8333d8ce" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_4181e304-cbca-42a5-a18e-3d7284f12a60" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_pcty_ScheduleOfFundsHeldForClientsAndCorporateInvestmentsTable_4d147268-b578-4c78-b785-062e8333d8ce" xlink:to="loc_us-gaap_FinancialInstrumentAxis_4181e304-cbca-42a5-a18e-3d7284f12a60" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_4181e304-cbca-42a5-a18e-3d7284f12a60_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_4181e304-cbca-42a5-a18e-3d7284f12a60" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_4181e304-cbca-42a5-a18e-3d7284f12a60_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_d01b57ed-10eb-45e4-a29e-0f64c44ebcc0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_4181e304-cbca-42a5-a18e-3d7284f12a60" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_d01b57ed-10eb-45e4-a29e-0f64c44ebcc0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_4fc3e18b-b5ad-4f0e-9a3e-8596c0bca3df" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_d01b57ed-10eb-45e4-a29e-0f64c44ebcc0" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_4fc3e18b-b5ad-4f0e-9a3e-8596c0bca3df" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_2af304a5-0430-4528-8c3e-7d2a8bd549d4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_d01b57ed-10eb-45e4-a29e-0f64c44ebcc0" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_2af304a5-0430-4528-8c3e-7d2a8bd549d4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasurySecuritiesMember_f5b010c0-8453-4a2c-9675-d6aa8b56992b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_USTreasurySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_d01b57ed-10eb-45e4-a29e-0f64c44ebcc0" xlink:to="loc_us-gaap_USTreasurySecuritiesMember_f5b010c0-8453-4a2c-9675-d6aa8b56992b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherDebtSecuritiesMember_79bc14ae-d8ea-45ea-b977-6aa0dc0180bf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_d01b57ed-10eb-45e4-a29e-0f64c44ebcc0" xlink:to="loc_us-gaap_OtherDebtSecuritiesMember_79bc14ae-d8ea-45ea-b977-6aa0dc0180bf" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_6bc3e64c-6f05-45c3-b6ce-6bcc4ec5dfca" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_80e8190a-58ba-444a-b814-d97032c85673" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_6bc3e64c-6f05-45c3-b6ce-6bcc4ec5dfca" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FundsHeldForClients_e5019fc0-9d79-4ca7-ab3e-3892058e399a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FundsHeldForClients"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_80e8190a-58ba-444a-b814-d97032c85673" xlink:to="loc_us-gaap_FundsHeldForClients_e5019fc0-9d79-4ca7-ab3e-3892058e399a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Investments_2f819b47-d1d1-47a2-a59a-f325c6b26e04" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Investments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_80e8190a-58ba-444a-b814-d97032c85673" xlink:to="loc_us-gaap_Investments_2f819b47-d1d1-47a2-a59a-f325c6b26e04" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_b2bdab22-773c-4ec1-8b75-7ffaafc6ec5e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_80e8190a-58ba-444a-b814-d97032c85673" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_b2bdab22-773c-4ec1-8b75-7ffaafc6ec5e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_e2827375-c97d-496c-a20c-c70753cc35e4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_80e8190a-58ba-444a-b814-d97032c85673" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_e2827375-c97d-496c-a20c-c70753cc35e4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_24900c5c-a876-4eaa-8a0a-b813d83f98b7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_80e8190a-58ba-444a-b814-d97032c85673" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_24900c5c-a876-4eaa-8a0a-b813d83f98b7" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_c035003a-1acb-4d88-8bb3-f997c82df32f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_80e8190a-58ba-444a-b814-d97032c85673" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_c035003a-1acb-4d88-8bb3-f997c82df32f" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_8affc815-c8d7-484d-9807-3e48413585af" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_80e8190a-58ba-444a-b814-d97032c85673" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_8affc815-c8d7-484d-9807-3e48413585af" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_3f50cc81-cf15-4459-98b4-1de0de12841b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_80e8190a-58ba-444a-b814-d97032c85673" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_3f50cc81-cf15-4459-98b4-1de0de12841b" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_CreditImpairmentLoss_fd2aa66f-d010-4573-b1c2-677964eb176d" xlink:href="pcty-20240930.xsd#pcty_CreditImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_80e8190a-58ba-444a-b814-d97032c85673" xlink:to="loc_pcty_CreditImpairmentLoss_fd2aa66f-d010-4573-b1c2-677964eb176d" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleRealizedGainLoss_c2d6a0b1-1a14-477c-8032-93128ad3cc12" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtSecuritiesAvailableForSaleRealizedGainLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_80e8190a-58ba-444a-b814-d97032c85673" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleRealizedGainLoss_c2d6a0b1-1a14-477c-8032-93128ad3cc12" xlink:type="arc" order="10"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/FairValueMeasurementDetails" xlink:type="simple" xlink:href="pcty-20240930.xsd#FairValueMeasurementDetails"/>
  <link:definitionLink xlink:role="http://www.paylocity.com/role/FairValueMeasurementDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_6d23f7bc-9ea0-475b-bd96-188ab25a6b2e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_a969c2bc-ddbb-4e10-a1bc-de5af87fc419" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_6d23f7bc-9ea0-475b-bd96-188ab25a6b2e" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_a969c2bc-ddbb-4e10-a1bc-de5af87fc419" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_913d809e-475d-448d-8bb1-f6f389f03b4c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_a969c2bc-ddbb-4e10-a1bc-de5af87fc419" xlink:to="loc_us-gaap_FinancialInstrumentAxis_913d809e-475d-448d-8bb1-f6f389f03b4c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_913d809e-475d-448d-8bb1-f6f389f03b4c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_913d809e-475d-448d-8bb1-f6f389f03b4c" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_913d809e-475d-448d-8bb1-f6f389f03b4c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_62852ee5-5585-410d-a3bf-957aa17a57ce" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_913d809e-475d-448d-8bb1-f6f389f03b4c" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_62852ee5-5585-410d-a3bf-957aa17a57ce" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_f668b4f3-f5c7-4440-a306-91ad6635be9f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_62852ee5-5585-410d-a3bf-957aa17a57ce" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_f668b4f3-f5c7-4440-a306-91ad6635be9f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_91f19850-fe54-4c09-940d-f7b222c45e72" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AssetBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_62852ee5-5585-410d-a3bf-957aa17a57ce" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_91f19850-fe54-4c09-940d-f7b222c45e72" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasurySecuritiesMember_8aaadfc5-d976-4100-84a5-c6bc883ba2e8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_USTreasurySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_62852ee5-5585-410d-a3bf-957aa17a57ce" xlink:to="loc_us-gaap_USTreasurySecuritiesMember_8aaadfc5-d976-4100-84a5-c6bc883ba2e8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherDebtSecuritiesMember_ed680be0-62b7-4507-b483-5238a43ae586" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_62852ee5-5585-410d-a3bf-957aa17a57ce" xlink:to="loc_us-gaap_OtherDebtSecuritiesMember_ed680be0-62b7-4507-b483-5238a43ae586" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_c3e77452-eedd-4ac2-857d-5593a8609dc9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_a969c2bc-ddbb-4e10-a1bc-de5af87fc419" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_c3e77452-eedd-4ac2-857d-5593a8609dc9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_c3e77452-eedd-4ac2-857d-5593a8609dc9_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_c3e77452-eedd-4ac2-857d-5593a8609dc9" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_c3e77452-eedd-4ac2-857d-5593a8609dc9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_67965c78-ff0f-4438-81bf-1574b730c61d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_c3e77452-eedd-4ac2-857d-5593a8609dc9" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_67965c78-ff0f-4438-81bf-1574b730c61d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_7432d3d9-0a0a-40ff-86d6-25c3140ec874" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_67965c78-ff0f-4438-81bf-1574b730c61d" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_7432d3d9-0a0a-40ff-86d6-25c3140ec874" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_834b708e-dfe0-46e0-bd85-79288a6b65a1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_67965c78-ff0f-4438-81bf-1574b730c61d" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_834b708e-dfe0-46e0-bd85-79288a6b65a1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_8ca8a430-bdcc-4cd3-a848-3ebc91917efd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_67965c78-ff0f-4438-81bf-1574b730c61d" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_8ca8a430-bdcc-4cd3-a848-3ebc91917efd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_25fe13db-08e0-4f6a-a6ec-2b8592e5dd1f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_6d23f7bc-9ea0-475b-bd96-188ab25a6b2e" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_25fe13db-08e0-4f6a-a6ec-2b8592e5dd1f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_FundsHeldForClientsCashAndCashEquivalentsAtCarryingValue_6b65e146-2b28-47d7-8ee0-ee1cd3e42488" xlink:href="pcty-20240930.xsd#pcty_FundsHeldForClientsCashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_6d23f7bc-9ea0-475b-bd96-188ab25a6b2e" xlink:to="loc_pcty_FundsHeldForClientsCashAndCashEquivalentsAtCarryingValue_6b65e146-2b28-47d7-8ee0-ee1cd3e42488" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesAbstract_c7924e12-0c86-45f0-b53e-5fe869cd9bf7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_6d23f7bc-9ea0-475b-bd96-188ab25a6b2e" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesAbstract_c7924e12-0c86-45f0-b53e-5fe869cd9bf7" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_9aa42da1-ee6c-4987-a322-cb1e33cc2b39" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAbstract_c7924e12-0c86-45f0-b53e-5fe869cd9bf7" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_9aa42da1-ee6c-4987-a322-cb1e33cc2b39" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Investments_8875ef1f-dce9-4647-b1fc-2b94118725f9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Investments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_6d23f7bc-9ea0-475b-bd96-188ab25a6b2e" xlink:to="loc_us-gaap_Investments_8875ef1f-dce9-4647-b1fc-2b94118725f9" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/DebtDetails" xlink:type="simple" xlink:href="pcty-20240930.xsd#DebtDetails"/>
  <link:definitionLink xlink:role="http://www.paylocity.com/role/DebtDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityLineItems_838dd881-0f61-4768-922b-1098fa542ce5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LineOfCreditFacilityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityTable_62310523-facf-4440-8cd0-1598acf2ce41" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LineOfCreditFacilityTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_838dd881-0f61-4768-922b-1098fa542ce5" xlink:to="loc_us-gaap_LineOfCreditFacilityTable_62310523-facf-4440-8cd0-1598acf2ce41" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_adbe3b22-7597-480e-8249-421c213fdaba" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_62310523-facf-4440-8cd0-1598acf2ce41" xlink:to="loc_us-gaap_CreditFacilityAxis_adbe3b22-7597-480e-8249-421c213fdaba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_adbe3b22-7597-480e-8249-421c213fdaba_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_adbe3b22-7597-480e-8249-421c213fdaba" xlink:to="loc_us-gaap_CreditFacilityDomain_adbe3b22-7597-480e-8249-421c213fdaba_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_66fd4427-d0de-4a29-9fd7-8003ae121a2a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_adbe3b22-7597-480e-8249-421c213fdaba" xlink:to="loc_us-gaap_CreditFacilityDomain_66fd4427-d0de-4a29-9fd7-8003ae121a2a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_e83e93c3-6bca-49a3-9cd3-626ef031af29" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_66fd4427-d0de-4a29-9fd7-8003ae121a2a" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_e83e93c3-6bca-49a3-9cd3-626ef031af29" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_7eaf2e9f-4489-4356-9684-b7d3fc4831b3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_62310523-facf-4440-8cd0-1598acf2ce41" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_7eaf2e9f-4489-4356-9684-b7d3fc4831b3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_7eaf2e9f-4489-4356-9684-b7d3fc4831b3_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_7eaf2e9f-4489-4356-9684-b7d3fc4831b3" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_7eaf2e9f-4489-4356-9684-b7d3fc4831b3_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_944f2cae-a94b-487b-897e-cb24568a1157" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_7eaf2e9f-4489-4356-9684-b7d3fc4831b3" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_944f2cae-a94b-487b-897e-cb24568a1157" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_4abb46bf-aa9a-4894-9530-bedb87613165" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_944f2cae-a94b-487b-897e-cb24568a1157" xlink:to="loc_us-gaap_SecuredDebtMember_4abb46bf-aa9a-4894-9530-bedb87613165" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_dcc6213b-bea9-468c-8f93-d79be07c37fb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VariableRateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_62310523-facf-4440-8cd0-1598acf2ce41" xlink:to="loc_us-gaap_VariableRateAxis_dcc6213b-bea9-468c-8f93-d79be07c37fb" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_dcc6213b-bea9-468c-8f93-d79be07c37fb_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_dcc6213b-bea9-468c-8f93-d79be07c37fb" xlink:to="loc_us-gaap_VariableRateDomain_dcc6213b-bea9-468c-8f93-d79be07c37fb_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_a47a092d-84f5-4c71-a336-0e38f322c613" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_dcc6213b-bea9-468c-8f93-d79be07c37fb" xlink:to="loc_us-gaap_VariableRateDomain_a47a092d-84f5-4c71-a336-0e38f322c613" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember_48e5a5bb-986f-4913-9615-23a393d8f5fd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_a47a092d-84f5-4c71-a336-0e38f322c613" xlink:to="loc_us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember_48e5a5bb-986f-4913-9615-23a393d8f5fd" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BaseRateMember_7478f461-4264-42e5-aef9-c01cd60859bc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BaseRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_a47a092d-84f5-4c71-a336-0e38f322c613" xlink:to="loc_us-gaap_BaseRateMember_7478f461-4264-42e5-aef9-c01cd60859bc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_87d9c744-35e6-4a6a-997e-d90cc9948dd6" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_62310523-facf-4440-8cd0-1598acf2ce41" xlink:to="loc_srt_RangeAxis_87d9c744-35e6-4a6a-997e-d90cc9948dd6" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_87d9c744-35e6-4a6a-997e-d90cc9948dd6_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_87d9c744-35e6-4a6a-997e-d90cc9948dd6" xlink:to="loc_srt_RangeMember_87d9c744-35e6-4a6a-997e-d90cc9948dd6_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_4c10ab6b-48bb-4700-b3ce-c3d56429dce9" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_87d9c744-35e6-4a6a-997e-d90cc9948dd6" xlink:to="loc_srt_RangeMember_4c10ab6b-48bb-4700-b3ce-c3d56429dce9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_7b57a43b-d762-452d-8720-160c5d30295f" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_4c10ab6b-48bb-4700-b3ce-c3d56429dce9" xlink:to="loc_srt_MinimumMember_7b57a43b-d762-452d-8720-160c5d30295f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_1da7404c-4e11-45be-afcd-2aa42a18c378" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_4c10ab6b-48bb-4700-b3ce-c3d56429dce9" xlink:to="loc_srt_MaximumMember_1da7404c-4e11-45be-afcd-2aa42a18c378" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_eb91592a-bd6c-479b-9f4a-f75b83338aac" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_838dd881-0f61-4768-922b-1098fa542ce5" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_eb91592a-bd6c-479b-9f4a-f75b83338aac" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_LineOfCreditFacilityContingentIncreaseAggregateMaximumBorrowingCapacity_c5204d09-d43c-4663-b650-a726009d4692" xlink:href="pcty-20240930.xsd#pcty_LineOfCreditFacilityContingentIncreaseAggregateMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_838dd881-0f61-4768-922b-1098fa542ce5" xlink:to="loc_pcty_LineOfCreditFacilityContingentIncreaseAggregateMaximumBorrowingCapacity_c5204d09-d43c-4663-b650-a726009d4692" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_8a22e45b-3dd9-4d2a-82cb-d98be5896a64" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_838dd881-0f61-4768-922b-1098fa542ce5" xlink:to="loc_us-gaap_LongTermDebt_8a22e45b-3dd9-4d2a-82cb-d98be5896a64" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromLinesOfCredit_2a5bb022-c05b-410d-9453-aa9ad8c18a89" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromLinesOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_838dd881-0f61-4768-922b-1098fa542ce5" xlink:to="loc_us-gaap_ProceedsFromLinesOfCredit_2a5bb022-c05b-410d-9453-aa9ad8c18a89" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_6ada7e4a-0195-4256-8ac8-0540b2a461b7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_838dd881-0f61-4768-922b-1098fa542ce5" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_6ada7e4a-0195-4256-8ac8-0540b2a461b7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_CreditFacilityCovenantConsolidatedLeverageRatio_7b55509a-58cc-4bf3-95e5-bcb3845d49a2" xlink:href="pcty-20240930.xsd#pcty_CreditFacilityCovenantConsolidatedLeverageRatio"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_838dd881-0f61-4768-922b-1098fa542ce5" xlink:to="loc_pcty_CreditFacilityCovenantConsolidatedLeverageRatio_7b55509a-58cc-4bf3-95e5-bcb3845d49a2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_CreditFacilityCovenantSeniorSecuredLeverageRatio_6ce91e8e-21b6-4498-a548-f92ba711c951" xlink:href="pcty-20240930.xsd#pcty_CreditFacilityCovenantSeniorSecuredLeverageRatio"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_838dd881-0f61-4768-922b-1098fa542ce5" xlink:to="loc_pcty_CreditFacilityCovenantSeniorSecuredLeverageRatio_6ce91e8e-21b6-4498-a548-f92ba711c951" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_CreditFacilityCovenantConsolidatedInterestCoverageRatio_9ef34afb-be73-405c-a569-71d869fa4895" xlink:href="pcty-20240930.xsd#pcty_CreditFacilityCovenantConsolidatedInterestCoverageRatio"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_838dd881-0f61-4768-922b-1098fa542ce5" xlink:to="loc_pcty_CreditFacilityCovenantConsolidatedInterestCoverageRatio_9ef34afb-be73-405c-a569-71d869fa4895" xlink:type="arc" order="7"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/StockBasedCompensationGeneralInformationDetails" xlink:type="simple" xlink:href="pcty-20240930.xsd#StockBasedCompensationGeneralInformationDetails"/>
  <link:definitionLink xlink:role="http://www.paylocity.com/role/StockBasedCompensationGeneralInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_89147734-08ba-4acb-9f16-7f6c98134d01" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_d7c2c48a-b81f-4b21-bb9b-92b384f8b381" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_89147734-08ba-4acb-9f16-7f6c98134d01" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_d7c2c48a-b81f-4b21-bb9b-92b384f8b381" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_4fab1c69-eae0-4447-becf-aaad466fa290" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_d7c2c48a-b81f-4b21-bb9b-92b384f8b381" xlink:to="loc_us-gaap_PlanNameAxis_4fab1c69-eae0-4447-becf-aaad466fa290" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_4fab1c69-eae0-4447-becf-aaad466fa290_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_4fab1c69-eae0-4447-becf-aaad466fa290" xlink:to="loc_us-gaap_PlanNameDomain_4fab1c69-eae0-4447-becf-aaad466fa290_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_577ae2a4-6cdf-4394-8c7d-e341be16ecc2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_4fab1c69-eae0-4447-becf-aaad466fa290" xlink:to="loc_us-gaap_PlanNameDomain_577ae2a4-6cdf-4394-8c7d-e341be16ecc2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_EquityIncentivePlansMember_4c22e886-ec27-48bc-99ea-657bf95a1756" xlink:href="pcty-20240930.xsd#pcty_EquityIncentivePlansMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_577ae2a4-6cdf-4394-8c7d-e341be16ecc2" xlink:to="loc_pcty_EquityIncentivePlansMember_4c22e886-ec27-48bc-99ea-657bf95a1756" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_497d7e89-b036-469b-a8bf-aafe1ee0dad2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_89147734-08ba-4acb-9f16-7f6c98134d01" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_497d7e89-b036-469b-a8bf-aafe1ee0dad2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfCapitalSharesReservedForIssuance_e1cf0d84-a026-419d-9fd0-955cd6574ee4" xlink:href="pcty-20240930.xsd#pcty_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfCapitalSharesReservedForIssuance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_89147734-08ba-4acb-9f16-7f6c98134d01" xlink:to="loc_pcty_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfCapitalSharesReservedForIssuance_e1cf0d84-a026-419d-9fd0-955cd6574ee4" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/StockBasedCompensationCompensationExpenseDetails" xlink:type="simple" xlink:href="pcty-20240930.xsd#StockBasedCompensationCompensationExpenseDetails"/>
  <link:definitionLink xlink:role="http://www.paylocity.com/role/StockBasedCompensationCompensationExpenseDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_2dda5ce9-2766-4748-8e44-74ab433d21f4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_3c36a1a1-57af-4565-aff8-d34418c82fe6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_2dda5ce9-2766-4748-8e44-74ab433d21f4" xlink:to="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_3c36a1a1-57af-4565-aff8-d34418c82fe6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_19f9349d-ce95-4964-ad52-5077afe422ca" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeStatementLocationAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_3c36a1a1-57af-4565-aff8-d34418c82fe6" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_19f9349d-ce95-4964-ad52-5077afe422ca" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_19f9349d-ce95-4964-ad52-5077afe422ca_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_19f9349d-ce95-4964-ad52-5077afe422ca" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_19f9349d-ce95-4964-ad52-5077afe422ca_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_65f62c12-4091-474c-b02d-00750062333c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncomeStatementLocationDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_19f9349d-ce95-4964-ad52-5077afe422ca" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_65f62c12-4091-474c-b02d-00750062333c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfSalesMember_73ec2f7d-377d-49ed-9372-3ff4f48ebc51" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CostOfSalesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_65f62c12-4091-474c-b02d-00750062333c" xlink:to="loc_us-gaap_CostOfSalesMember_73ec2f7d-377d-49ed-9372-3ff4f48ebc51" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingAndMarketingExpenseMember_791b7460-8b03-4336-82b0-1a1b7de19836" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SellingAndMarketingExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_65f62c12-4091-474c-b02d-00750062333c" xlink:to="loc_us-gaap_SellingAndMarketingExpenseMember_791b7460-8b03-4336-82b0-1a1b7de19836" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpenseMember_833a472b-56c0-477b-8219-6b976e7d931e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ResearchAndDevelopmentExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_65f62c12-4091-474c-b02d-00750062333c" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpenseMember_833a472b-56c0-477b-8219-6b976e7d931e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpenseMember_1107bae0-96b6-4fc6-8272-cd82134103cf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GeneralAndAdministrativeExpenseMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_65f62c12-4091-474c-b02d-00750062333c" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpenseMember_1107bae0-96b6-4fc6-8272-cd82134103cf" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_bd2a3c65-e459-4808-9330-db3bec80766f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_2dda5ce9-2766-4748-8e44-74ab433d21f4" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_bd2a3c65-e459-4808-9330-db3bec80766f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount_2e4778f6-324b-4254-8d29-68a23b079694" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_2dda5ce9-2766-4748-8e44-74ab433d21f4" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount_2e4778f6-324b-4254-8d29-68a23b079694" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedAbstract_8b2c0d78-1a3f-4ec5-bd88-ab9d8a3bfdf2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_2dda5ce9-2766-4748-8e44-74ab433d21f4" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedAbstract_8b2c0d78-1a3f-4ec5-bd88-ab9d8a3bfdf2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_cd454068-f2de-45a3-97d8-a84cb49cd1ec" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedAbstract_8b2c0d78-1a3f-4ec5-bd88-ab9d8a3bfdf2" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_cd454068-f2de-45a3-97d8-a84cb49cd1ec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_d732015c-532a-4353-afb6-edde2836285d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedAbstract_8b2c0d78-1a3f-4ec5-bd88-ab9d8a3bfdf2" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_d732015c-532a-4353-afb6-edde2836285d" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/StockBasedCompensationStockOptionActivityDetails" xlink:type="simple" xlink:href="pcty-20240930.xsd#StockBasedCompensationStockOptionActivityDetails"/>
  <link:definitionLink xlink:role="http://www.paylocity.com/role/StockBasedCompensationStockOptionActivityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_78beda01-7693-459e-9a07-ca42dff9d58d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_1a3ac012-f85e-4edf-957d-97170ef23dee" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_78beda01-7693-459e-9a07-ca42dff9d58d" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_1a3ac012-f85e-4edf-957d-97170ef23dee" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_3b48afea-ca4d-40e5-b01d-b53e05b379c5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_1a3ac012-f85e-4edf-957d-97170ef23dee" xlink:to="loc_us-gaap_AwardTypeAxis_3b48afea-ca4d-40e5-b01d-b53e05b379c5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_3b48afea-ca4d-40e5-b01d-b53e05b379c5_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_3b48afea-ca4d-40e5-b01d-b53e05b379c5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_3b48afea-ca4d-40e5-b01d-b53e05b379c5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_5a68ca87-ddec-4621-96a3-c592ce63fce7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_3b48afea-ca4d-40e5-b01d-b53e05b379c5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_5a68ca87-ddec-4621-96a3-c592ce63fce7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_StockOptionsMember_4220961f-b6fc-45c3-95d1-2e59cf67b648" xlink:href="pcty-20240930.xsd#pcty_StockOptionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_5a68ca87-ddec-4621-96a3-c592ce63fce7" xlink:to="loc_pcty_StockOptionsMember_4220961f-b6fc-45c3-95d1-2e59cf67b648" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_6f0ee654-b12b-4155-9532-f4897bcec0f8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_78beda01-7693-459e-9a07-ca42dff9d58d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_6f0ee654-b12b-4155-9532-f4897bcec0f8" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_7def3f6d-5ad1-4cbe-9290-b4e90b9c801d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_6f0ee654-b12b-4155-9532-f4897bcec0f8" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_7def3f6d-5ad1-4cbe-9290-b4e90b9c801d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_726ec793-fa74-43b5-a69f-e83baab9104d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_6f0ee654-b12b-4155-9532-f4897bcec0f8" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_726ec793-fa74-43b5-a69f-e83baab9104d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_8fa1827c-66ea-4867-967f-cd32703671ad" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_6f0ee654-b12b-4155-9532-f4897bcec0f8" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_8fa1827c-66ea-4867-967f-cd32703671ad" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_4ff3ccea-10e9-4b42-8827-d90c27342397" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_9ec0a05e-de0e-4feb-9ec5-5951bf7f8280" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_78beda01-7693-459e-9a07-ca42dff9d58d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_9ec0a05e-de0e-4feb-9ec5-5951bf7f8280" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_b7eb72dd-3dda-4b73-8693-a9d604118ca5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_9ec0a05e-de0e-4feb-9ec5-5951bf7f8280" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_b7eb72dd-3dda-4b73-8693-a9d604118ca5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_4a472456-6621-422d-a610-44987739ea4f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_9ec0a05e-de0e-4feb-9ec5-5951bf7f8280" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_4a472456-6621-422d-a610-44987739ea4f" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_5385f009-71f3-45ce-8ee7-86f5b964feff" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_aeb59c00-76d7-4fb0-aa68-e63848cf4567" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_78beda01-7693-459e-9a07-ca42dff9d58d" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_aeb59c00-76d7-4fb0-aa68-e63848cf4567" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_4d7833ea-20ba-4075-9a17-a295ff26c935" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_aeb59c00-76d7-4fb0-aa68-e63848cf4567" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_4d7833ea-20ba-4075-9a17-a295ff26c935" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_dd37146a-c11c-4b88-b719-fc738a309ceb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_aeb59c00-76d7-4fb0-aa68-e63848cf4567" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_dd37146a-c11c-4b88-b719-fc738a309ceb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_2e10d812-28d9-434c-ae30-6544d8e284d0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_aeb59c00-76d7-4fb0-aa68-e63848cf4567" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_2e10d812-28d9-434c-ae30-6544d8e284d0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_78596540-e791-4b39-8c87-77a83af992f0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_4fd8add6-f685-44e7-9bf9-d4c86f3017f2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_aeb59c00-76d7-4fb0-aa68-e63848cf4567" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_4fd8add6-f685-44e7-9bf9-d4c86f3017f2" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_b6e20a6e-ba3f-418a-b331-18535f3a7d0c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_aeb59c00-76d7-4fb0-aa68-e63848cf4567" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_b6e20a6e-ba3f-418a-b331-18535f3a7d0c" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_daf7407f-dc94-44a8-ad63-9410998f8bad" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_aeb59c00-76d7-4fb0-aa68-e63848cf4567" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_daf7407f-dc94-44a8-ad63-9410998f8bad" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_5aa70ae7-1206-4f62-9e42-3d2448b839bd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_aeb59c00-76d7-4fb0-aa68-e63848cf4567" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue_5aa70ae7-1206-4f62-9e42-3d2448b839bd" xlink:type="arc" order="8"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/StockBasedCompensationRSUActivityDetails" xlink:type="simple" xlink:href="pcty-20240930.xsd#StockBasedCompensationRSUActivityDetails"/>
  <link:definitionLink xlink:role="http://www.paylocity.com/role/StockBasedCompensationRSUActivityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_70d00aa2-b393-4eae-a32d-b8a81faae657" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2c828fcd-b957-48de-9400-9853d04b50ca" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_70d00aa2-b393-4eae-a32d-b8a81faae657" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2c828fcd-b957-48de-9400-9853d04b50ca" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_6e377fa0-3460-4246-96c4-7b1bb2e2173c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2c828fcd-b957-48de-9400-9853d04b50ca" xlink:to="loc_us-gaap_AwardTypeAxis_6e377fa0-3460-4246-96c4-7b1bb2e2173c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_6e377fa0-3460-4246-96c4-7b1bb2e2173c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_6e377fa0-3460-4246-96c4-7b1bb2e2173c" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_6e377fa0-3460-4246-96c4-7b1bb2e2173c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_a6a2dc1a-4151-4728-baa4-241bdb4a73d5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_6e377fa0-3460-4246-96c4-7b1bb2e2173c" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_a6a2dc1a-4151-4728-baa4-241bdb4a73d5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_8f7e031e-0c1b-4f45-8fe3-b4a694b6c65e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_a6a2dc1a-4151-4728-baa4-241bdb4a73d5" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_8f7e031e-0c1b-4f45-8fe3-b4a694b6c65e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_f82a30df-de21-4402-9b30-da692036512c" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_2c828fcd-b957-48de-9400-9853d04b50ca" xlink:to="loc_srt_RangeAxis_f82a30df-de21-4402-9b30-da692036512c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_f82a30df-de21-4402-9b30-da692036512c_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_f82a30df-de21-4402-9b30-da692036512c" xlink:to="loc_srt_RangeMember_f82a30df-de21-4402-9b30-da692036512c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_2c5f7c76-36f0-4ed4-8282-b09cae699024" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_f82a30df-de21-4402-9b30-da692036512c" xlink:to="loc_srt_RangeMember_2c5f7c76-36f0-4ed4-8282-b09cae699024" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_bb90face-0778-4e40-8c1c-58a00e78d949" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_2c5f7c76-36f0-4ed4-8282-b09cae699024" xlink:to="loc_srt_MinimumMember_bb90face-0778-4e40-8c1c-58a00e78d949" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_e33f2638-1722-4666-ab09-c308981dc025" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_2c5f7c76-36f0-4ed4-8282-b09cae699024" xlink:to="loc_srt_MaximumMember_e33f2638-1722-4666-ab09-c308981dc025" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_369eee40-d7ba-4ad4-be94-e897e09f82d5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_70d00aa2-b393-4eae-a32d-b8a81faae657" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_369eee40-d7ba-4ad4-be94-e897e09f82d5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_e00a42b9-e9c1-4532-8395-e8fc2cc7a35a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_70d00aa2-b393-4eae-a32d-b8a81faae657" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_e00a42b9-e9c1-4532-8395-e8fc2cc7a35a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_cc387cd9-047c-49a9-81c2-144728c8d43e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_e00a42b9-e9c1-4532-8395-e8fc2cc7a35a" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_cc387cd9-047c-49a9-81c2-144728c8d43e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_fb59037a-cb40-4272-81b7-6687b5eb186b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_e00a42b9-e9c1-4532-8395-e8fc2cc7a35a" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_fb59037a-cb40-4272-81b7-6687b5eb186b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_291a013e-949d-49f1-976b-8c155819836d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_e00a42b9-e9c1-4532-8395-e8fc2cc7a35a" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_291a013e-949d-49f1-976b-8c155819836d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_bc1be49c-5c0d-418d-b824-ae47801ca70f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_e00a42b9-e9c1-4532-8395-e8fc2cc7a35a" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_bc1be49c-5c0d-418d-b824-ae47801ca70f" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_4cdffe89-25de-44b8-96a4-65a7f08aa10d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_bc074b2c-9d69-44d4-83a9-5784cd39f6b8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_70d00aa2-b393-4eae-a32d-b8a81faae657" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_bc074b2c-9d69-44d4-83a9-5784cd39f6b8" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_5c0c024c-f53d-4bcb-9042-ac4e7f2f5cee" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_bc074b2c-9d69-44d4-83a9-5784cd39f6b8" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_5c0c024c-f53d-4bcb-9042-ac4e7f2f5cee" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_56590f59-5b65-4200-81b6-f74e5d4308f3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_bc074b2c-9d69-44d4-83a9-5784cd39f6b8" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_56590f59-5b65-4200-81b6-f74e5d4308f3" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_a8a7b93b-f85b-4efc-b085-7d04103b0df3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_bc074b2c-9d69-44d4-83a9-5784cd39f6b8" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_a8a7b93b-f85b-4efc-b085-7d04103b0df3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_13218df6-272c-424c-bd6a-2584ba079db1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_bc074b2c-9d69-44d4-83a9-5784cd39f6b8" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_13218df6-272c-424c-bd6a-2584ba079db1" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_0d9688c8-8202-4d04-895f-874815424388" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/StockBasedCompensationPSUActivityDetails" xlink:type="simple" xlink:href="pcty-20240930.xsd#StockBasedCompensationPSUActivityDetails"/>
  <link:definitionLink xlink:role="http://www.paylocity.com/role/StockBasedCompensationPSUActivityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_936edb6a-0780-4bca-bfc6-ee871bbd5ad1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_9fd7d7c2-3dfd-4fa4-8e5c-da64613493e9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_936edb6a-0780-4bca-bfc6-ee871bbd5ad1" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_9fd7d7c2-3dfd-4fa4-8e5c-da64613493e9" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_8ffb63a8-155a-41c5-93d8-7bdde91fdf40" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_9fd7d7c2-3dfd-4fa4-8e5c-da64613493e9" xlink:to="loc_us-gaap_AwardTypeAxis_8ffb63a8-155a-41c5-93d8-7bdde91fdf40" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_8ffb63a8-155a-41c5-93d8-7bdde91fdf40_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_8ffb63a8-155a-41c5-93d8-7bdde91fdf40" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_8ffb63a8-155a-41c5-93d8-7bdde91fdf40_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_b74eb781-e089-4d12-8dd4-e82192e054da" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_8ffb63a8-155a-41c5-93d8-7bdde91fdf40" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_b74eb781-e089-4d12-8dd4-e82192e054da" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_806c4c07-a93b-4849-b65f-7ee0889c2387" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PerformanceSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_b74eb781-e089-4d12-8dd4-e82192e054da" xlink:to="loc_us-gaap_PerformanceSharesMember_806c4c07-a93b-4849-b65f-7ee0889c2387" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_PSUPerformanceMeasurementPeriod_759907e3-4ea2-4319-8d46-06f31a68a67a" xlink:href="pcty-20240930.xsd#pcty_PSUPerformanceMeasurementPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_936edb6a-0780-4bca-bfc6-ee871bbd5ad1" xlink:to="loc_pcty_PSUPerformanceMeasurementPeriod_759907e3-4ea2-4319-8d46-06f31a68a67a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_90578302-63ad-4bb9-b577-a5621e0e9cdc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_936edb6a-0780-4bca-bfc6-ee871bbd5ad1" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_90578302-63ad-4bb9-b577-a5621e0e9cdc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_PercentageOfSharesTargetToEachMarketShareUnits_c2a4901c-2597-48c4-bf80-b70e15e82247" xlink:href="pcty-20240930.xsd#pcty_PercentageOfSharesTargetToEachMarketShareUnits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_936edb6a-0780-4bca-bfc6-ee871bbd5ad1" xlink:to="loc_pcty_PercentageOfSharesTargetToEachMarketShareUnits_c2a4901c-2597-48c4-bf80-b70e15e82247" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_7526cf61-4ad0-451a-9b73-faf12f5e041b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_936edb6a-0780-4bca-bfc6-ee871bbd5ad1" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_7526cf61-4ad0-451a-9b73-faf12f5e041b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_4555e6be-0f47-4e3c-9793-881230ca1aa0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_7526cf61-4ad0-451a-9b73-faf12f5e041b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_4555e6be-0f47-4e3c-9793-881230ca1aa0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_3fd44224-ad22-4041-90ac-bcdbca632739" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_7526cf61-4ad0-451a-9b73-faf12f5e041b" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_3fd44224-ad22-4041-90ac-bcdbca632739" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_dc9a3a98-37cc-452a-9f97-1c377441ae51" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_936edb6a-0780-4bca-bfc6-ee871bbd5ad1" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_dc9a3a98-37cc-452a-9f97-1c377441ae51" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_604c6b1f-6f04-4fdd-acdc-9f395ef7f450" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_dc9a3a98-37cc-452a-9f97-1c377441ae51" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_604c6b1f-6f04-4fdd-acdc-9f395ef7f450" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_6cf7cc3d-b058-4975-ab37-b7d3ec47b879" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_dc9a3a98-37cc-452a-9f97-1c377441ae51" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_6cf7cc3d-b058-4975-ab37-b7d3ec47b879" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/StockBasedCompensationMSUActivityDetails" xlink:type="simple" xlink:href="pcty-20240930.xsd#StockBasedCompensationMSUActivityDetails"/>
  <link:definitionLink xlink:role="http://www.paylocity.com/role/StockBasedCompensationMSUActivityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_fad5fce5-a723-4600-adef-c20aa2955047" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_7fb7f70f-383e-4e2f-b38c-c99950f4cf4e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_fad5fce5-a723-4600-adef-c20aa2955047" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_7fb7f70f-383e-4e2f-b38c-c99950f4cf4e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_56388af8-c935-450d-8a24-4e72252daf16" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_7fb7f70f-383e-4e2f-b38c-c99950f4cf4e" xlink:to="loc_us-gaap_AwardTypeAxis_56388af8-c935-450d-8a24-4e72252daf16" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_56388af8-c935-450d-8a24-4e72252daf16_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_56388af8-c935-450d-8a24-4e72252daf16" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_56388af8-c935-450d-8a24-4e72252daf16_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_351fe4b8-9e30-4258-8075-76d6fd200eb8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_56388af8-c935-450d-8a24-4e72252daf16" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_351fe4b8-9e30-4258-8075-76d6fd200eb8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_MarketShareUnitsMember_a6793e23-6073-482e-b339-bf5558c8038b" xlink:href="pcty-20240930.xsd#pcty_MarketShareUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_351fe4b8-9e30-4258-8075-76d6fd200eb8" xlink:to="loc_pcty_MarketShareUnitsMember_a6793e23-6073-482e-b339-bf5558c8038b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_fe7e07ab-bc49-46e8-ae02-808f8e9414b0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_fad5fce5-a723-4600-adef-c20aa2955047" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_fe7e07ab-bc49-46e8-ae02-808f8e9414b0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_PercentageOfSharesTargetToEachMarketShareUnits_e849bf74-e122-4477-83db-810f3d8c7304" xlink:href="pcty-20240930.xsd#pcty_PercentageOfSharesTargetToEachMarketShareUnits"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_fad5fce5-a723-4600-adef-c20aa2955047" xlink:to="loc_pcty_PercentageOfSharesTargetToEachMarketShareUnits_e849bf74-e122-4477-83db-810f3d8c7304" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_bb893dcc-3ffc-4c2e-a250-89a2701d3343" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_fad5fce5-a723-4600-adef-c20aa2955047" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_bb893dcc-3ffc-4c2e-a250-89a2701d3343" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_10734e00-8ca5-4828-8837-7c962c6404f0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_bb893dcc-3ffc-4c2e-a250-89a2701d3343" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_10734e00-8ca5-4828-8837-7c962c6404f0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_48272754-c0f9-4e24-9212-5c40b26f61d5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_bb893dcc-3ffc-4c2e-a250-89a2701d3343" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_48272754-c0f9-4e24-9212-5c40b26f61d5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_68e215a1-dfad-4707-8f1e-ea6bf5f59ef6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_bb893dcc-3ffc-4c2e-a250-89a2701d3343" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_68e215a1-dfad-4707-8f1e-ea6bf5f59ef6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_876df469-3ab1-44b6-92fb-7edc2e572921" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_bb893dcc-3ffc-4c2e-a250-89a2701d3343" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_876df469-3ab1-44b6-92fb-7edc2e572921" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_fa51e6fd-5e15-423c-84c4-8100d82c46b0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_d2e8a893-3fb0-40fa-8bb7-e1bf323a41cd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_fad5fce5-a723-4600-adef-c20aa2955047" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_d2e8a893-3fb0-40fa-8bb7-e1bf323a41cd" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_01ce5d39-6c40-4a66-8cf3-5ab9aab0e5af" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_d2e8a893-3fb0-40fa-8bb7-e1bf323a41cd" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_01ce5d39-6c40-4a66-8cf3-5ab9aab0e5af" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_0a615843-2471-47cc-a833-36c9fbe3238d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_d2e8a893-3fb0-40fa-8bb7-e1bf323a41cd" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_0a615843-2471-47cc-a833-36c9fbe3238d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_1ecb43bb-540f-43e4-a4e7-543bedaacf8b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_d2e8a893-3fb0-40fa-8bb7-e1bf323a41cd" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_1ecb43bb-540f-43e4-a4e7-543bedaacf8b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_b37833c9-0dd9-4e3e-abe1-720f8e9acc3a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_d2e8a893-3fb0-40fa-8bb7-e1bf323a41cd" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_b37833c9-0dd9-4e3e-abe1-720f8e9acc3a" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_8536da42-d30e-4f9e-ba62-065fcec12102" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/StockBasedCompensationMSUInformationDetails" xlink:type="simple" xlink:href="pcty-20240930.xsd#StockBasedCompensationMSUInformationDetails"/>
  <link:definitionLink xlink:role="http://www.paylocity.com/role/StockBasedCompensationMSUInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_3c9a8dbc-07fb-4059-8f33-28be7044d9a1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01d18aab-754b-4fb6-b260-9db8787a8b2b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_3c9a8dbc-07fb-4059-8f33-28be7044d9a1" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01d18aab-754b-4fb6-b260-9db8787a8b2b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_061b2467-883c-40b9-82e0-47806e8ccd3a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01d18aab-754b-4fb6-b260-9db8787a8b2b" xlink:to="loc_us-gaap_AwardTypeAxis_061b2467-883c-40b9-82e0-47806e8ccd3a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_061b2467-883c-40b9-82e0-47806e8ccd3a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_061b2467-883c-40b9-82e0-47806e8ccd3a" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_061b2467-883c-40b9-82e0-47806e8ccd3a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_462275b2-d0ed-4b6b-bfe6-173ae23b5c25" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_061b2467-883c-40b9-82e0-47806e8ccd3a" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_462275b2-d0ed-4b6b-bfe6-173ae23b5c25" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_MarketShareUnitsMember_6aabc612-09c0-4339-8ba8-03e1c1c1ab7c" xlink:href="pcty-20240930.xsd#pcty_MarketShareUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_462275b2-d0ed-4b6b-bfe6-173ae23b5c25" xlink:to="loc_pcty_MarketShareUnitsMember_6aabc612-09c0-4339-8ba8-03e1c1c1ab7c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_d9ae5756-665e-4a36-b170-5fcd6d3546b5" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01d18aab-754b-4fb6-b260-9db8787a8b2b" xlink:to="loc_srt_RangeAxis_d9ae5756-665e-4a36-b170-5fcd6d3546b5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_d9ae5756-665e-4a36-b170-5fcd6d3546b5_default" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_d9ae5756-665e-4a36-b170-5fcd6d3546b5" xlink:to="loc_srt_RangeMember_d9ae5756-665e-4a36-b170-5fcd6d3546b5_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_08282730-12a7-4ccb-a42e-d06df3627137" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_d9ae5756-665e-4a36-b170-5fcd6d3546b5" xlink:to="loc_srt_RangeMember_08282730-12a7-4ccb-a42e-d06df3627137" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_e8d336da-70ec-4e88-8d97-c64075fbb6c3" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_08282730-12a7-4ccb-a42e-d06df3627137" xlink:to="loc_srt_MinimumMember_e8d336da-70ec-4e88-8d97-c64075fbb6c3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_5338a83e-ad7a-40d1-9034-437853476d1c" xlink:href="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_08282730-12a7-4ccb-a42e-d06df3627137" xlink:to="loc_srt_MaximumMember_5338a83e-ad7a-40d1-9034-437853476d1c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_ae4e2e12-a16a-4841-8e23-243bdec21a25" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_3c9a8dbc-07fb-4059-8f33-28be7044d9a1" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_ae4e2e12-a16a-4841-8e23-243bdec21a25" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_8a9d299c-8184-4069-a3bd-140c51b80c22" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_ae4e2e12-a16a-4841-8e23-243bdec21a25" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_8a9d299c-8184-4069-a3bd-140c51b80c22" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_02bf9628-711e-4270-a091-3bd7652fc6e6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_ae4e2e12-a16a-4841-8e23-243bdec21a25" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_02bf9628-711e-4270-a091-3bd7652fc6e6" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_8f4c3bf5-d199-445c-90ee-298ba3ce7cd0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_ae4e2e12-a16a-4841-8e23-243bdec21a25" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_8f4c3bf5-d199-445c-90ee-298ba3ce7cd0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_0fdcd5f2-79d5-4b00-9a38-480b4936c3b3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_ae4e2e12-a16a-4841-8e23-243bdec21a25" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_0fdcd5f2-79d5-4b00-9a38-480b4936c3b3" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/NetIncomePerShareDetails" xlink:type="simple" xlink:href="pcty-20240930.xsd#NetIncomePerShareDetails"/>
  <link:definitionLink xlink:role="http://www.paylocity.com/role/NetIncomePerShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_abb47a7c-b365-4aba-9ccc-d792b68aa1c6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_ScheduleOfEarningsPerShareTable_c0a32666-5a46-466e-98df-f0b636cd152b" xlink:href="pcty-20240930.xsd#pcty_ScheduleOfEarningsPerShareTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_abb47a7c-b365-4aba-9ccc-d792b68aa1c6" xlink:to="loc_pcty_ScheduleOfEarningsPerShareTable_c0a32666-5a46-466e-98df-f0b636cd152b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_82486574-0069-41e5-9691-d8859f43dfc4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_pcty_ScheduleOfEarningsPerShareTable_c0a32666-5a46-466e-98df-f0b636cd152b" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_82486574-0069-41e5-9691-d8859f43dfc4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_82486574-0069-41e5-9691-d8859f43dfc4_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_82486574-0069-41e5-9691-d8859f43dfc4" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_82486574-0069-41e5-9691-d8859f43dfc4_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_3d165c15-0da2-4403-b25e-b09ba7c90484" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_82486574-0069-41e5-9691-d8859f43dfc4" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_3d165c15-0da2-4403-b25e-b09ba7c90484" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_4cacb593-c54f-4362-97f4-9f14386c2c6b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_3d165c15-0da2-4403-b25e-b09ba7c90484" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_4cacb593-c54f-4362-97f4-9f14386c2c6b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_1b6dc821-1282-47b0-a4d0-ac3bb6235ce5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PerformanceSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_3d165c15-0da2-4403-b25e-b09ba7c90484" xlink:to="loc_us-gaap_PerformanceSharesMember_1b6dc821-1282-47b0-a4d0-ac3bb6235ce5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_MarketShareUnitsMember_d705ce48-344c-4864-b696-6ba34f8f00ea" xlink:href="pcty-20240930.xsd#pcty_MarketShareUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_3d165c15-0da2-4403-b25e-b09ba7c90484" xlink:to="loc_pcty_MarketShareUnitsMember_d705ce48-344c-4864-b696-6ba34f8f00ea" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareReconciliationAbstract_39351850-57f3-47c1-8513-693ea6c1f246" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EarningsPerShareReconciliationAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_abb47a7c-b365-4aba-9ccc-d792b68aa1c6" xlink:to="loc_us-gaap_EarningsPerShareReconciliationAbstract_39351850-57f3-47c1-8513-693ea6c1f246" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_NumeratorForCalculationOfBasicAndDilutedNetLossPerShareAbstract_5a4c8951-784e-4345-b4b0-4bb16fb0b3fe" xlink:href="pcty-20240930.xsd#pcty_NumeratorForCalculationOfBasicAndDilutedNetLossPerShareAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareReconciliationAbstract_39351850-57f3-47c1-8513-693ea6c1f246" xlink:to="loc_pcty_NumeratorForCalculationOfBasicAndDilutedNetLossPerShareAbstract_5a4c8951-784e-4345-b4b0-4bb16fb0b3fe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_ba838145-903d-4a50-bec7-1ea7a314decf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_NumeratorForCalculationOfBasicAndDilutedNetLossPerShareAbstract_5a4c8951-784e-4345-b4b0-4bb16fb0b3fe" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_ba838145-903d-4a50-bec7-1ea7a314decf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_DenominatorForCalculationOfBasicAndDilutedNetLossPerShareAbstract_91016957-e754-4e6e-9ca0-e0165534f3bc" xlink:href="pcty-20240930.xsd#pcty_DenominatorForCalculationOfBasicAndDilutedNetLossPerShareAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareReconciliationAbstract_39351850-57f3-47c1-8513-693ea6c1f246" xlink:to="loc_pcty_DenominatorForCalculationOfBasicAndDilutedNetLossPerShareAbstract_91016957-e754-4e6e-9ca0-e0165534f3bc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasicAbstract_01c08844-6505-4ead-9ffc-57b0a6850c89" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasicAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_DenominatorForCalculationOfBasicAndDilutedNetLossPerShareAbstract_91016957-e754-4e6e-9ca0-e0165534f3bc" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasicAbstract_01c08844-6505-4ead-9ffc-57b0a6850c89" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_adfcf67e-aba7-4822-9ae4-a879f2dad912" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasicAbstract_01c08844-6505-4ead-9ffc-57b0a6850c89" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_adfcf67e-aba7-4822-9ae4-a879f2dad912" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_0adc9daa-0df7-4c49-9129-992a223eefbb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_DenominatorForCalculationOfBasicAndDilutedNetLossPerShareAbstract_91016957-e754-4e6e-9ca0-e0165534f3bc" xlink:to="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_0adc9daa-0df7-4c49-9129-992a223eefbb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_a5c07b37-0170-49bf-ab93-89964a41f99e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_0adc9daa-0df7-4c49-9129-992a223eefbb" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_a5c07b37-0170-49bf-ab93-89964a41f99e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_ab995f8d-80bd-4876-b381-4839fcbdd7c9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_DenominatorForCalculationOfBasicAndDilutedNetLossPerShareAbstract_91016957-e754-4e6e-9ca0-e0165534f3bc" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_ab995f8d-80bd-4876-b381-4839fcbdd7c9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_NetIncomePerShareAbstract_51d3d425-a803-4014-aeca-cc8dcd333df1" xlink:href="pcty-20240930.xsd#pcty_NetIncomePerShareAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareReconciliationAbstract_39351850-57f3-47c1-8513-693ea6c1f246" xlink:to="loc_pcty_NetIncomePerShareAbstract_51d3d425-a803-4014-aeca-cc8dcd333df1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_9514de1f-68fd-4d8d-a42a-c8cfc5c3db24" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_NetIncomePerShareAbstract_51d3d425-a803-4014-aeca-cc8dcd333df1" xlink:to="loc_us-gaap_EarningsPerShareBasic_9514de1f-68fd-4d8d-a42a-c8cfc5c3db24" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_de31b408-4a24-4255-bfb1-b20d11a79e8e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_NetIncomePerShareAbstract_51d3d425-a803-4014-aeca-cc8dcd333df1" xlink:to="loc_us-gaap_EarningsPerShareDiluted_de31b408-4a24-4255-bfb1-b20d11a79e8e" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_c154fd6e-7d1d-4ce5-975c-8696dc7ff98b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareReconciliationAbstract_39351850-57f3-47c1-8513-693ea6c1f246" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_c154fd6e-7d1d-4ce5-975c-8696dc7ff98b" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/SubsequentEventsDetails" xlink:type="simple" xlink:href="pcty-20240930.xsd#SubsequentEventsDetails"/>
  <link:definitionLink xlink:role="http://www.paylocity.com/role/SubsequentEventsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventLineItems_b1413585-9d9b-4113-8f1d-f25b5ca8f4ee" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTable_f16ebbcb-3514-4ed9-b2b7-b15074c86a76" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SubsequentEventLineItems_b1413585-9d9b-4113-8f1d-f25b5ca8f4ee" xlink:to="loc_us-gaap_SubsequentEventTable_f16ebbcb-3514-4ed9-b2b7-b15074c86a76" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_9a1ed537-e5db-45ec-a765-d80fbbf81dfd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_f16ebbcb-3514-4ed9-b2b7-b15074c86a76" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_9a1ed537-e5db-45ec-a765-d80fbbf81dfd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_9a1ed537-e5db-45ec-a765-d80fbbf81dfd_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_9a1ed537-e5db-45ec-a765-d80fbbf81dfd" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_9a1ed537-e5db-45ec-a765-d80fbbf81dfd_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_5bb158b8-d298-4fe4-adcc-5fe5359590f7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_9a1ed537-e5db-45ec-a765-d80fbbf81dfd" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_5bb158b8-d298-4fe4-adcc-5fe5359590f7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubsequentEventMember_fee5a9a1-72a0-47cf-930b-0ced619b6127" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SubsequentEventMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_5bb158b8-d298-4fe4-adcc-5fe5359590f7" xlink:to="loc_us-gaap_SubsequentEventMember_fee5a9a1-72a0-47cf-930b-0ced619b6127" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_6f70929b-8f18-4f53-ae1a-01ba707bf9ae" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_SubsequentEventTable_f16ebbcb-3514-4ed9-b2b7-b15074c86a76" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_6f70929b-8f18-4f53-ae1a-01ba707bf9ae" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_6f70929b-8f18-4f53-ae1a-01ba707bf9ae_default" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_6f70929b-8f18-4f53-ae1a-01ba707bf9ae" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_6f70929b-8f18-4f53-ae1a-01ba707bf9ae_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_ac4fa68d-a582-46a2-8edd-2091bdb0b631" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_6f70929b-8f18-4f53-ae1a-01ba707bf9ae" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_ac4fa68d-a582-46a2-8edd-2091bdb0b631" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_AirbaseInc.Member_00a2bf67-f6a2-4342-825f-2b47246429f3" xlink:href="pcty-20240930.xsd#pcty_AirbaseInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_ac4fa68d-a582-46a2-8edd-2091bdb0b631" xlink:to="loc_pcty_AirbaseInc.Member_00a2bf67-f6a2-4342-825f-2b47246429f3" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_0c76347b-ba39-46b3-b53a-2bf5979341d5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SubsequentEventLineItems_b1413585-9d9b-4113-8f1d-f25b5ca8f4ee" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_0c76347b-ba39-46b3-b53a-2bf5979341d5" xlink:type="arc" order="0"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://xbrl.sec.gov/ecd/AwardTypeOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#AwardTypeOnly"/>
  <link:definitionLink xlink:role="http://xbrl.sec.gov/ecd/AwardTypeOnly" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_StockOptionsMember_73b82fa9-8865-422f-84a1-0a1b85a22199" xlink:href="pcty-20240930.xsd#pcty_StockOptionsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="loc_pcty_StockOptionsMember_73b82fa9-8865-422f-84a1-0a1b85a22199" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PerformanceSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="loc_us-gaap_PerformanceSharesMember" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_MarketShareUnitsMember_0152fe6c-d675-4740-8346-7e2d148dba77" xlink:href="pcty-20240930.xsd#pcty_MarketShareUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="loc_pcty_MarketShareUnitsMember_0152fe6c-d675-4740-8346-7e2d148dba77" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://xbrl.sec.gov/ecd/role/IndividualsOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#IndividualsOnly"/>
  <link:definitionLink xlink:role="http://xbrl.sec.gov/ecd/role/IndividualsOnly" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_ecd_AllIndividualsMember" xlink:href="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd#ecd_AllIndividualsMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_AndrewCappotelliMember_8e447ca5-4d8c-496d-b4f9-5c780e710f25" xlink:href="pcty-20240930.xsd#pcty_AndrewCappotelliMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ecd_AllIndividualsMember" xlink:to="loc_pcty_AndrewCappotelliMember_8e447ca5-4d8c-496d-b4f9-5c780e710f25" xlink:type="arc" order="2"/>
  </link:definitionLink>
</link:linkbase>
