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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:01a08bfd-73a4-7486-a656-ca9cb6e3c811,g:f083d8ac-639f-40c4-b43b-21e828c38b4c-->
<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-20260930.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_01a08bfd-746f-7058-9e53-67307bd9321b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementTable_01a08bfd-746f-7a9f-a140-8e9b83215862" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_StatementLineItems_01a08bfd-746f-7058-9e53-67307bd9321b" xlink:to="loc_us-gaap_StatementTable_01a08bfd-746f-7a9f-a140-8e9b83215862" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_01a08bfd-746f-756b-9fc2-6d5cbd11cacf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementEquityComponentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_StatementTable_01a08bfd-746f-7a9f-a140-8e9b83215862" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_01a08bfd-746f-756b-9fc2-6d5cbd11cacf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a08bfd-746f-756b-9fc2-6d5cbd11cacf_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a08bfd-746f-756b-9fc2-6d5cbd11cacf" xlink:to="loc_us-gaap_EquityComponentDomain_01a08bfd-746f-756b-9fc2-6d5cbd11cacf_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityComponentDomain_01a08bfd-746f-7222-928c-9e096f36c4ac" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EquityComponentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_01a08bfd-746f-756b-9fc2-6d5cbd11cacf" xlink:to="loc_us-gaap_EquityComponentDomain_01a08bfd-746f-7222-928c-9e096f36c4ac" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockMember_01a08bfd-746f-7244-9a88-5cf258d466ff" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a08bfd-746f-7222-928c-9e096f36c4ac" xlink:to="loc_us-gaap_CommonStockMember_01a08bfd-746f-7244-9a88-5cf258d466ff" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_01a08bfd-746f-71b0-8e47-32aae1c451f2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapitalMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a08bfd-746f-7222-928c-9e096f36c4ac" xlink:to="loc_us-gaap_AdditionalPaidInCapitalMember_01a08bfd-746f-71b0-8e47-32aae1c451f2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsMember_01a08bfd-746f-76cc-b7b8-b0810389b711" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a08bfd-746f-7222-928c-9e096f36c4ac" xlink:to="loc_us-gaap_RetainedEarningsMember_01a08bfd-746f-76cc-b7b8-b0810389b711" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a08bfd-746f-743a-8825-279afeb55b7e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_01a08bfd-746f-7222-928c-9e096f36c4ac" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeMember_01a08bfd-746f-743a-8825-279afeb55b7e" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a08bfd-746f-7d28-a289-fae7ac7cf6a6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_StatementLineItems_01a08bfd-746f-7058-9e53-67307bd9321b" xlink:to="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a08bfd-746f-7d28-a289-fae7ac7cf6a6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_01a08bfd-746f-70bc-8f79-541d6a08f1e4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a08bfd-746f-7d28-a289-fae7ac7cf6a6" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_01a08bfd-746f-70bc-8f79-541d6a08f1e4" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_01a08bfd-746f-7eba-8429-0c5ac4e18d64" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a08bfd-746f-7d28-a289-fae7ac7cf6a6" xlink:to="loc_us-gaap_StockholdersEquity_01a08bfd-746f-7eba-8429-0c5ac4e18d64" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_01a08bfd-746f-73b2-9a94-b0a43b2a8668" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a08bfd-746f-7d28-a289-fae7ac7cf6a6" xlink:to="loc_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue_01a08bfd-746f-73b2-9a94-b0a43b2a8668" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_StockIssuedDuringPeriodSharesEquityAwardVesting_01a08bfd-746f-783a-af23-bfd9534f4dee" xlink:href="pcty-20260930.xsd#pcty_StockIssuedDuringPeriodSharesEquityAwardVesting"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a08bfd-746f-7d28-a289-fae7ac7cf6a6" xlink:to="loc_pcty_StockIssuedDuringPeriodSharesEquityAwardVesting_01a08bfd-746f-783a-af23-bfd9534f4dee" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_NetSettlementForTaxesRelatedToEquityAwardsInShares_01a08bfd-746f-75b2-8e49-7997bdb582b9" xlink:href="pcty-20260930.xsd#pcty_NetSettlementForTaxesRelatedToEquityAwardsInShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a08bfd-746f-7d28-a289-fae7ac7cf6a6" xlink:to="loc_pcty_NetSettlementForTaxesRelatedToEquityAwardsInShares_01a08bfd-746f-75b2-8e49-7997bdb582b9" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_NetSettlementForTaxesAndorExercisePriceRelatedToEquityAwards_01a08bfd-746f-7b4b-a1ab-d3abdb5d7b84" xlink:href="pcty-20260930.xsd#pcty_NetSettlementForTaxesAndorExercisePriceRelatedToEquityAwards"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a08bfd-746f-7d28-a289-fae7ac7cf6a6" xlink:to="loc_pcty_NetSettlementForTaxesAndorExercisePriceRelatedToEquityAwards_01a08bfd-746f-7b4b-a1ab-d3abdb5d7b84" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_01a08bfd-746f-75ef-9514-d9e5705b1d50" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodShares"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a08bfd-746f-7d28-a289-fae7ac7cf6a6" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_01a08bfd-746f-75ef-9514-d9e5705b1d50" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_01a08bfd-746f-7dc5-baee-28b4110ce40f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a08bfd-746f-7d28-a289-fae7ac7cf6a6" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_01a08bfd-746f-7dc5-baee-28b4110ce40f" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_01a08bfd-746f-7e49-a477-b79ad78a4815" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a08bfd-746f-7d28-a289-fae7ac7cf6a6" xlink:to="loc_us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_01a08bfd-746f-7e49-a477-b79ad78a4815" xlink:type="arc" order="9"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_01a08bfd-746f-7f57-a9e5-653ccc235801" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a08bfd-746f-7d28-a289-fae7ac7cf6a6" xlink:to="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_01a08bfd-746f-7f57-a9e5-653ccc235801" xlink:type="arc" order="10"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_01a08bfd-746f-7535-9c8e-a95ce73e72ad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_01a08bfd-746f-7d28-a289-fae7ac7cf6a6" xlink:to="loc_us-gaap_NetIncomeLoss_01a08bfd-746f-7535-9c8e-a95ce73e72ad" xlink:type="arc" order="11"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_01a08bfd-746f-7cfa-8380-6cc993fd95d7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_01a08bfd-746f-7132-801a-0833c0b7a774" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/RevenueDisaggregationDetails" xlink:type="simple" xlink:href="pcty-20260930.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_01a08bfd-7536-78db-8208-764b44b6ffcf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_01a08bfd-7536-7bcd-9f7a-1a9f81487fb0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a08bfd-7536-78db-8208-764b44b6ffcf" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_01a08bfd-7536-7bcd-9f7a-1a9f81487fb0" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_01a08bfd-7536-77a0-91c1-f1729cba062d" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_01a08bfd-7536-7bcd-9f7a-1a9f81487fb0" xlink:to="loc_srt_ProductOrServiceAxis_01a08bfd-7536-77a0-91c1-f1729cba062d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_01a08bfd-7536-77a0-91c1-f1729cba062d_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_01a08bfd-7536-77a0-91c1-f1729cba062d" xlink:to="loc_srt_ProductsAndServicesDomain_01a08bfd-7536-77a0-91c1-f1729cba062d_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_01a08bfd-7536-7d49-8c83-2fa2022b9c4b" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_01a08bfd-7536-77a0-91c1-f1729cba062d" xlink:to="loc_srt_ProductsAndServicesDomain_01a08bfd-7536-7d49-8c83-2fa2022b9c4b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_RecurringFeesMember_01a08bfd-7536-7d5a-81cc-98b74ee1a678" xlink:href="pcty-20260930.xsd#pcty_RecurringFeesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_01a08bfd-7536-7d49-8c83-2fa2022b9c4b" xlink:to="loc_pcty_RecurringFeesMember_01a08bfd-7536-7d5a-81cc-98b74ee1a678" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_ImplementationServicesAndOtherMember_01a08bfd-7536-7059-aa3a-909a3ddb7994" xlink:href="pcty-20260930.xsd#pcty_ImplementationServicesAndOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_01a08bfd-7536-7d49-8c83-2fa2022b9c4b" xlink:to="loc_pcty_ImplementationServicesAndOtherMember_01a08bfd-7536-7059-aa3a-909a3ddb7994" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a08bfd-7536-752c-a3ac-082705db0ce2" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_01a08bfd-7536-7bcd-9f7a-1a9f81487fb0" xlink:to="loc_srt_RangeAxis_01a08bfd-7536-752c-a3ac-082705db0ce2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a08bfd-7536-752c-a3ac-082705db0ce2_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a08bfd-7536-752c-a3ac-082705db0ce2" xlink:to="loc_srt_RangeMember_01a08bfd-7536-752c-a3ac-082705db0ce2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a08bfd-7536-763d-920a-85ecab483bc1" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a08bfd-7536-752c-a3ac-082705db0ce2" xlink:to="loc_srt_RangeMember_01a08bfd-7536-763d-920a-85ecab483bc1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a08bfd-7536-75b2-9f42-bdcc9b05fb66" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a08bfd-7536-763d-920a-85ecab483bc1" xlink:to="loc_srt_MaximumMember_01a08bfd-7536-75b2-9f42-bdcc9b05fb66" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_CancellationNoticePeriod_01a08bfd-7536-725e-be20-d1249f334767" xlink:href="pcty-20260930.xsd#pcty_CancellationNoticePeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a08bfd-7536-78db-8208-764b44b6ffcf" xlink:to="loc_pcty_CancellationNoticePeriod_01a08bfd-7536-725e-be20-d1249f334767" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_PeriodOfTermArrangement_01a08bfd-7536-7a02-a555-376854d4bba0" xlink:href="pcty-20260930.xsd#pcty_PeriodOfTermArrangement"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a08bfd-7536-78db-8208-764b44b6ffcf" xlink:to="loc_pcty_PeriodOfTermArrangement_01a08bfd-7536-7a02-a555-376854d4bba0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_ContractsWithCustomersAbstract_01a08bfd-7536-75d7-b637-2ed73c8137e4" xlink:href="pcty-20260930.xsd#pcty_ContractsWithCustomersAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a08bfd-7536-78db-8208-764b44b6ffcf" xlink:to="loc_pcty_ContractsWithCustomersAbstract_01a08bfd-7536-75d7-b637-2ed73c8137e4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a08bfd-7536-72b0-9b13-4aa062ad240d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_ContractsWithCustomersAbstract_01a08bfd-7536-75d7-b637-2ed73c8137e4" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a08bfd-7536-72b0-9b13-4aa062ad240d" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/RevenueDeferredRevenueDetails" xlink:type="simple" xlink:href="pcty-20260930.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_01a08bfd-7536-77d1-beaa-7868ccb9e623" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_01a08bfd-7536-7715-81bf-66fd4d33f932" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a08bfd-7536-77d1-beaa-7868ccb9e623" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_01a08bfd-7536-7715-81bf-66fd4d33f932" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a08bfd-7536-71de-b4d8-bad56da41356" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_01a08bfd-7536-7715-81bf-66fd4d33f932" xlink:to="loc_srt_RangeAxis_01a08bfd-7536-71de-b4d8-bad56da41356" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a08bfd-7536-71de-b4d8-bad56da41356_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a08bfd-7536-71de-b4d8-bad56da41356" xlink:to="loc_srt_RangeMember_01a08bfd-7536-71de-b4d8-bad56da41356_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a08bfd-7536-7852-a423-f743b8a4ea0b" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a08bfd-7536-71de-b4d8-bad56da41356" xlink:to="loc_srt_RangeMember_01a08bfd-7536-7852-a423-f743b8a4ea0b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a08bfd-7536-72e9-a4cc-f86228023571" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a08bfd-7536-7852-a423-f743b8a4ea0b" xlink:to="loc_srt_MaximumMember_01a08bfd-7536-72e9-a4cc-f86228023571" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductOrServiceAxis_01a08bfd-7536-7076-9d18-6d3eca4249a2" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductOrServiceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_01a08bfd-7536-7715-81bf-66fd4d33f932" xlink:to="loc_srt_ProductOrServiceAxis_01a08bfd-7536-7076-9d18-6d3eca4249a2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_01a08bfd-7536-7076-9d18-6d3eca4249a2_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_ProductOrServiceAxis_01a08bfd-7536-7076-9d18-6d3eca4249a2" xlink:to="loc_srt_ProductsAndServicesDomain_01a08bfd-7536-7076-9d18-6d3eca4249a2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_ProductsAndServicesDomain_01a08bfd-7536-70d7-898d-9b0056dad9f5" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_ProductsAndServicesDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_ProductOrServiceAxis_01a08bfd-7536-7076-9d18-6d3eca4249a2" xlink:to="loc_srt_ProductsAndServicesDomain_01a08bfd-7536-70d7-898d-9b0056dad9f5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_ImplementationServicesAndOtherMember_01a08bfd-7536-7735-98d1-0b7ba9475264" xlink:href="pcty-20260930.xsd#pcty_ImplementationServicesAndOtherMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_ProductsAndServicesDomain_01a08bfd-7536-70d7-898d-9b0056dad9f5" xlink:to="loc_pcty_ImplementationServicesAndOtherMember_01a08bfd-7536-7735-98d1-0b7ba9475264" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_AmortizationPeriodForNonRefundableImplementationFees_01a08bfd-7536-7e2d-b706-acae8e70856c" xlink:href="pcty-20260930.xsd#pcty_AmortizationPeriodForNonRefundableImplementationFees"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a08bfd-7536-77d1-beaa-7868ccb9e623" xlink:to="loc_pcty_AmortizationPeriodForNonRefundableImplementationFees_01a08bfd-7536-7e2d-b706-acae8e70856c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ChangeInContractWithCustomerLiabilityAbstract_01a08bfd-7536-7175-84cd-240261ecdd58" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ChangeInContractWithCustomerLiabilityAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a08bfd-7536-77d1-beaa-7868ccb9e623" xlink:to="loc_us-gaap_ChangeInContractWithCustomerLiabilityAbstract_01a08bfd-7536-7175-84cd-240261ecdd58" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiability_01a08bfd-7536-7e05-8636-c4cc0bbe00f9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ChangeInContractWithCustomerLiabilityAbstract_01a08bfd-7536-7175-84cd-240261ecdd58" xlink:to="loc_us-gaap_ContractWithCustomerLiability_01a08bfd-7536-7e05-8636-c4cc0bbe00f9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_01a08bfd-7536-7a25-ae97-5c18b49b9c1d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInContractWithCustomerLiability"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ChangeInContractWithCustomerLiabilityAbstract_01a08bfd-7536-7175-84cd-240261ecdd58" xlink:to="loc_us-gaap_IncreaseDecreaseInContractWithCustomerLiability_01a08bfd-7536-7a25-ae97-5c18b49b9c1d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_01a08bfd-7536-748b-a337-05eb90ac6c30" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ChangeInContractWithCustomerLiabilityAbstract_01a08bfd-7536-7175-84cd-240261ecdd58" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityRevenueRecognized_01a08bfd-7536-748b-a337-05eb90ac6c30" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiability_01a08bfd-7536-714d-b77c-6f80aa3303f9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerLiability"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_ContractWithCustomerRevenueDeferredToBeRecognizedRemainderOfFiscalYear_01a08bfd-7536-7841-873b-b0f15d0eb94d" xlink:href="pcty-20260930.xsd#pcty_ContractWithCustomerRevenueDeferredToBeRecognizedRemainderOfFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a08bfd-7536-77d1-beaa-7868ccb9e623" xlink:to="loc_pcty_ContractWithCustomerRevenueDeferredToBeRecognizedRemainderOfFiscalYear_01a08bfd-7536-7841-873b-b0f15d0eb94d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_ContractWithCustomerRevenueDeferredToBeRecognizedInNextTwelveMonths_01a08bfd-7536-705e-8d60-60041656ee0a" xlink:href="pcty-20260930.xsd#pcty_ContractWithCustomerRevenueDeferredToBeRecognizedInNextTwelveMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a08bfd-7536-77d1-beaa-7868ccb9e623" xlink:to="loc_pcty_ContractWithCustomerRevenueDeferredToBeRecognizedInNextTwelveMonths_01a08bfd-7536-705e-8d60-60041656ee0a" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_ContractWithCustomerRevenueDeferredToBeRecognizedInYearTwoAndThereafter_01a08bfd-7536-799e-87a2-6fb8c999973a" xlink:href="pcty-20260930.xsd#pcty_ContractWithCustomerRevenueDeferredToBeRecognizedInYearTwoAndThereafter"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a08bfd-7536-77d1-beaa-7868ccb9e623" xlink:to="loc_pcty_ContractWithCustomerRevenueDeferredToBeRecognizedInYearTwoAndThereafter_01a08bfd-7536-799e-87a2-6fb8c999973a" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/RevenueDeferredContractCostsDetails" xlink:type="simple" xlink:href="pcty-20260930.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_01a08bfd-7536-7bfb-84d6-8b3c9064a02e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_01a08bfd-7536-7f6f-a240-a7ba35b6cd49" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a08bfd-7536-7bfb-84d6-8b3c9064a02e" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_01a08bfd-7536-7f6f-a240-a7ba35b6cd49" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedContractCostAxis_01a08bfd-7536-7d81-a9d9-83ad33f4ac0c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CapitalizedContractCostAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_01a08bfd-7536-7f6f-a240-a7ba35b6cd49" xlink:to="loc_us-gaap_CapitalizedContractCostAxis_01a08bfd-7536-7d81-a9d9-83ad33f4ac0c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedContractCostDomain_01a08bfd-7536-7d81-a9d9-83ad33f4ac0c_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CapitalizedContractCostDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CapitalizedContractCostAxis_01a08bfd-7536-7d81-a9d9-83ad33f4ac0c" xlink:to="loc_us-gaap_CapitalizedContractCostDomain_01a08bfd-7536-7d81-a9d9-83ad33f4ac0c_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedContractCostDomain_01a159ef-f677-7a02-b848-ddcd3672d8d9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CapitalizedContractCostDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CapitalizedContractCostAxis_01a08bfd-7536-7d81-a9d9-83ad33f4ac0c" xlink:to="loc_us-gaap_CapitalizedContractCostDomain_01a159ef-f677-7a02-b848-ddcd3672d8d9" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_CostsToObtainANewContractMember_01a159ef-f677-720d-89f4-6d5a4037e04a" xlink:href="pcty-20260930.xsd#pcty_CostsToObtainANewContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CapitalizedContractCostDomain_01a159ef-f677-7a02-b848-ddcd3672d8d9" xlink:to="loc_pcty_CostsToObtainANewContractMember_01a159ef-f677-720d-89f4-6d5a4037e04a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_CostsToFulfillAContractMember_01a159f0-90b4-76b5-8f6b-db6d45a211e6" xlink:href="pcty-20260930.xsd#pcty_CostsToFulfillAContractMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CapitalizedContractCostDomain_01a159ef-f677-7a02-b848-ddcd3672d8d9" xlink:to="loc_pcty_CostsToFulfillAContractMember_01a159f0-90b4-76b5-8f6b-db6d45a211e6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedContractCostNetAbstract_01a08bfd-7536-7884-8973-a1958f0b08a9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CapitalizedContractCostNetAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a08bfd-7536-7bfb-84d6-8b3c9064a02e" xlink:to="loc_us-gaap_CapitalizedContractCostNetAbstract_01a08bfd-7536-7884-8973-a1958f0b08a9" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedContractCostAmortizationPeriod_01a08bfd-7536-713e-80fe-246854a99dc0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CapitalizedContractCostAmortizationPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CapitalizedContractCostNetAbstract_01a08bfd-7536-7884-8973-a1958f0b08a9" xlink:to="loc_us-gaap_CapitalizedContractCostAmortizationPeriod_01a08bfd-7536-713e-80fe-246854a99dc0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedContractCostNet_01a1606f-87fe-78d7-94db-cd2a5960d7f5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CapitalizedContractCostNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CapitalizedContractCostNetAbstract_01a08bfd-7536-7884-8973-a1958f0b08a9" xlink:to="loc_us-gaap_CapitalizedContractCostNet_01a1606f-87fe-78d7-94db-cd2a5960d7f5" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_CapitalizedContractCostAdditions_01a08bfd-7536-789a-9fa8-853cebcba9a0" xlink:href="pcty-20260930.xsd#pcty_CapitalizedContractCostAdditions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CapitalizedContractCostNetAbstract_01a08bfd-7536-7884-8973-a1958f0b08a9" xlink:to="loc_pcty_CapitalizedContractCostAdditions_01a08bfd-7536-789a-9fa8-853cebcba9a0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedContractCostAmortization_01a15a00-99df-7f90-b6db-5eed1fd8063c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CapitalizedContractCostAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CapitalizedContractCostNetAbstract_01a08bfd-7536-7884-8973-a1958f0b08a9" xlink:to="loc_us-gaap_CapitalizedContractCostAmortization_01a15a00-99df-7f90-b6db-5eed1fd8063c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CapitalizedContractCostNet_01a08bfd-7536-7b24-962d-3b942ab73265" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CapitalizedContractCostNet"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/RevenueRemainingPerformanceObligationsDetails" xlink:type="simple" xlink:href="pcty-20260930.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_01a08bfd-7536-7982-8c89-bdd514cb0312" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_01a08bfd-7536-7deb-aa21-557150b2db48" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a08bfd-7536-7982-8c89-bdd514cb0312" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_01a08bfd-7536-7deb-aa21-557150b2db48" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_01a08bfd-7536-7eda-9457-b057ffa401bc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DisaggregationOfRevenueTable_01a08bfd-7536-7deb-aa21-557150b2db48" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis_01a08bfd-7536-7eda-9457-b057ffa401bc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuePracticalExpedientAbstract_01a08bfd-7536-7015-99d2-86140a2a1089" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenuePracticalExpedientAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a08bfd-7536-7982-8c89-bdd514cb0312" xlink:to="loc_us-gaap_RevenuePracticalExpedientAbstract_01a08bfd-7536-7015-99d2-86140a2a1089" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_01a08bfd-7536-7282-9560-bf0c6048252f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuePracticalExpedientAbstract_01a08bfd-7536-7015-99d2-86140a2a1089" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_01a08bfd-7536-7282-9560-bf0c6048252f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_01a08bfd-7536-79c0-b98f-9226bf6963db" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuePracticalExpedientAbstract_01a08bfd-7536-7015-99d2-86140a2a1089" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_01a08bfd-7536-79c0-b98f-9226bf6963db" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/RevenueRemainingPerformanceObligationsDetails_1" xlink:type="simple" xlink:href="pcty-20260930.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_01a08bfd-7536-7982-8c89-bdd514cb0312" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DisaggregationOfRevenueTable_01a08bfd-7536-7deb-aa21-557150b2db48" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DisaggregationOfRevenueTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a08bfd-7536-7982-8c89-bdd514cb0312" xlink:to="loc_us-gaap_DisaggregationOfRevenueTable_01a08bfd-7536-7deb-aa21-557150b2db48" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenuePracticalExpedientAbstract_01a08bfd-7536-7015-99d2-86140a2a1089" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenuePracticalExpedientAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DisaggregationOfRevenueLineItems_01a08bfd-7536-7982-8c89-bdd514cb0312" xlink:to="loc_us-gaap_RevenuePracticalExpedientAbstract_01a08bfd-7536-7015-99d2-86140a2a1089" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligation_01a08bfd-7536-7282-9560-bf0c6048252f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuePracticalExpedientAbstract_01a08bfd-7536-7015-99d2-86140a2a1089" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligation_01a08bfd-7536-7282-9560-bf0c6048252f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_01a08bfd-7536-79c0-b98f-9226bf6963db" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RevenuePracticalExpedientAbstract_01a08bfd-7536-7015-99d2-86140a2a1089" xlink:to="loc_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1_01a08bfd-7536-79c0-b98f-9226bf6963db" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/BusinessCombinationsDetails" xlink:type="simple" xlink:href="pcty-20260930.xsd#BusinessCombinationsDetails"/>
  <link:definitionLink xlink:role="http://www.paylocity.com/role/BusinessCombinationsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_01a1644f-0e3b-756a-8503-3fec6de94e81" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a1644c-855b-76d0-abf5-8467b72dd259" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a1644f-0e3b-756a-8503-3fec6de94e81" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a1644c-855b-76d0-abf5-8467b72dd259" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_01a16450-6222-739b-89f4-f6d38797e7dc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a1644c-855b-76d0-abf5-8467b72dd259" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_01a16450-6222-739b-89f4-f6d38797e7dc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a16450-6222-739b-89f4-f6d38797e7dc_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_01a16450-6222-739b-89f4-f6d38797e7dc" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a16450-6222-739b-89f4-f6d38797e7dc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a16459-69cd-7104-bed2-4c22902b760c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_01a16450-6222-739b-89f4-f6d38797e7dc" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a16459-69cd-7104-bed2-4c22902b760c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_01a1645e-4dc2-70f7-826c-8fc49fea0f12" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CustomerRelationshipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a16459-69cd-7104-bed2-4c22902b760c" xlink:to="loc_us-gaap_CustomerRelationshipsMember_01a1645e-4dc2-70f7-826c-8fc49fea0f12" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DevelopedTechnologyRightsMember_01a1645e-f913-7167-a620-caee228eee86" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DevelopedTechnologyRightsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a16459-69cd-7104-bed2-4c22902b760c" xlink:to="loc_us-gaap_DevelopedTechnologyRightsMember_01a1645e-f913-7167-a620-caee228eee86" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_01a1644d-4102-7e98-bbe7-cbbc4322f782" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_01a1644c-855b-76d0-abf5-8467b72dd259" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_01a1644d-4102-7e98-bbe7-cbbc4322f782" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a1644d-4102-7e98-bbe7-cbbc4322f782_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a1644d-4102-7e98-bbe7-cbbc4322f782" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a1644d-4102-7e98-bbe7-cbbc4322f782_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a1644d-8f4c-7dd6-94c6-fe3ac1c7cf31" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessAcquisitionAcquireeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_01a1644d-4102-7e98-bbe7-cbbc4322f782" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a1644d-8f4c-7dd6-94c6-fe3ac1c7cf31" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_GrayscaleLabsInc.Member_01a1644d-f751-7da3-89f2-4dda30c59b66" xlink:href="pcty-20260930.xsd#pcty_GrayscaleLabsInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a1644d-8f4c-7dd6-94c6-fe3ac1c7cf31" xlink:to="loc_pcty_GrayscaleLabsInc.Member_01a1644d-f751-7da3-89f2-4dda30c59b66" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_AidoraInc.Member_01a1644f-0e3b-767b-a762-942fc48d06c8" xlink:href="pcty-20260930.xsd#pcty_AidoraInc.Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_01a1644d-8f4c-7dd6-94c6-fe3ac1c7cf31" xlink:to="loc_pcty_AidoraInc.Member_01a1644f-0e3b-767b-a762-942fc48d06c8" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_01a16465-4a2c-79cc-b632-7febe0b9ae3b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationConsiderationTransferred1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a1644f-0e3b-756a-8503-3fec6de94e81" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_01a16465-4a2c-79cc-b632-7febe0b9ae3b" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_01a1644f-83e2-7877-bf82-9cb24b026052" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a1644f-0e3b-756a-8503-3fec6de94e81" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_01a1644f-83e2-7877-bf82-9cb24b026052" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_01a16450-6b1e-7313-be06-7f9a519931ae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_01a1644f-0e3b-756a-8503-3fec6de94e81" xlink:to="loc_us-gaap_Goodwill_01a16450-6b1e-7313-be06-7f9a519931ae" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/BalanceSheetInformationPropertyPlantandEquipmentDetails" xlink:type="simple" xlink:href="pcty-20260930.xsd#BalanceSheetInformationPropertyPlantandEquipmentDetails"/>
  <link:definitionLink xlink:role="http://www.paylocity.com/role/BalanceSheetInformationPropertyPlantandEquipmentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a1665e-acb7-73cd-9a7b-d0e4c159e7e8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_01a1662d-b932-752d-8363-a91bfe17f8c5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a1665e-acb7-73cd-9a7b-d0e4c159e7e8" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_01a1662d-b932-752d-8363-a91bfe17f8c5" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_01a1662d-b932-76bc-881b-b5bd63f4bc20" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_01a1662d-b932-752d-8363-a91bfe17f8c5" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_01a1662d-b932-76bc-881b-b5bd63f4bc20" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a1662d-b932-76bc-881b-b5bd63f4bc20_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_01a1662d-b932-76bc-881b-b5bd63f4bc20" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a1662d-b932-76bc-881b-b5bd63f4bc20_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a1662d-b932-77a0-87e0-cd883cf3737a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_01a1662d-b932-76bc-881b-b5bd63f4bc20" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a1662d-b932-77a0-87e0-cd883cf3737a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OfficeEquipmentMember_01a1662d-b932-74d5-8468-93d76c18b923" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OfficeEquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a1662d-b932-77a0-87e0-cd883cf3737a" xlink:to="loc_us-gaap_OfficeEquipmentMember_01a1662d-b932-74d5-8468-93d76c18b923" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComputerEquipmentMember_01a1662d-b932-78ee-a2b0-404e8f7ca22b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ComputerEquipmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a1662d-b932-77a0-87e0-cd883cf3737a" xlink:to="loc_us-gaap_ComputerEquipmentMember_01a1662d-b932-78ee-a2b0-404e8f7ca22b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FurnitureAndFixturesMember_01a1662d-b932-771b-9d83-0b65cda1c45b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FurnitureAndFixturesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a1662d-b932-77a0-87e0-cd883cf3737a" xlink:to="loc_us-gaap_FurnitureAndFixturesMember_01a1662d-b932-771b-9d83-0b65cda1c45b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SoftwareAndSoftwareDevelopmentCostsMember_01a1662d-b932-755a-966f-7ea4d42fe23f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SoftwareAndSoftwareDevelopmentCostsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a1662d-b932-77a0-87e0-cd883cf3737a" xlink:to="loc_us-gaap_SoftwareAndSoftwareDevelopmentCostsMember_01a1662d-b932-755a-966f-7ea4d42fe23f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseholdImprovementsMember_01a1662d-b932-7d74-8b28-108d6b9b1065" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LeaseholdImprovementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a1662d-b932-77a0-87e0-cd883cf3737a" xlink:to="loc_us-gaap_LeaseholdImprovementsMember_01a1662d-b932-7d74-8b28-108d6b9b1065" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_TimeClocksRentedByClientsMember_01a1662d-b932-716d-aeca-dca7b60baa12" xlink:href="pcty-20260930.xsd#pcty_TimeClocksRentedByClientsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_01a1662d-b932-77a0-87e0-cd883cf3737a" xlink:to="loc_pcty_TimeClocksRentedByClientsMember_01a1662d-b932-716d-aeca-dca7b60baa12" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_01a1664d-538c-7ae4-8509-6932cacec5d7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a1665e-acb7-73cd-9a7b-d0e4c159e7e8" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_01a1664d-538c-7ae4-8509-6932cacec5d7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_01a1664e-3f30-79ec-b5ae-e6452fcb3ca3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a1665e-acb7-73cd-9a7b-d0e4c159e7e8" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_01a1664e-3f30-79ec-b5ae-e6452fcb3ca3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_01a1664e-e41d-7542-99c7-8fa3c3f2ed3d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a1665e-acb7-73cd-9a7b-d0e4c159e7e8" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_01a1664e-e41d-7542-99c7-8fa3c3f2ed3d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_01a1662d-b932-7f7f-8028-52fcb7146cb9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Depreciation"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_01a1665e-acb7-73cd-9a7b-d0e4c159e7e8" xlink:to="loc_us-gaap_Depreciation_01a1662d-b932-7f7f-8028-52fcb7146cb9" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/BalanceSheetInformationGoodwillandIntangibleAssetsDetails" xlink:type="simple" xlink:href="pcty-20260930.xsd#BalanceSheetInformationGoodwillandIntangibleAssetsDetails"/>
  <link:definitionLink xlink:role="http://www.paylocity.com/role/BalanceSheetInformationGoodwillandIntangibleAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_01a08bfd-7536-7508-bc11-0c3f02474cef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_01a08bfd-7536-798c-85ab-33c5d4f8adce" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_01a08bfd-7536-7508-bc11-0c3f02474cef" xlink:to="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_01a08bfd-7536-798c-85ab-33c5d4f8adce" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_01a08bfd-7536-7180-9a7d-a49b192b7c4a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_01a08bfd-7536-798c-85ab-33c5d4f8adce" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_01a08bfd-7536-7180-9a7d-a49b192b7c4a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a08bfd-7536-7180-9a7d-a49b192b7c4a_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_01a08bfd-7536-7180-9a7d-a49b192b7c4a" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a08bfd-7536-7180-9a7d-a49b192b7c4a_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a08bfd-7536-7cc8-b6b5-d22e76f44fa0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_01a08bfd-7536-7180-9a7d-a49b192b7c4a" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a08bfd-7536-7cc8-b6b5-d22e76f44fa0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_ProprietaryTechnologyMember_01a08bfd-7536-70be-965a-4550d142b1c6" xlink:href="pcty-20260930.xsd#pcty_ProprietaryTechnologyMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a08bfd-7536-7cc8-b6b5-d22e76f44fa0" xlink:to="loc_pcty_ProprietaryTechnologyMember_01a08bfd-7536-70be-965a-4550d142b1c6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CustomerRelationshipsMember_01a08bfd-7536-7ea1-8792-9a66d9549fcc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CustomerRelationshipsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a08bfd-7536-7cc8-b6b5-d22e76f44fa0" xlink:to="loc_us-gaap_CustomerRelationshipsMember_01a08bfd-7536-7ea1-8792-9a66d9549fcc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncompeteAgreementsMember_01a08bfd-7536-7664-8fd3-e09e53b4f373" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NoncompeteAgreementsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a08bfd-7536-7cc8-b6b5-d22e76f44fa0" xlink:to="loc_us-gaap_NoncompeteAgreementsMember_01a08bfd-7536-7664-8fd3-e09e53b4f373" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradeNamesMember_01a08bfd-7536-7d71-a507-e06ae34a9be3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TradeNamesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_01a08bfd-7536-7cc8-b6b5-d22e76f44fa0" xlink:to="loc_us-gaap_TradeNamesMember_01a08bfd-7536-7d71-a507-e06ae34a9be3" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillRollForward_01a08bfd-7536-7832-9516-9d4afabccd07" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_01a08bfd-7536-7508-bc11-0c3f02474cef" xlink:to="loc_us-gaap_GoodwillRollForward_01a08bfd-7536-7832-9516-9d4afabccd07" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_01a08bfd-7536-7d47-8da9-0d7002d8cbe2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_01a08bfd-7536-7832-9516-9d4afabccd07" xlink:to="loc_us-gaap_Goodwill_01a08bfd-7536-7d47-8da9-0d7002d8cbe2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillAcquiredDuringPeriod_01a159dd-592b-7f1f-b458-ece6a659b004" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillAcquiredDuringPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_01a08bfd-7536-7832-9516-9d4afabccd07" xlink:to="loc_us-gaap_GoodwillAcquiredDuringPeriod_01a159dd-592b-7f1f-b458-ece6a659b004" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_01a08bfd-7536-7e38-be9a-dd2850152799" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GoodwillPurchaseAccountingAdjustments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_01a08bfd-7536-7832-9516-9d4afabccd07" xlink:to="loc_us-gaap_GoodwillPurchaseAccountingAdjustments_01a08bfd-7536-7e38-be9a-dd2850152799" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_01a08bfd-7536-7770-b9f6-dd649cef134d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_01a08bfd-7536-7d37-b310-5fef7d3745bd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsNetAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_01a08bfd-7536-7508-bc11-0c3f02474cef" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_01a08bfd-7536-7d37-b310-5fef7d3745bd" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_01a08bfd-7536-787f-8a24-efc946adcd33" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_01a08bfd-7536-7d37-b310-5fef7d3745bd" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_01a08bfd-7536-787f-8a24-efc946adcd33" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_01a08bfd-7536-7b26-a34b-9862b841a76c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_01a08bfd-7536-7d37-b310-5fef7d3745bd" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_01a08bfd-7536-7b26-a34b-9862b841a76c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_01a08bfd-7536-783d-9e10-e3a509cc8ff6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_01a08bfd-7536-7d37-b310-5fef7d3745bd" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_01a08bfd-7536-783d-9e10-e3a509cc8ff6" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_01a08bfd-7536-7369-94b3-ebeff9964be5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_01a08bfd-7536-7d37-b310-5fef7d3745bd" xlink:to="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_01a08bfd-7536-7369-94b3-ebeff9964be5" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_01a08bfd-7536-7ff1-9cdb-11a9b1ccae13" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNetAbstract_01a08bfd-7536-7d37-b310-5fef7d3745bd" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_01a08bfd-7536-7ff1-9cdb-11a9b1ccae13" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_01a08bfd-7536-7944-beea-a016b40b413d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_01a08bfd-7536-7508-bc11-0c3f02474cef" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_01a08bfd-7536-7944-beea-a016b40b413d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_01a08bfd-7536-7901-ad79-a0e17a381127" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_01a08bfd-7536-7944-beea-a016b40b413d" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_01a08bfd-7536-7901-ad79-a0e17a381127" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_01a08bfd-7536-7e31-8db4-3bc89b6ade68" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_01a08bfd-7536-7944-beea-a016b40b413d" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_01a08bfd-7536-7e31-8db4-3bc89b6ade68" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_01a08bfd-7536-75ad-917c-2bb1804fdba1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_01a08bfd-7536-7944-beea-a016b40b413d" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_01a08bfd-7536-75ad-917c-2bb1804fdba1" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_01a08bfd-7536-76a1-b111-60a22f7e14f7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_01a08bfd-7536-7944-beea-a016b40b413d" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_01a08bfd-7536-76a1-b111-60a22f7e14f7" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_01a08bfd-7536-70aa-9ad0-15ebdd32c22c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_01a08bfd-7536-7944-beea-a016b40b413d" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_01a08bfd-7536-70aa-9ad0-15ebdd32c22c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour_01a08bfd-7536-7f7e-a587-2ea87aa2e284" xlink:href="pcty-20260930.xsd#pcty_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsFutureAmortizationExpenseAbstract_01a08bfd-7536-7944-beea-a016b40b413d" xlink:to="loc_pcty_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour_01a08bfd-7536-7f7e-a587-2ea87aa2e284" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_01a08bfd-7536-7c58-b21f-a7856a26e95c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/CashandCashEquivalentsandFundsHeldForClientsReconciliationDetails" xlink:type="simple" xlink:href="pcty-20260930.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_01a08bfd-7536-776a-ad47-bf14dc6cd880" xlink:href="pcty-20260930.xsd#pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_ScheduleOfFundsHeldForClientsAndCorporateInvestmentsTable_01a08bfd-7536-733c-90f0-78d2945a76c4" xlink:href="pcty-20260930.xsd#pcty_ScheduleOfFundsHeldForClientsAndCorporateInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_01a08bfd-7536-776a-ad47-bf14dc6cd880" xlink:to="loc_pcty_ScheduleOfFundsHeldForClientsAndCorporateInvestmentsTable_01a08bfd-7536-733c-90f0-78d2945a76c4" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_01a08bfd-7536-782d-8828-ade92a55788e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_pcty_ScheduleOfFundsHeldForClientsAndCorporateInvestmentsTable_01a08bfd-7536-733c-90f0-78d2945a76c4" xlink:to="loc_us-gaap_FinancialInstrumentAxis_01a08bfd-7536-782d-8828-ade92a55788e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a08bfd-7536-782d-8828-ade92a55788e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a08bfd-7536-782d-8828-ade92a55788e" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a08bfd-7536-782d-8828-ade92a55788e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a08bfd-7536-7971-93c5-256702a46bc3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a08bfd-7536-782d-8828-ade92a55788e" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a08bfd-7536-7971-93c5-256702a46bc3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_01a08bfd-7536-71b8-b676-c88a93020820" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a08bfd-7536-7971-93c5-256702a46bc3" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_01a08bfd-7536-71b8-b676-c88a93020820" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_01a08bfd-7536-7a50-9cad-776decf8f46b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a08bfd-7536-7971-93c5-256702a46bc3" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_01a08bfd-7536-7a50-9cad-776decf8f46b" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasurySecuritiesMember_01a08bfd-7536-7e7f-bbb2-de2a37bf8b14" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USTreasurySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a08bfd-7536-7971-93c5-256702a46bc3" xlink:to="loc_us-gaap_USTreasurySecuritiesMember_01a08bfd-7536-7e7f-bbb2-de2a37bf8b14" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherDebtSecuritiesMember_01a08bfd-7536-7321-b2e6-0c09b78c68a9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a08bfd-7536-7971-93c5-256702a46bc3" xlink:to="loc_us-gaap_OtherDebtSecuritiesMember_01a08bfd-7536-7321-b2e6-0c09b78c68a9" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_CashAndCashEquivalentsAmortizedCost_01a08bfd-7536-7f91-9f8a-e5a4ac9369e0" xlink:href="pcty-20260930.xsd#pcty_CashAndCashEquivalentsAmortizedCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_01a08bfd-7536-776a-ad47-bf14dc6cd880" xlink:to="loc_pcty_CashAndCashEquivalentsAmortizedCost_01a08bfd-7536-7f91-9f8a-e5a4ac9369e0" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_CashAndCashEquivalentsAccumulatedGrossUnrealizedGainBeforeTax_01a08bfd-7536-744f-9e7a-1de977f396ad" xlink:href="pcty-20260930.xsd#pcty_CashAndCashEquivalentsAccumulatedGrossUnrealizedGainBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_01a08bfd-7536-776a-ad47-bf14dc6cd880" xlink:to="loc_pcty_CashAndCashEquivalentsAccumulatedGrossUnrealizedGainBeforeTax_01a08bfd-7536-744f-9e7a-1de977f396ad" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_CashAndCashEquivalentsAccumulatedGrossUnrealizedLossBeforeTax_01a08bfd-7536-782b-a286-e1950b71018c" xlink:href="pcty-20260930.xsd#pcty_CashAndCashEquivalentsAccumulatedGrossUnrealizedLossBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_01a08bfd-7536-776a-ad47-bf14dc6cd880" xlink:to="loc_pcty_CashAndCashEquivalentsAccumulatedGrossUnrealizedLossBeforeTax_01a08bfd-7536-782b-a286-e1950b71018c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_01a08bfd-7536-729c-a362-43a90bb72c38" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_01a08bfd-7536-776a-ad47-bf14dc6cd880" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_01a08bfd-7536-729c-a362-43a90bb72c38" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_FundsHeldForClientsCashAndCashEquivalentsAmortizedCost_01a08bfd-7536-7a1c-80e3-b0bf23d32b50" xlink:href="pcty-20260930.xsd#pcty_FundsHeldForClientsCashAndCashEquivalentsAmortizedCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_01a08bfd-7536-776a-ad47-bf14dc6cd880" xlink:to="loc_pcty_FundsHeldForClientsCashAndCashEquivalentsAmortizedCost_01a08bfd-7536-7a1c-80e3-b0bf23d32b50" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_FundsHeldForClientsCashAndCashEquivalentsAccumulatedGrossUnrealizedGainBeforeTax_01a08bfd-7536-7574-a02e-a84c7b1b5e55" xlink:href="pcty-20260930.xsd#pcty_FundsHeldForClientsCashAndCashEquivalentsAccumulatedGrossUnrealizedGainBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_01a08bfd-7536-776a-ad47-bf14dc6cd880" xlink:to="loc_pcty_FundsHeldForClientsCashAndCashEquivalentsAccumulatedGrossUnrealizedGainBeforeTax_01a08bfd-7536-7574-a02e-a84c7b1b5e55" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_FundsHeldForClientsCashAndCashEquivalentsAccumulatedGrossUnrealizedLossBeforeTax_01a08bfd-7536-787c-ad53-e2e1c9f6f59e" xlink:href="pcty-20260930.xsd#pcty_FundsHeldForClientsCashAndCashEquivalentsAccumulatedGrossUnrealizedLossBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_01a08bfd-7536-776a-ad47-bf14dc6cd880" xlink:to="loc_pcty_FundsHeldForClientsCashAndCashEquivalentsAccumulatedGrossUnrealizedLossBeforeTax_01a08bfd-7536-787c-ad53-e2e1c9f6f59e" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_FundsHeldForClientsCashAndCashEquivalentsAtCarryingValue_01a08bfd-7536-767d-93f4-c0cc21022d31" xlink:href="pcty-20260930.xsd#pcty_FundsHeldForClientsCashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_01a08bfd-7536-776a-ad47-bf14dc6cd880" xlink:to="loc_pcty_FundsHeldForClientsCashAndCashEquivalentsAtCarryingValue_01a08bfd-7536-767d-93f4-c0cc21022d31" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_01a08bfd-7536-7864-8273-c16beb6a2c2e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_01a08bfd-7536-776a-ad47-bf14dc6cd880" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_01a08bfd-7536-7864-8273-c16beb6a2c2e" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_01a08bfd-7536-7fff-ba8a-45a51243f234" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_01a08bfd-7536-7864-8273-c16beb6a2c2e" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_01a08bfd-7536-7fff-ba8a-45a51243f234" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_01a08bfd-7536-7504-a5a4-80b6d6f25a90" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_01a08bfd-7536-7864-8273-c16beb6a2c2e" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_01a08bfd-7536-7504-a5a4-80b6d6f25a90" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_01a08bfd-7536-7177-ad80-9f0f57736e51" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_01a08bfd-7536-7864-8273-c16beb6a2c2e" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_01a08bfd-7536-7177-ad80-9f0f57736e51" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_01a08bfd-7536-7d03-9f81-dc09373fa811" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_01a08bfd-7536-7864-8273-c16beb6a2c2e" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_01a08bfd-7536-7d03-9f81-dc09373fa811" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_InvestmentsAmortizedCost_01a08bfd-7536-7d66-9d87-f822965fa81f" xlink:href="pcty-20260930.xsd#pcty_InvestmentsAmortizedCost"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_01a08bfd-7536-7864-8273-c16beb6a2c2e" xlink:to="loc_pcty_InvestmentsAmortizedCost_01a08bfd-7536-7d66-9d87-f822965fa81f" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_InvestmentsAccumulatedGrossUnrealizedGainBeforeTax_01a08bfd-7536-7fad-8c61-c2198b90601a" xlink:href="pcty-20260930.xsd#pcty_InvestmentsAccumulatedGrossUnrealizedGainBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_01a08bfd-7536-7864-8273-c16beb6a2c2e" xlink:to="loc_pcty_InvestmentsAccumulatedGrossUnrealizedGainBeforeTax_01a08bfd-7536-7fad-8c61-c2198b90601a" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_InvestmentsAccumulatedGrossUnrealizedLossBeforeTax_01a08bfd-7536-7795-bcfc-3951fdeb864f" xlink:href="pcty-20260930.xsd#pcty_InvestmentsAccumulatedGrossUnrealizedLossBeforeTax"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_01a08bfd-7536-7864-8273-c16beb6a2c2e" xlink:to="loc_pcty_InvestmentsAccumulatedGrossUnrealizedLossBeforeTax_01a08bfd-7536-7795-bcfc-3951fdeb864f" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Investments_01a08bfd-7536-7aec-98ae-cf4170462bb5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Investments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesFairValueToAmortizedCostBasisAbstract_01a08bfd-7536-7864-8273-c16beb6a2c2e" xlink:to="loc_us-gaap_Investments_01a08bfd-7536-7aec-98ae-cf4170462bb5" xlink:type="arc" order="8"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/CashandCashEquivalentsandFundsHeldForClientsClassificationDetails" xlink:type="simple" xlink:href="pcty-20260930.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_01a08bfd-7536-778c-b1dd-b901f5a8afbc" xlink:href="pcty-20260930.xsd#pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_ScheduleOfFundsHeldForClientsAndCorporateInvestmentsTable_01a08bfd-7536-7788-98cb-3424ab3342ad" xlink:href="pcty-20260930.xsd#pcty_ScheduleOfFundsHeldForClientsAndCorporateInvestmentsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_01a08bfd-7536-778c-b1dd-b901f5a8afbc" xlink:to="loc_pcty_ScheduleOfFundsHeldForClientsAndCorporateInvestmentsTable_01a08bfd-7536-7788-98cb-3424ab3342ad" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_01a08bfd-7536-7d1d-a6ca-a73f74f8e26e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_pcty_ScheduleOfFundsHeldForClientsAndCorporateInvestmentsTable_01a08bfd-7536-7788-98cb-3424ab3342ad" xlink:to="loc_us-gaap_FinancialInstrumentAxis_01a08bfd-7536-7d1d-a6ca-a73f74f8e26e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a08bfd-7536-7d1d-a6ca-a73f74f8e26e_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a08bfd-7536-7d1d-a6ca-a73f74f8e26e" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a08bfd-7536-7d1d-a6ca-a73f74f8e26e_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a08bfd-7536-7947-834f-61312c7ff57f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a08bfd-7536-7d1d-a6ca-a73f74f8e26e" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a08bfd-7536-7947-834f-61312c7ff57f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_01a08bfd-7536-70b3-9ff1-3832fbce9d84" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a08bfd-7536-7947-834f-61312c7ff57f" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_01a08bfd-7536-70b3-9ff1-3832fbce9d84" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_01a08bfd-7536-7e13-8c26-fe33cbd522eb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a08bfd-7536-7947-834f-61312c7ff57f" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_01a08bfd-7536-7e13-8c26-fe33cbd522eb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasurySecuritiesMember_01a08bfd-7536-7e8e-b7dc-175bf0698042" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USTreasurySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a08bfd-7536-7947-834f-61312c7ff57f" xlink:to="loc_us-gaap_USTreasurySecuritiesMember_01a08bfd-7536-7e8e-b7dc-175bf0698042" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherDebtSecuritiesMember_01a08bfd-7536-75b1-8de4-27d85cd7c5f4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a08bfd-7536-7947-834f-61312c7ff57f" xlink:to="loc_us-gaap_OtherDebtSecuritiesMember_01a08bfd-7536-75b1-8de4-27d85cd7c5f4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_01a08bfd-7536-7c3c-9006-e25ac2af2bdc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_01a08bfd-7536-778c-b1dd-b901f5a8afbc" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_01a08bfd-7536-7c3c-9006-e25ac2af2bdc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FundsHeldForClients_01a08bfd-7536-7476-b2d7-698f57190ec7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FundsHeldForClients"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_01a08bfd-7536-778c-b1dd-b901f5a8afbc" xlink:to="loc_us-gaap_FundsHeldForClients_01a08bfd-7536-7476-b2d7-698f57190ec7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Investments_01a08bfd-7536-7a4c-bbc5-acfd923abe84" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Investments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_01a08bfd-7536-778c-b1dd-b901f5a8afbc" xlink:to="loc_us-gaap_Investments_01a08bfd-7536-7a4c-bbc5-acfd923abe84" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_01a08bfd-7536-70cd-8371-494afe205fe5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_01a08bfd-7536-778c-b1dd-b901f5a8afbc" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_01a08bfd-7536-70cd-8371-494afe205fe5" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_01a08bfd-7536-714f-93fe-e1872c1cfec4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_01a08bfd-7536-778c-b1dd-b901f5a8afbc" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_01a08bfd-7536-714f-93fe-e1872c1cfec4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_01a08bfd-7536-70b4-9988-68abd6e7c66c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_01a08bfd-7536-778c-b1dd-b901f5a8afbc" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_01a08bfd-7536-70b4-9988-68abd6e7c66c" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_01a08bfd-7536-7cbf-aff4-365a9faa2591" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_01a08bfd-7536-778c-b1dd-b901f5a8afbc" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_01a08bfd-7536-7cbf-aff4-365a9faa2591" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_01a08bfd-7536-7a34-af80-76f627a1d68e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_01a08bfd-7536-778c-b1dd-b901f5a8afbc" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_01a08bfd-7536-7a34-af80-76f627a1d68e" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_01a08bfd-7536-775b-bce0-d6721823d061" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_01a08bfd-7536-778c-b1dd-b901f5a8afbc" xlink:to="loc_us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_01a08bfd-7536-775b-bce0-d6721823d061" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_CreditImpairmentLoss_01a08bfd-7536-7dc9-a069-3e071abd3c4f" xlink:href="pcty-20260930.xsd#pcty_CreditImpairmentLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_FundsHeldForClientsAndCorporateInvestmentsLineItems_01a08bfd-7536-778c-b1dd-b901f5a8afbc" xlink:to="loc_pcty_CreditImpairmentLoss_01a08bfd-7536-7dc9-a069-3e071abd3c4f" xlink:type="arc" order="9"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/FairValueMeasurementDetails" xlink:type="simple" xlink:href="pcty-20260930.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_01a08bfd-7536-78c7-ae9c-e1720b964ee1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_01a08bfd-7536-795c-b6b3-2d86363eb02d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01a08bfd-7536-78c7-ae9c-e1720b964ee1" xlink:to="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_01a08bfd-7536-795c-b6b3-2d86363eb02d" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinancialInstrumentAxis_01a08bfd-7536-705a-9575-70a2e8fd1c45" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinancialInstrumentAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_01a08bfd-7536-795c-b6b3-2d86363eb02d" xlink:to="loc_us-gaap_FinancialInstrumentAxis_01a08bfd-7536-705a-9575-70a2e8fd1c45" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a08bfd-7536-705a-9575-70a2e8fd1c45_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a08bfd-7536-705a-9575-70a2e8fd1c45" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a08bfd-7536-705a-9575-70a2e8fd1c45_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a08bfd-7536-7b2e-a4bd-ccbe610a4d6a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FinancialInstrumentAxis_01a08bfd-7536-705a-9575-70a2e8fd1c45" xlink:to="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a08bfd-7536-7b2e-a4bd-ccbe610a4d6a" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_01a08bfd-7536-7a0a-b29d-34e08cf2dd31" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CorporateDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a08bfd-7536-7b2e-a4bd-ccbe610a4d6a" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_01a08bfd-7536-7a0a-b29d-34e08cf2dd31" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetBackedSecuritiesMember_01a08bfd-7536-70f9-a8f8-33389bf0afd6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetBackedSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a08bfd-7536-7b2e-a4bd-ccbe610a4d6a" xlink:to="loc_us-gaap_AssetBackedSecuritiesMember_01a08bfd-7536-70f9-a8f8-33389bf0afd6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_USTreasurySecuritiesMember_01a08bfd-7536-7753-ab3e-8897935d54ab" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_USTreasurySecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a08bfd-7536-7b2e-a4bd-ccbe610a4d6a" xlink:to="loc_us-gaap_USTreasurySecuritiesMember_01a08bfd-7536-7753-ab3e-8897935d54ab" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherDebtSecuritiesMember_01a08bfd-7536-787b-9b9d-0175dcc55a6d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherDebtSecuritiesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_01a08bfd-7536-7b2e-a4bd-ccbe610a4d6a" xlink:to="loc_us-gaap_OtherDebtSecuritiesMember_01a08bfd-7536-787b-9b9d-0175dcc55a6d" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a08bfd-7536-7f90-8b1d-baf42db1b7c1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_01a08bfd-7536-795c-b6b3-2d86363eb02d" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a08bfd-7536-7f90-8b1d-baf42db1b7c1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a08bfd-7536-7f90-8b1d-baf42db1b7c1_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a08bfd-7536-7f90-8b1d-baf42db1b7c1" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a08bfd-7536-7f90-8b1d-baf42db1b7c1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a08bfd-7536-77fb-b6f9-61847f9d85b5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_01a08bfd-7536-7f90-8b1d-baf42db1b7c1" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a08bfd-7536-77fb-b6f9-61847f9d85b5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_01a08bfd-7536-7305-980e-b5b42db02fc6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel1Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a08bfd-7536-77fb-b6f9-61847f9d85b5" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_01a08bfd-7536-7305-980e-b5b42db02fc6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_01a08bfd-7536-789b-9528-ee7bc654fc98" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel2Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a08bfd-7536-77fb-b6f9-61847f9d85b5" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_01a08bfd-7536-789b-9528-ee7bc654fc98" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_01a08bfd-7536-7a13-bd1a-5a8c22da97aa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FairValueInputsLevel3Member"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_01a08bfd-7536-77fb-b6f9-61847f9d85b5" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_01a08bfd-7536-7a13-bd1a-5a8c22da97aa" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_01a08bfd-7536-7387-b9d5-905580b0fabc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01a08bfd-7536-78c7-ae9c-e1720b964ee1" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_01a08bfd-7536-7387-b9d5-905580b0fabc" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_FundsHeldForClientsCashAndCashEquivalentsAtCarryingValue_01a08bfd-7536-76f4-abfd-c9affceb2356" xlink:href="pcty-20260930.xsd#pcty_FundsHeldForClientsCashAndCashEquivalentsAtCarryingValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01a08bfd-7536-78c7-ae9c-e1720b964ee1" xlink:to="loc_pcty_FundsHeldForClientsCashAndCashEquivalentsAtCarryingValue_01a08bfd-7536-76f4-abfd-c9affceb2356" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesAbstract_01a08bfd-7536-7df2-a57c-aa6fd5dab4b1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01a08bfd-7536-78c7-ae9c-e1720b964ee1" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesAbstract_01a08bfd-7536-7df2-a57c-aa6fd5dab4b1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_01a08bfd-7536-7cc6-9289-c02fe8339c38" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AvailableForSaleSecuritiesDebtSecurities"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AvailableForSaleSecuritiesAbstract_01a08bfd-7536-7df2-a57c-aa6fd5dab4b1" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesDebtSecurities_01a08bfd-7536-7cc6-9289-c02fe8339c38" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Investments_01a08bfd-7536-7a32-93ff-10964743b066" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Investments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_01a08bfd-7536-78c7-ae9c-e1720b964ee1" xlink:to="loc_us-gaap_Investments_01a08bfd-7536-7a32-93ff-10964743b066" xlink:type="arc" order="3"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/DebtDetails" xlink:type="simple" xlink:href="pcty-20260930.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_01a08bfd-7536-7e7f-8014-6a0aef93aab1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityTable_01a08bfd-7536-7cf1-baa3-a441238a753e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a08bfd-7536-7e7f-8014-6a0aef93aab1" xlink:to="loc_us-gaap_LineOfCreditFacilityTable_01a08bfd-7536-7cf1-baa3-a441238a753e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityAxis_01a08bfd-7536-78ff-b641-4db4c40375de" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_01a08bfd-7536-7cf1-baa3-a441238a753e" xlink:to="loc_us-gaap_CreditFacilityAxis_01a08bfd-7536-78ff-b641-4db4c40375de" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_01a08bfd-7536-78ff-b641-4db4c40375de_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CreditFacilityAxis_01a08bfd-7536-78ff-b641-4db4c40375de" xlink:to="loc_us-gaap_CreditFacilityDomain_01a08bfd-7536-78ff-b641-4db4c40375de_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CreditFacilityDomain_01a08bfd-7536-71b6-8c51-90095b5c59de" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CreditFacilityDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CreditFacilityAxis_01a08bfd-7536-78ff-b641-4db4c40375de" xlink:to="loc_us-gaap_CreditFacilityDomain_01a08bfd-7536-71b6-8c51-90095b5c59de" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_01a08bfd-7536-70bd-b6c1-be7fa71bc0b7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevolvingCreditFacilityMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a08bfd-7536-71b6-8c51-90095b5c59de" xlink:to="loc_us-gaap_RevolvingCreditFacilityMember_01a08bfd-7536-70bd-b6c1-be7fa71bc0b7" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_SwingLoanMember_01a18a43-2acc-7fdc-aed1-997c14d4e877" xlink:href="pcty-20260930.xsd#pcty_SwingLoanMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a08bfd-7536-71b6-8c51-90095b5c59de" xlink:to="loc_pcty_SwingLoanMember_01a18a43-2acc-7fdc-aed1-997c14d4e877" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LetterOfCreditMember_01a18a43-6223-7a33-b05d-c2f5cf72ec73" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LetterOfCreditMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_CreditFacilityDomain_01a08bfd-7536-71b6-8c51-90095b5c59de" xlink:to="loc_us-gaap_LetterOfCreditMember_01a18a43-6223-7a33-b05d-c2f5cf72ec73" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_01a08bfd-7536-754e-9e81-39a3762605cf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_01a08bfd-7536-7cf1-baa3-a441238a753e" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_01a08bfd-7536-754e-9e81-39a3762605cf" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a08bfd-7536-754e-9e81-39a3762605cf_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a08bfd-7536-754e-9e81-39a3762605cf" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a08bfd-7536-754e-9e81-39a3762605cf_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_01a08bfd-7536-7c46-a499-8bceab5db2f2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongtermDebtTypeDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_01a08bfd-7536-754e-9e81-39a3762605cf" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_01a08bfd-7536-7c46-a499-8bceab5db2f2" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebtMember_01a08bfd-7536-734e-aa1d-d1289b997081" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuredDebtMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_01a08bfd-7536-7c46-a499-8bceab5db2f2" xlink:to="loc_us-gaap_SecuredDebtMember_01a08bfd-7536-734e-aa1d-d1289b997081" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateAxis_01a08bfd-7536-7c88-82cb-12c7aa1509ca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableRateAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_01a08bfd-7536-7cf1-baa3-a441238a753e" xlink:to="loc_us-gaap_VariableRateAxis_01a08bfd-7536-7c88-82cb-12c7aa1509ca" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_01a08bfd-7536-7c88-82cb-12c7aa1509ca_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VariableRateAxis_01a08bfd-7536-7c88-82cb-12c7aa1509ca" xlink:to="loc_us-gaap_VariableRateDomain_01a08bfd-7536-7c88-82cb-12c7aa1509ca_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableRateDomain_01a08bfd-7536-702e-85fe-b07c5fd9f673" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableRateDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VariableRateAxis_01a08bfd-7536-7c88-82cb-12c7aa1509ca" xlink:to="loc_us-gaap_VariableRateDomain_01a08bfd-7536-702e-85fe-b07c5fd9f673" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredOvernightFinancingRateSofrMember_01a08bfd-7536-7977-93f7-b3435a85b312" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SecuredOvernightFinancingRateSofrMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_01a08bfd-7536-702e-85fe-b07c5fd9f673" xlink:to="loc_us-gaap_SecuredOvernightFinancingRateSofrMember_01a08bfd-7536-7977-93f7-b3435a85b312" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BaseRateMember_01a08bfd-7536-76e7-9ce0-7d8e6ff7a0ec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BaseRateMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VariableRateDomain_01a08bfd-7536-702e-85fe-b07c5fd9f673" xlink:to="loc_us-gaap_BaseRateMember_01a08bfd-7536-76e7-9ce0-7d8e6ff7a0ec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a08bfd-7536-71f6-8e22-7ae68840e078" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_01a08bfd-7536-7cf1-baa3-a441238a753e" xlink:to="loc_srt_RangeAxis_01a08bfd-7536-71f6-8e22-7ae68840e078" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a08bfd-7536-71f6-8e22-7ae68840e078_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a08bfd-7536-71f6-8e22-7ae68840e078" xlink:to="loc_srt_RangeMember_01a08bfd-7536-71f6-8e22-7ae68840e078_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a08bfd-7536-71bf-9d22-c085bec36123" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a08bfd-7536-71f6-8e22-7ae68840e078" xlink:to="loc_srt_RangeMember_01a08bfd-7536-71bf-9d22-c085bec36123" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MinimumMember_01a08bfd-7536-7b30-bad1-ef301b8acb85" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MinimumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a08bfd-7536-71bf-9d22-c085bec36123" xlink:to="loc_srt_MinimumMember_01a08bfd-7536-7b30-bad1-ef301b8acb85" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a08bfd-7536-7686-b6f6-2c1a0d287d75" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a08bfd-7536-71bf-9d22-c085bec36123" xlink:to="loc_srt_MaximumMember_01a08bfd-7536-7686-b6f6-2c1a0d287d75" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_01a08bfd-7536-7832-b52b-7c3fa2318da6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a08bfd-7536-7e7f-8014-6a0aef93aab1" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_01a08bfd-7536-7832-b52b-7c3fa2318da6" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_LineOfCreditFacilityContingentIncreaseAggregateMaximumBorrowingCapacity_01a08bfd-7536-7f40-b517-b553e6880afc" xlink:href="pcty-20260930.xsd#pcty_LineOfCreditFacilityContingentIncreaseAggregateMaximumBorrowingCapacity"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a08bfd-7536-7e7f-8014-6a0aef93aab1" xlink:to="loc_pcty_LineOfCreditFacilityContingentIncreaseAggregateMaximumBorrowingCapacity_01a08bfd-7536-7f40-b517-b553e6880afc" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_01a08bfd-7536-7886-8d91-a42d648cfcbd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebt"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a08bfd-7536-7e7f-8014-6a0aef93aab1" xlink:to="loc_us-gaap_LongTermDebt_01a08bfd-7536-7886-8d91-a42d648cfcbd" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromLinesOfCredit_01a08bfd-7536-7fe9-afec-5c25aaebd527" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromLinesOfCredit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a08bfd-7536-7e7f-8014-6a0aef93aab1" xlink:to="loc_us-gaap_ProceedsFromLinesOfCredit_01a08bfd-7536-7fe9-afec-5c25aaebd527" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_01a08bfd-7536-71f7-8a5e-662eed9d0063" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a08bfd-7536-7e7f-8014-6a0aef93aab1" xlink:to="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_01a08bfd-7536-71f7-8a5e-662eed9d0063" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_CreditFacilityCovenantConsolidatedLeverageRatio_01a08bfd-7536-71ba-b762-61c57030e158" xlink:href="pcty-20260930.xsd#pcty_CreditFacilityCovenantConsolidatedLeverageRatio"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a08bfd-7536-7e7f-8014-6a0aef93aab1" xlink:to="loc_pcty_CreditFacilityCovenantConsolidatedLeverageRatio_01a08bfd-7536-71ba-b762-61c57030e158" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_CreditFacilityCovenantConsolidatedInterestCoverageRatio_01a08bfd-7536-7eef-8432-d3cc02f3f7d8" xlink:href="pcty-20260930.xsd#pcty_CreditFacilityCovenantConsolidatedInterestCoverageRatio"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_01a08bfd-7536-7e7f-8014-6a0aef93aab1" xlink:to="loc_pcty_CreditFacilityCovenantConsolidatedInterestCoverageRatio_01a08bfd-7536-7eef-8432-d3cc02f3f7d8" xlink:type="arc" order="6"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/StockBasedCompensationGeneralInformationDetails" xlink:type="simple" xlink:href="pcty-20260930.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_01a08bfd-7536-79d1-bd87-baa7ae28f26e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a08bfd-7536-7056-80ec-828b27dbdcdd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a08bfd-7536-79d1-bd87-baa7ae28f26e" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a08bfd-7536-7056-80ec-828b27dbdcdd" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameAxis_01a08bfd-7536-7674-80c0-488c5daa9faa" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PlanNameAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a08bfd-7536-7056-80ec-828b27dbdcdd" xlink:to="loc_us-gaap_PlanNameAxis_01a08bfd-7536-7674-80c0-488c5daa9faa" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_01a08bfd-7536-7674-80c0-488c5daa9faa_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_01a08bfd-7536-7674-80c0-488c5daa9faa" xlink:to="loc_us-gaap_PlanNameDomain_01a08bfd-7536-7674-80c0-488c5daa9faa_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PlanNameDomain_01a08bfd-7536-7f44-9f72-fcf854cd8641" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_01a08bfd-7536-7674-80c0-488c5daa9faa" xlink:to="loc_us-gaap_PlanNameDomain_01a08bfd-7536-7f44-9f72-fcf854cd8641" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_EquityIncentivePlansMember_01a08bfd-7536-7699-a72f-8126ae28a069" xlink:href="pcty-20260930.xsd#pcty_EquityIncentivePlansMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_01a08bfd-7536-7f44-9f72-fcf854cd8641" xlink:to="loc_pcty_EquityIncentivePlansMember_01a08bfd-7536-7699-a72f-8126ae28a069" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_01a08bfd-7536-78e1-9c1b-f275747eb871" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a08bfd-7536-79d1-bd87-baa7ae28f26e" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_01a08bfd-7536-78e1-9c1b-f275747eb871" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfCapitalSharesReservedForIssuance_01a08bfd-7536-78f7-bd17-a8cd51b087da" xlink:href="pcty-20260930.xsd#pcty_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfCapitalSharesReservedForIssuance"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a08bfd-7536-79d1-bd87-baa7ae28f26e" xlink:to="loc_pcty_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfCapitalSharesReservedForIssuance_01a08bfd-7536-78f7-bd17-a8cd51b087da" xlink:type="arc" order="1"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/StockBasedCompensationCompensationExpenseDetails" xlink:type="simple" xlink:href="pcty-20260930.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_01a08bfd-7536-7ca6-9b3e-ce73983126e8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_01a08bfd-7536-7a29-8dae-8afe0cb4efe3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_01a08bfd-7536-7ca6-9b3e-ce73983126e8" xlink:to="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_01a08bfd-7536-7a29-8dae-8afe0cb4efe3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_01a08bfd-7536-7930-bc85-bdd35d97beae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementOfIncomeLocationBalanceAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_01a08bfd-7536-7a29-8dae-8afe0cb4efe3" xlink:to="loc_us-gaap_StatementOfIncomeLocationBalanceAxis_01a08bfd-7536-7930-bc85-bdd35d97beae" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_01a08bfd-7536-7503-b938-0a333bb7a388" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_01a08bfd-7536-7ca6-9b3e-ce73983126e8" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_01a08bfd-7536-7503-b938-0a333bb7a388" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount_01a08bfd-7536-7699-b8fd-a43656945e0f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_01a08bfd-7536-7ca6-9b3e-ce73983126e8" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount_01a08bfd-7536-7699-b8fd-a43656945e0f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedAbstract_01a08bfd-7536-75af-b153-94df1ce0ae47" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_01a08bfd-7536-7ca6-9b3e-ce73983126e8" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedAbstract_01a08bfd-7536-75af-b153-94df1ce0ae47" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_01a08bfd-7536-7062-95df-a95741dbf5ec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedAbstract_01a08bfd-7536-75af-b153-94df1ce0ae47" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_01a08bfd-7536-7062-95df-a95741dbf5ec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_01a08bfd-7536-7cbe-964b-f3283d4acf22" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedAbstract_01a08bfd-7536-75af-b153-94df1ce0ae47" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_01a08bfd-7536-7cbe-964b-f3283d4acf22" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/StockBasedCompensationCompensationExpenseDetails_1" xlink:type="simple" xlink:href="pcty-20260930.xsd#StockBasedCompensationCompensationExpenseDetails_1"/>
  <link:definitionLink xlink:role="http://www.paylocity.com/role/StockBasedCompensationCompensationExpenseDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_01a08bfd-7536-7ca6-9b3e-ce73983126e8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_01a08bfd-7536-7a29-8dae-8afe0cb4efe3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_01a08bfd-7536-7ca6-9b3e-ce73983126e8" xlink:to="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_01a08bfd-7536-7a29-8dae-8afe0cb4efe3" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_01a08bfd-7536-7503-b938-0a333bb7a388" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_01a08bfd-7536-7ca6-9b3e-ce73983126e8" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_01a08bfd-7536-7503-b938-0a333bb7a388" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount_01a08bfd-7536-7699-b8fd-a43656945e0f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_01a08bfd-7536-7ca6-9b3e-ce73983126e8" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount_01a08bfd-7536-7699-b8fd-a43656945e0f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedAbstract_01a08bfd-7536-75af-b153-94df1ce0ae47" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_01a08bfd-7536-7ca6-9b3e-ce73983126e8" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedAbstract_01a08bfd-7536-75af-b153-94df1ce0ae47" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_01a08bfd-7536-7062-95df-a95741dbf5ec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedAbstract_01a08bfd-7536-75af-b153-94df1ce0ae47" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_01a08bfd-7536-7062-95df-a95741dbf5ec" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_01a08bfd-7536-7cbe-964b-f3283d4acf22" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedAbstract_01a08bfd-7536-75af-b153-94df1ce0ae47" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_01a08bfd-7536-7cbe-964b-f3283d4acf22" xlink:type="arc" order="2"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/StockBasedCompensationRSUActivityDetails" xlink:type="simple" xlink:href="pcty-20260930.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_01a08bfd-7536-7a39-8f12-fe76e8f44fe7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a08bfd-7536-7123-b1bd-95ed54837ff6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a08bfd-7536-7a39-8f12-fe76e8f44fe7" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a08bfd-7536-7123-b1bd-95ed54837ff6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_01a08bfd-7536-777f-995f-8860d1f51d70" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a08bfd-7536-7123-b1bd-95ed54837ff6" xlink:to="loc_us-gaap_AwardTypeAxis_01a08bfd-7536-777f-995f-8860d1f51d70" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a08bfd-7536-777f-995f-8860d1f51d70_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_01a08bfd-7536-777f-995f-8860d1f51d70" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a08bfd-7536-777f-995f-8860d1f51d70_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a08bfd-7536-71c9-84c5-30c9d87a890c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_01a08bfd-7536-777f-995f-8860d1f51d70" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a08bfd-7536-71c9-84c5-30c9d87a890c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_01a08bfd-7536-7002-8c25-999395386d9f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a08bfd-7536-71c9-84c5-30c9d87a890c" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_01a08bfd-7536-7002-8c25-999395386d9f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a08bfd-7536-7037-8b96-87fa7e1a80e2" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a08bfd-7536-7123-b1bd-95ed54837ff6" xlink:to="loc_srt_RangeAxis_01a08bfd-7536-7037-8b96-87fa7e1a80e2" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a08bfd-7536-7037-8b96-87fa7e1a80e2_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a08bfd-7536-7037-8b96-87fa7e1a80e2" xlink:to="loc_srt_RangeMember_01a08bfd-7536-7037-8b96-87fa7e1a80e2_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a08bfd-7536-7bcb-a509-2b8c59af62c3" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a08bfd-7536-7037-8b96-87fa7e1a80e2" xlink:to="loc_srt_RangeMember_01a08bfd-7536-7bcb-a509-2b8c59af62c3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a08bfd-7536-7228-aefa-f37804430b92" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a08bfd-7536-7bcb-a509-2b8c59af62c3" xlink:to="loc_srt_MaximumMember_01a08bfd-7536-7228-aefa-f37804430b92" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_01a08bfd-7536-7b49-8325-0b57d5c60195" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a08bfd-7536-7a39-8f12-fe76e8f44fe7" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_01a08bfd-7536-7b49-8325-0b57d5c60195" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a08bfd-7536-73c1-ada3-ae2d7680a8ad" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a08bfd-7536-7a39-8f12-fe76e8f44fe7" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a08bfd-7536-73c1-ada3-ae2d7680a8ad" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_01a08bfd-7536-7543-b82c-4237294ec03e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a08bfd-7536-73c1-ada3-ae2d7680a8ad" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_01a08bfd-7536-7543-b82c-4237294ec03e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_01a08bfd-7536-722b-9de4-b538313f854b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a08bfd-7536-73c1-ada3-ae2d7680a8ad" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_01a08bfd-7536-722b-9de4-b538313f854b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_01a08bfd-7536-7e15-bef6-be00e3431144" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a08bfd-7536-73c1-ada3-ae2d7680a8ad" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_01a08bfd-7536-7e15-bef6-be00e3431144" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_01a08bfd-7536-7b6f-afbf-7a59cf8635b4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a08bfd-7536-73c1-ada3-ae2d7680a8ad" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_01a08bfd-7536-7b6f-afbf-7a59cf8635b4" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_01a08bfd-7536-719d-b603-c95295424409" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a08bfd-7536-7ca4-ac48-0bf7d52e81fb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a08bfd-7536-7a39-8f12-fe76e8f44fe7" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a08bfd-7536-7ca4-ac48-0bf7d52e81fb" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_01a08bfd-7536-7924-abe7-035f6dcdb275" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a08bfd-7536-7ca4-ac48-0bf7d52e81fb" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_01a08bfd-7536-7924-abe7-035f6dcdb275" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_01a08bfd-7536-74e2-acbe-eec4501a9d61" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a08bfd-7536-7ca4-ac48-0bf7d52e81fb" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_01a08bfd-7536-74e2-acbe-eec4501a9d61" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_01a08bfd-7536-76c3-8abf-cb0bb903493b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a08bfd-7536-7ca4-ac48-0bf7d52e81fb" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_01a08bfd-7536-76c3-8abf-cb0bb903493b" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_01a08bfd-7536-74d4-90b3-7fa2d035fcd3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a08bfd-7536-7ca4-ac48-0bf7d52e81fb" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_01a08bfd-7536-74d4-90b3-7fa2d035fcd3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_01a08bfd-7536-7a1f-bbce-205cb060f82b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/StockBasedCompensationPSUActivityDetails" xlink:type="simple" xlink:href="pcty-20260930.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_01a08bfd-7536-789e-913b-3963a9a5d15f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a08bfd-7536-7a4d-bcb6-75a7918b822b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a08bfd-7536-789e-913b-3963a9a5d15f" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a08bfd-7536-7a4d-bcb6-75a7918b822b" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_01a08bfd-7536-78cd-9f91-20705795e924" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a08bfd-7536-7a4d-bcb6-75a7918b822b" xlink:to="loc_us-gaap_AwardTypeAxis_01a08bfd-7536-78cd-9f91-20705795e924" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a08bfd-7536-78cd-9f91-20705795e924_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_01a08bfd-7536-78cd-9f91-20705795e924" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a08bfd-7536-78cd-9f91-20705795e924_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a08bfd-7536-7fc6-8727-363ef5a8bc4e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_01a08bfd-7536-78cd-9f91-20705795e924" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a08bfd-7536-7fc6-8727-363ef5a8bc4e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_01a08bfd-7536-7ade-b754-fb6788cfea7a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PerformanceSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a08bfd-7536-7fc6-8727-363ef5a8bc4e" xlink:to="loc_us-gaap_PerformanceSharesMember_01a08bfd-7536-7ade-b754-fb6788cfea7a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a08bfd-7536-76df-8b6b-5e3159c5b8e1" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a08bfd-7536-7a4d-bcb6-75a7918b822b" xlink:to="loc_srt_RangeAxis_01a08bfd-7536-76df-8b6b-5e3159c5b8e1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a08bfd-7536-76df-8b6b-5e3159c5b8e1_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a08bfd-7536-76df-8b6b-5e3159c5b8e1" xlink:to="loc_srt_RangeMember_01a08bfd-7536-76df-8b6b-5e3159c5b8e1_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a08bfd-7536-7305-a1a8-31b94d7e387d" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a08bfd-7536-76df-8b6b-5e3159c5b8e1" xlink:to="loc_srt_RangeMember_01a08bfd-7536-7305-a1a8-31b94d7e387d" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a08bfd-7536-7b5f-aeb6-ab8a1c2fc09a" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a08bfd-7536-7305-a1a8-31b94d7e387d" xlink:to="loc_srt_MaximumMember_01a08bfd-7536-7b5f-aeb6-ab8a1c2fc09a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_PSUPerformanceMeasurementPeriod_01a08bfd-7536-7ba2-af02-0df548b076a2" xlink:href="pcty-20260930.xsd#pcty_PSUPerformanceMeasurementPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a08bfd-7536-789e-913b-3963a9a5d15f" xlink:to="loc_pcty_PSUPerformanceMeasurementPeriod_01a08bfd-7536-7ba2-af02-0df548b076a2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_01a08bfd-7536-7703-835e-b2f109e5244f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a08bfd-7536-789e-913b-3963a9a5d15f" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_01a08bfd-7536-7703-835e-b2f109e5244f" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_PercentageOfSharesTargetToEachPerformanceStockUnit_01a08bfd-7536-7997-9f98-430ffc7bcf48" xlink:href="pcty-20260930.xsd#pcty_PercentageOfSharesTargetToEachPerformanceStockUnit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a08bfd-7536-789e-913b-3963a9a5d15f" xlink:to="loc_pcty_PercentageOfSharesTargetToEachPerformanceStockUnit_01a08bfd-7536-7997-9f98-430ffc7bcf48" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a08bfd-7536-71e0-b51d-fa70a5a5e909" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a08bfd-7536-789e-913b-3963a9a5d15f" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a08bfd-7536-71e0-b51d-fa70a5a5e909" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_01a08bfd-7536-72fe-923b-36bcef924c14" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a08bfd-7536-71e0-b51d-fa70a5a5e909" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_01a08bfd-7536-72fe-923b-36bcef924c14" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_01a08bfd-7536-7831-86a8-843f9ab6788b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a08bfd-7536-71e0-b51d-fa70a5a5e909" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_01a08bfd-7536-7831-86a8-843f9ab6788b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_01a08bfd-7536-7908-a604-3a26cf77ff50" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a08bfd-7536-71e0-b51d-fa70a5a5e909" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_01a08bfd-7536-7908-a604-3a26cf77ff50" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_01a08bfd-7536-710f-a48d-1f98b7fa4bdf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a08bfd-7536-756e-803b-d0db67f1936c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a08bfd-7536-789e-913b-3963a9a5d15f" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a08bfd-7536-756e-803b-d0db67f1936c" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_01a08bfd-7536-764f-8352-850bf2f2ed15" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a08bfd-7536-756e-803b-d0db67f1936c" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_01a08bfd-7536-764f-8352-850bf2f2ed15" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_01a08bfd-7536-79df-beb3-335d11feeeb4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a08bfd-7536-756e-803b-d0db67f1936c" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_01a08bfd-7536-79df-beb3-335d11feeeb4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_01a08bfd-7536-7111-ab18-b05740d745e0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a08bfd-7536-756e-803b-d0db67f1936c" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_01a08bfd-7536-7111-ab18-b05740d745e0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_01a08bfd-7536-76ae-9cc7-ec3614e767ae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/StockBasedCompensationMSUActivityDetails" xlink:type="simple" xlink:href="pcty-20260930.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_01a08bfd-7536-7c79-91a6-0f5294ea1893" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a08bfd-7536-7336-aff4-65307f421fe6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a08bfd-7536-7c79-91a6-0f5294ea1893" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a08bfd-7536-7336-aff4-65307f421fe6" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_01a08bfd-7536-7b4d-a2ab-e13de69863fe" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a08bfd-7536-7336-aff4-65307f421fe6" xlink:to="loc_us-gaap_AwardTypeAxis_01a08bfd-7536-7b4d-a2ab-e13de69863fe" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a08bfd-7536-7b4d-a2ab-e13de69863fe_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_01a08bfd-7536-7b4d-a2ab-e13de69863fe" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a08bfd-7536-7b4d-a2ab-e13de69863fe_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a08bfd-7536-7536-961d-c5b0577a7a53" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_01a08bfd-7536-7b4d-a2ab-e13de69863fe" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a08bfd-7536-7536-961d-c5b0577a7a53" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_MarketStockUnitsMember_01a08bfd-7536-759b-b99a-3b367bfe0da5" xlink:href="pcty-20260930.xsd#pcty_MarketStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a08bfd-7536-7536-961d-c5b0577a7a53" xlink:to="loc_pcty_MarketStockUnitsMember_01a08bfd-7536-759b-b99a-3b367bfe0da5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a08bfd-7536-7c7f-88e6-542c74bbb2d9" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a08bfd-7536-7336-aff4-65307f421fe6" xlink:to="loc_srt_RangeAxis_01a08bfd-7536-7c7f-88e6-542c74bbb2d9" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a08bfd-7536-7c7f-88e6-542c74bbb2d9_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a08bfd-7536-7c7f-88e6-542c74bbb2d9" xlink:to="loc_srt_RangeMember_01a08bfd-7536-7c7f-88e6-542c74bbb2d9_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a08bfd-7536-76bb-9324-428e80b42660" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a08bfd-7536-7c7f-88e6-542c74bbb2d9" xlink:to="loc_srt_RangeMember_01a08bfd-7536-76bb-9324-428e80b42660" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a08bfd-7536-7042-817d-455a5a95770a" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a08bfd-7536-76bb-9324-428e80b42660" xlink:to="loc_srt_MaximumMember_01a08bfd-7536-7042-817d-455a5a95770a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_01a08bfd-7536-733d-881d-c9b351ef733a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a08bfd-7536-7c79-91a6-0f5294ea1893" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_01a08bfd-7536-733d-881d-c9b351ef733a" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_PercentageOfSharesTargetToEachMarketShareUnit_01a08bfd-7536-7805-928d-9d6ee917cab5" xlink:href="pcty-20260930.xsd#pcty_PercentageOfSharesTargetToEachMarketShareUnit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a08bfd-7536-7c79-91a6-0f5294ea1893" xlink:to="loc_pcty_PercentageOfSharesTargetToEachMarketShareUnit_01a08bfd-7536-7805-928d-9d6ee917cab5" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a08bfd-7536-7124-a7a1-0fbfaa784974" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a08bfd-7536-7c79-91a6-0f5294ea1893" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a08bfd-7536-7124-a7a1-0fbfaa784974" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_01a08bfd-7536-7f1c-8d38-6bcaa09fcece" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a08bfd-7536-7124-a7a1-0fbfaa784974" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_01a08bfd-7536-7f1c-8d38-6bcaa09fcece" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_01a08bfd-7536-7a1d-b1d9-122b7c575d7d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a08bfd-7536-7124-a7a1-0fbfaa784974" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_01a08bfd-7536-7a1d-b1d9-122b7c575d7d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_01a08bfd-7536-7099-b783-9fb0e2b8d495" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a08bfd-7536-7124-a7a1-0fbfaa784974" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_01a08bfd-7536-7099-b783-9fb0e2b8d495" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_01a08bfd-7536-7a90-aa72-ca36e4bdb283" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_01a08bfd-7536-7124-a7a1-0fbfaa784974" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_01a08bfd-7536-7a90-aa72-ca36e4bdb283" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_01a08bfd-7536-7f6f-ab55-09690bd4f211" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a08bfd-7536-776e-80e3-671b936f971c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a08bfd-7536-7c79-91a6-0f5294ea1893" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a08bfd-7536-776e-80e3-671b936f971c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_01a08bfd-7536-7717-b902-1b000c38507c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a08bfd-7536-776e-80e3-671b936f971c" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_01a08bfd-7536-7717-b902-1b000c38507c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_01a08bfd-7536-7d4a-9329-83e9708a0e8b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a08bfd-7536-776e-80e3-671b936f971c" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_01a08bfd-7536-7d4a-9329-83e9708a0e8b" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_01a08bfd-7536-7bc9-b3d4-57c17e874cfc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a08bfd-7536-776e-80e3-671b936f971c" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_01a08bfd-7536-7bc9-b3d4-57c17e874cfc" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_01a08bfd-7536-7730-8139-2ebbab5e02ec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_01a08bfd-7536-776e-80e3-671b936f971c" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_01a08bfd-7536-7730-8139-2ebbab5e02ec" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_01a08bfd-7536-7bc2-b706-385ea5c3039f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/StockBasedCompensationMSUInformationDetails" xlink:type="simple" xlink:href="pcty-20260930.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_01a08bfd-7536-7349-ae80-996e94291001" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a08bfd-7536-79ab-8cdd-d10c32a77530" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a08bfd-7536-7349-ae80-996e94291001" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a08bfd-7536-79ab-8cdd-d10c32a77530" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AwardTypeAxis_01a08bfd-7536-7415-ac8a-516e63a8ad41" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AwardTypeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a08bfd-7536-79ab-8cdd-d10c32a77530" xlink:to="loc_us-gaap_AwardTypeAxis_01a08bfd-7536-7415-ac8a-516e63a8ad41" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a08bfd-7536-7415-ac8a-516e63a8ad41_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_01a08bfd-7536-7415-ac8a-516e63a8ad41" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a08bfd-7536-7415-ac8a-516e63a8ad41_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a08bfd-7536-78d4-bdfe-f90812918591" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_01a08bfd-7536-7415-ac8a-516e63a8ad41" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a08bfd-7536-78d4-bdfe-f90812918591" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_MarketStockUnitsMember_01a08bfd-7536-7c6d-85ef-6aa3f5f5d39c" xlink:href="pcty-20260930.xsd#pcty_MarketStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_01a08bfd-7536-78d4-bdfe-f90812918591" xlink:to="loc_pcty_MarketStockUnitsMember_01a08bfd-7536-7c6d-85ef-6aa3f5f5d39c" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeAxis_01a08bfd-7536-780c-a432-f73a82aa7ddc" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_01a08bfd-7536-79ab-8cdd-d10c32a77530" xlink:to="loc_srt_RangeAxis_01a08bfd-7536-780c-a432-f73a82aa7ddc" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a08bfd-7536-780c-a432-f73a82aa7ddc_default" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_srt_RangeAxis_01a08bfd-7536-780c-a432-f73a82aa7ddc" xlink:to="loc_srt_RangeMember_01a08bfd-7536-780c-a432-f73a82aa7ddc_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_RangeMember_01a08bfd-7536-7aca-b88d-a98e07f7bee0" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_RangeMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_srt_RangeAxis_01a08bfd-7536-780c-a432-f73a82aa7ddc" xlink:to="loc_srt_RangeMember_01a08bfd-7536-7aca-b88d-a98e07f7bee0" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_srt_MaximumMember_01a08bfd-7536-7c83-accc-e6471bce825e" xlink:href="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd#srt_MaximumMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_srt_RangeMember_01a08bfd-7536-7aca-b88d-a98e07f7bee0" xlink:to="loc_srt_MaximumMember_01a08bfd-7536-7c83-accc-e6471bce825e" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_01a08bfd-7536-7452-a1f8-3009580827f2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_01a08bfd-7536-7349-ae80-996e94291001" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_01a08bfd-7536-7452-a1f8-3009580827f2" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_01a08bfd-7536-7678-a7c7-f659b82b6ccb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_01a08bfd-7536-7452-a1f8-3009580827f2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_01a08bfd-7536-7678-a7c7-f659b82b6ccb" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_01a08bfd-7536-76db-8e5a-ce8e874587a4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_01a08bfd-7536-7452-a1f8-3009580827f2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_01a08bfd-7536-76db-8e5a-ce8e874587a4" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_01a08bfd-7536-7a30-81b4-85fc088848ba" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_01a08bfd-7536-7452-a1f8-3009580827f2" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_01a08bfd-7536-7a30-81b4-85fc088848ba" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_01a08bfd-7536-7fc5-a795-86e99d600295" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAndMethodologyAbstract_01a08bfd-7536-7452-a1f8-3009580827f2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_01a08bfd-7536-7fc5-a795-86e99d600295" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/NetIncomePerShareDetails" xlink:type="simple" xlink:href="pcty-20260930.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_01a08bfd-7536-7775-9769-ae751e9f3c35" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_ScheduleOfEarningsPerShareTable_01a08bfd-7536-782c-a818-deb08a5ec38e" xlink:href="pcty-20260930.xsd#pcty_ScheduleOfEarningsPerShareTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a08bfd-7536-7775-9769-ae751e9f3c35" xlink:to="loc_pcty_ScheduleOfEarningsPerShareTable_01a08bfd-7536-782c-a818-deb08a5ec38e" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_01a08bfd-7536-754c-a54b-af7ab3bf4344" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_pcty_ScheduleOfEarningsPerShareTable_01a08bfd-7536-782c-a818-deb08a5ec38e" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_01a08bfd-7536-754c-a54b-af7ab3bf4344" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a08bfd-7536-754c-a54b-af7ab3bf4344_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_01a08bfd-7536-754c-a54b-af7ab3bf4344" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a08bfd-7536-754c-a54b-af7ab3bf4344_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a08bfd-7536-76fb-8a2f-4f40c2e203e6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesNameDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis_01a08bfd-7536-754c-a54b-af7ab3bf4344" xlink:to="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a08bfd-7536-76fb-8a2f-4f40c2e203e6" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_01a08bfd-7536-7d6e-bb8c-ce9031616575" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedStockUnitsRSUMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a08bfd-7536-76fb-8a2f-4f40c2e203e6" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_01a08bfd-7536-7d6e-bb8c-ce9031616575" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PerformanceSharesMember_01a08bfd-7536-7533-b174-7496feb8f8c7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PerformanceSharesMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a08bfd-7536-76fb-8a2f-4f40c2e203e6" xlink:to="loc_us-gaap_PerformanceSharesMember_01a08bfd-7536-7533-b174-7496feb8f8c7" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_MarketStockUnitsMember_01a08bfd-7536-79da-bfb1-0daad09d935d" xlink:href="pcty-20260930.xsd#pcty_MarketStockUnitsMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesNameDomain_01a08bfd-7536-76fb-8a2f-4f40c2e203e6" xlink:to="loc_pcty_MarketStockUnitsMember_01a08bfd-7536-79da-bfb1-0daad09d935d" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareReconciliationAbstract_01a08bfd-7536-77bd-8894-8f370d0ebbd5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareReconciliationAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareLineItems_01a08bfd-7536-7775-9769-ae751e9f3c35" xlink:to="loc_us-gaap_EarningsPerShareReconciliationAbstract_01a08bfd-7536-77bd-8894-8f370d0ebbd5" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_NumeratorForCalculationOfBasicAndDilutedNetLossPerShareAbstract_01a08bfd-7536-7cbc-bece-944742accad3" xlink:href="pcty-20260930.xsd#pcty_NumeratorForCalculationOfBasicAndDilutedNetLossPerShareAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareReconciliationAbstract_01a08bfd-7536-77bd-8894-8f370d0ebbd5" xlink:to="loc_pcty_NumeratorForCalculationOfBasicAndDilutedNetLossPerShareAbstract_01a08bfd-7536-7cbc-bece-944742accad3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_01a08bfd-7536-71a4-b0bb-698c226f39c1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_NumeratorForCalculationOfBasicAndDilutedNetLossPerShareAbstract_01a08bfd-7536-7cbc-bece-944742accad3" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_01a08bfd-7536-71a4-b0bb-698c226f39c1" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_DenominatorForCalculationOfBasicAndDilutedNetLossPerShareAbstract_01a08bfd-7536-702f-92bd-63875e7abd9a" xlink:href="pcty-20260930.xsd#pcty_DenominatorForCalculationOfBasicAndDilutedNetLossPerShareAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareReconciliationAbstract_01a08bfd-7536-77bd-8894-8f370d0ebbd5" xlink:to="loc_pcty_DenominatorForCalculationOfBasicAndDilutedNetLossPerShareAbstract_01a08bfd-7536-702f-92bd-63875e7abd9a" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasicAbstract_01a08bfd-7536-763c-9742-e85f845b54c3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasicAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_DenominatorForCalculationOfBasicAndDilutedNetLossPerShareAbstract_01a08bfd-7536-702f-92bd-63875e7abd9a" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasicAbstract_01a08bfd-7536-763c-9742-e85f845b54c3" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_01a08bfd-7536-7fc6-9321-3aad335ce5ba" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasicAbstract_01a08bfd-7536-763c-9742-e85f845b54c3" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_01a08bfd-7536-7fc6-9321-3aad335ce5ba" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_01a08bfd-7536-7cbc-9671-d9c3b9104884" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_DenominatorForCalculationOfBasicAndDilutedNetLossPerShareAbstract_01a08bfd-7536-702f-92bd-63875e7abd9a" xlink:to="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_01a08bfd-7536-7cbc-9671-d9c3b9104884" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_01a08bfd-7536-7093-82d9-30c02841763e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustmentAbstract_01a08bfd-7536-7cbc-9671-d9c3b9104884" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_01a08bfd-7536-7093-82d9-30c02841763e" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_01a08bfd-7536-753a-857f-84ed1bf999a4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_DenominatorForCalculationOfBasicAndDilutedNetLossPerShareAbstract_01a08bfd-7536-702f-92bd-63875e7abd9a" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_01a08bfd-7536-753a-857f-84ed1bf999a4" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_NetIncomePerShareAbstract_01a08bfd-7536-7ee9-adb9-a6811dd9a9b0" xlink:href="pcty-20260930.xsd#pcty_NetIncomePerShareAbstract"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareReconciliationAbstract_01a08bfd-7536-77bd-8894-8f370d0ebbd5" xlink:to="loc_pcty_NetIncomePerShareAbstract_01a08bfd-7536-7ee9-adb9-a6811dd9a9b0" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareBasic_01a08bfd-7536-7a59-8516-e693246a044c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareBasic"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_NetIncomePerShareAbstract_01a08bfd-7536-7ee9-adb9-a6811dd9a9b0" xlink:to="loc_us-gaap_EarningsPerShareBasic_01a08bfd-7536-7a59-8516-e693246a044c" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EarningsPerShareDiluted_01a08bfd-7536-7e3d-aa63-89dd85ec40f1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EarningsPerShareDiluted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_pcty_NetIncomePerShareAbstract_01a08bfd-7536-7ee9-adb9-a6811dd9a9b0" xlink:to="loc_us-gaap_EarningsPerShareDiluted_01a08bfd-7536-7e3d-aa63-89dd85ec40f1" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_01a08bfd-7536-700a-8409-eabb4b0ac827" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EarningsPerShareReconciliationAbstract_01a08bfd-7536-77bd-8894-8f370d0ebbd5" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_01a08bfd-7536-700a-8409-eabb4b0ac827" xlink:type="arc" order="4"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://www.paylocity.com/role/SegmentReportingDetails" xlink:type="simple" xlink:href="pcty-20260930.xsd#SegmentReportingDetails"/>
  <link:definitionLink xlink:role="http://www.paylocity.com/role/SegmentReportingDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_01a08bfd-7536-72ca-a132-c107fc1be965" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingInformationLineItems"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_01a08bfd-7536-7dc3-9681-8c08868418a1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a08bfd-7536-72ca-a132-c107fc1be965" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_01a08bfd-7536-7dc3-9681-8c08868418a1" xlink:type="arc" order="1" xbrldt:closed="true" xbrldt:contextElement="segment"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_01a08bfd-7536-71a8-9b80-1a13ba660eaf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StatementBusinessSegmentsAxis"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_01a08bfd-7536-7dc3-9681-8c08868418a1" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_01a08bfd-7536-71a8-9b80-1a13ba660eaf" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a08bfd-7536-71a8-9b80-1a13ba660eaf_default" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a08bfd-7536-71a8-9b80-1a13ba660eaf" xlink:to="loc_us-gaap_SegmentDomain_01a08bfd-7536-71a8-9b80-1a13ba660eaf_default" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentDomain_01a08bfd-7536-7d83-84b1-2d26805fdc88" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentDomain"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_01a08bfd-7536-71a8-9b80-1a13ba660eaf" xlink:to="loc_us-gaap_SegmentDomain_01a08bfd-7536-7d83-84b1-2d26805fdc88" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_ReportableSegmentMember_01a08bfd-7536-791b-b77d-660809b4b544" xlink:href="pcty-20260930.xsd#pcty_ReportableSegmentMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_01a08bfd-7536-7d83-84b1-2d26805fdc88" xlink:to="loc_pcty_ReportableSegmentMember_01a08bfd-7536-791b-b77d-660809b4b544" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NumberOfReportableSegments_01a08bfd-7536-7f04-a320-4616d54f4a3f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NumberOfReportableSegments"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a08bfd-7536-72ca-a132-c107fc1be965" xlink:to="loc_us-gaap_NumberOfReportableSegments_01a08bfd-7536-7f04-a320-4616d54f4a3f" xlink:type="arc" order="0"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_01a08bfd-7536-7390-b2b9-15661e588811" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Revenues"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a08bfd-7536-72ca-a132-c107fc1be965" xlink:to="loc_us-gaap_Revenues_01a08bfd-7536-7390-b2b9-15661e588811" xlink:type="arc" order="1"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_CostOfGoodsAndServicesSoldAdjusted_01a08bfd-7536-7612-b661-69546858938c" xlink:href="pcty-20260930.xsd#pcty_CostOfGoodsAndServicesSoldAdjusted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a08bfd-7536-72ca-a132-c107fc1be965" xlink:to="loc_pcty_CostOfGoodsAndServicesSoldAdjusted_01a08bfd-7536-7612-b661-69546858938c" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_SellingAndMarketingExpenseAdjusted_01a08bfd-7536-7065-b4c2-d6bc454b6e9f" xlink:href="pcty-20260930.xsd#pcty_SellingAndMarketingExpenseAdjusted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a08bfd-7536-72ca-a132-c107fc1be965" xlink:to="loc_pcty_SellingAndMarketingExpenseAdjusted_01a08bfd-7536-7065-b4c2-d6bc454b6e9f" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_ResearchAndDevelopmentExpenseAdjusted_01a08bfd-7536-7514-8ecc-3f755d253f7d" xlink:href="pcty-20260930.xsd#pcty_ResearchAndDevelopmentExpenseAdjusted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a08bfd-7536-72ca-a132-c107fc1be965" xlink:to="loc_pcty_ResearchAndDevelopmentExpenseAdjusted_01a08bfd-7536-7514-8ecc-3f755d253f7d" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_GeneralAndAdministrativeExpenseAdjusted_01a08bfd-7536-7a70-9afc-4231689a2dd8" xlink:href="pcty-20260930.xsd#pcty_GeneralAndAdministrativeExpenseAdjusted"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a08bfd-7536-72ca-a132-c107fc1be965" xlink:to="loc_pcty_GeneralAndAdministrativeExpenseAdjusted_01a08bfd-7536-7a70-9afc-4231689a2dd8" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_01a08bfd-7536-7d7f-828f-7f2280477784" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a08bfd-7536-72ca-a132-c107fc1be965" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_01a08bfd-7536-7d7f-828f-7f2280477784" xlink:type="arc" order="6"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_01a08bfd-7536-7c7a-937d-30dd31ed3401" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a08bfd-7536-72ca-a132-c107fc1be965" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_01a08bfd-7536-7c7a-937d-30dd31ed3401" xlink:type="arc" order="7"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingOtherItemAmount_01a08bfd-7536-710b-ac31-9b2b6c93c128" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingOtherItemAmount"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a08bfd-7536-72ca-a132-c107fc1be965" xlink:to="loc_us-gaap_SegmentReportingOtherItemAmount_01a08bfd-7536-710b-ac31-9b2b6c93c128" xlink:type="arc" order="8"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_01a08bfd-7536-79bd-9667-03e809cec4ed" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_01a08bfd-7536-72ca-a132-c107fc1be965" xlink:to="loc_us-gaap_NetIncomeLoss_01a08bfd-7536-79bd-9667-03e809cec4ed" xlink:type="arc" order="9"/>
  </link:definitionLink>
  <link:roleRef roleURI="http://xbrl.sec.gov/ecd/role/IndividualsOnly" xlink:type="simple" xlink:href="https://xbrl.sec.gov/ecd/2026/ecd-2026.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/2026/ecd-2026.xsd#ecd_AllIndividualsMember"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_AndrewCappotelliMember_01a0d4f4-536e-7c02-8f27-fed9bfd10477" xlink:href="pcty-20260930.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_01a0d4f4-536e-7c02-8f27-fed9bfd10477" xlink:type="arc" order="2"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_RyanGlennMember_01a0d4fc-c1cf-7829-843b-54acbf64f54c" xlink:href="pcty-20260930.xsd#pcty_RyanGlennMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ecd_AllIndividualsMember" xlink:to="loc_pcty_RyanGlennMember_01a0d4fc-c1cf-7829-843b-54acbf64f54c" xlink:type="arc" order="3"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_MelissaKingMember_01a0d4fd-0b48-7142-9688-d155d0e8bac3" xlink:href="pcty-20260930.xsd#pcty_MelissaKingMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ecd_AllIndividualsMember" xlink:to="loc_pcty_MelissaKingMember_01a0d4fd-0b48-7142-9688-d155d0e8bac3" xlink:type="arc" order="4"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_NicholasRostMember_01a0d4fd-452c-74ad-9134-bd390568ecb5" xlink:href="pcty-20260930.xsd#pcty_NicholasRostMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ecd_AllIndividualsMember" xlink:to="loc_pcty_NicholasRostMember_01a0d4fd-452c-74ad-9134-bd390568ecb5" xlink:type="arc" order="5"/>
    <link:loc xlink:type="locator" xlink:label="loc_pcty_JoshuaScuttMember_01a0d4fe-5bbe-7b4a-886e-25402fde9427" xlink:href="pcty-20260930.xsd#pcty_JoshuaScuttMember"/>
    <link:definitionArc xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_ecd_AllIndividualsMember" xlink:to="loc_pcty_JoshuaScuttMember_01a0d4fe-5bbe-7b4a-886e-25402fde9427" xlink:type="arc" order="6"/>
  </link:definitionLink>
</link:linkbase>
