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

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2021 Workiva-->
<!--r:689d51da-b96e-4918-96e1-1efb5a80d0e1,g:bfc3a757-d695-4b41-91c7-984585195b7e-->
<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" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.stepstonegroup.com/role/CondensedConsolidatedBalanceSheetsUnaudited" xlink:type="simple" xlink:href="step-20210630.xsd#CondensedConsolidatedBalanceSheetsUnaudited"/>
  <link:calculationLink xlink:role="http://www.stepstonegroup.com/role/CondensedConsolidatedBalanceSheetsUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_23082a5b-0460-43b6-a0be-15c0039d2082" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_b21c0b94-11bf-4862-adb8-61291e3efdeb" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_23082a5b-0460-43b6-a0be-15c0039d2082" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_b21c0b94-11bf-4862-adb8-61291e3efdeb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_5e6f3bc5-94e6-4ade-b9ae-a6141869a153" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Liabilities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_23082a5b-0460-43b6-a0be-15c0039d2082" xlink:to="loc_us-gaap_Liabilities_5e6f3bc5-94e6-4ade-b9ae-a6141869a153" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_094a355d-1522-4824-b572-daf133c58372" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_23082a5b-0460-43b6-a0be-15c0039d2082" xlink:to="loc_us-gaap_CommitmentsAndContingencies_094a355d-1522-4824-b572-daf133c58372" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_90a40455-b2af-49ed-99c0-452110f0b609" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_ca7be87d-4342-4c41-8364-39a3ec77aa7c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_90a40455-b2af-49ed-99c0-452110f0b609" xlink:to="loc_us-gaap_OperatingLeaseLiability_ca7be87d-4342-4c41-8364-39a3ec77aa7c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableAndOtherAccruedLiabilities_29ae3908-e450-4a3f-b3b8-23439c2aa49e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountsPayableAndOtherAccruedLiabilities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_90a40455-b2af-49ed-99c0-452110f0b609" xlink:to="loc_us-gaap_AccountsPayableAndOtherAccruedLiabilities_29ae3908-e450-4a3f-b3b8-23439c2aa49e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_step_EquityMethodInvestmentAccruedCarriedInterestRelatedCompensationPayable_225cf424-e40d-4ca3-b57d-a2609a02232b" xlink:href="step-20210630.xsd#step_EquityMethodInvestmentAccruedCarriedInterestRelatedCompensationPayable"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_90a40455-b2af-49ed-99c0-452110f0b609" xlink:to="loc_step_EquityMethodInvestmentAccruedCarriedInterestRelatedCompensationPayable_225cf424-e40d-4ca3-b57d-a2609a02232b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent_c42b3c65-b0a3-47ef-a48e-a4b6b01cacb3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_90a40455-b2af-49ed-99c0-452110f0b609" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrentAndNoncurrent_c42b3c65-b0a3-47ef-a48e-a4b6b01cacb3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DueToRelatedPartiesCurrentAndNoncurrent_b438d4df-cf9b-447c-bdb6-32ecd729cf97" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DueToRelatedPartiesCurrentAndNoncurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_90a40455-b2af-49ed-99c0-452110f0b609" xlink:to="loc_us-gaap_DueToRelatedPartiesCurrentAndNoncurrent_b438d4df-cf9b-447c-bdb6-32ecd729cf97" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_03db3718-f9b5-4b22-a92f-a7a1bb9b5229" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterest_9178e225-f620-4eac-8a07-111cbba71d70" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MinorityInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_03db3718-f9b5-4b22-a92f-a7a1bb9b5229" xlink:to="loc_us-gaap_MinorityInterest_9178e225-f620-4eac-8a07-111cbba71d70" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_7b8913fa-3359-461b-8be1-d676665b2692" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquity"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_03db3718-f9b5-4b22-a92f-a7a1bb9b5229" xlink:to="loc_us-gaap_StockholdersEquity_7b8913fa-3359-461b-8be1-d676665b2692" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_eddd1bba-8472-4f77-a7dc-f3bd3c4f9dbc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DueFromRelatedParties_1f45a36b-f7fa-46a4-9ea3-7e0c414eea48" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DueFromRelatedParties"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_eddd1bba-8472-4f77-a7dc-f3bd3c4f9dbc" xlink:to="loc_us-gaap_DueFromRelatedParties_1f45a36b-f7fa-46a4-9ea3-7e0c414eea48" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_0b4c564b-9b6e-4914-8a7a-740f47e5cee2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_eddd1bba-8472-4f77-a7dc-f3bd3c4f9dbc" xlink:to="loc_us-gaap_Goodwill_0b4c564b-9b6e-4914-8a7a-740f47e5cee2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssets_a7e64183-68b9-4a72-b7ab-7c1b0d5cab4c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherAssets"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_eddd1bba-8472-4f77-a7dc-f3bd3c4f9dbc" xlink:to="loc_us-gaap_OtherAssets_a7e64183-68b9-4a72-b7ab-7c1b0d5cab4c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_95b28625-79e7-4ff2-80e0-2a3f4ad68aaa" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_eddd1bba-8472-4f77-a7dc-f3bd3c4f9dbc" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_95b28625-79e7-4ff2-80e0-2a3f4ad68aaa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_step_EquityMethodInvestmentsExcludingAccruedCarriedInterestAllocations_b36a9d89-da75-4441-af77-ee97261646d5" xlink:href="step-20210630.xsd#step_EquityMethodInvestmentsExcludingAccruedCarriedInterestAllocations"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_eddd1bba-8472-4f77-a7dc-f3bd3c4f9dbc" xlink:to="loc_step_EquityMethodInvestmentsExcludingAccruedCarriedInterestAllocations_b36a9d89-da75-4441-af77-ee97261646d5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNet_c75231bc-98fc-41fb-b3e7-9ac2ae8ff0a4" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountsReceivableNet"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_eddd1bba-8472-4f77-a7dc-f3bd3c4f9dbc" xlink:to="loc_us-gaap_AccountsReceivableNet_c75231bc-98fc-41fb-b3e7-9ac2ae8ff0a4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_a8259f88-0180-43c5-97ca-2ef826f13429" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_eddd1bba-8472-4f77-a7dc-f3bd3c4f9dbc" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_a8259f88-0180-43c5-97ca-2ef826f13429" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_step_EquityMethodInvestmentsAccruedCarriedInterestAllocations_17764050-f862-4cd2-b486-e578c6f4f4fa" xlink:href="step-20210630.xsd#step_EquityMethodInvestmentsAccruedCarriedInterestAllocations"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_eddd1bba-8472-4f77-a7dc-f3bd3c4f9dbc" xlink:to="loc_step_EquityMethodInvestmentsAccruedCarriedInterestAllocations_17764050-f862-4cd2-b486-e578c6f4f4fa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxAssetsNet_ea9a3b30-0272-4ad2-9043-51ddcc3b3827" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredIncomeTaxAssetsNet"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_eddd1bba-8472-4f77-a7dc-f3bd3c4f9dbc" xlink:to="loc_us-gaap_DeferredIncomeTaxAssetsNet_ea9a3b30-0272-4ad2-9043-51ddcc3b3827" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCash_4096097c-2d50-4f3e-bf9c-3fcde70e972b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestrictedCash"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_eddd1bba-8472-4f77-a7dc-f3bd3c4f9dbc" xlink:to="loc_us-gaap_RestrictedCash_4096097c-2d50-4f3e-bf9c-3fcde70e972b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_2ce4b6f6-146b-489d-b34e-6548b16430f6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_eddd1bba-8472-4f77-a7dc-f3bd3c4f9dbc" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_2ce4b6f6-146b-489d-b34e-6548b16430f6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_2b4c3de3-8390-43a9-b362-4097b5376fbd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_b5ee1c00-240e-4451-abdf-2fe4be8e8c09" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_2b4c3de3-8390-43a9-b362-4097b5376fbd" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_b5ee1c00-240e-4451-abdf-2fe4be8e8c09" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_96180167-3303-4bd7-bef4-a7973bcd562c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_2b4c3de3-8390-43a9-b362-4097b5376fbd" xlink:to="loc_us-gaap_CommonStockValue_96180167-3303-4bd7-bef4-a7973bcd562c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapital_084105fc-6818-404c-ac4e-5267af5fcc5b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdditionalPaidInCapital"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_2b4c3de3-8390-43a9-b362-4097b5376fbd" xlink:to="loc_us-gaap_AdditionalPaidInCapital_084105fc-6818-404c-ac4e-5267af5fcc5b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_e28c4ae0-6c48-4105-80e9-a225ad60496c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_2b4c3de3-8390-43a9-b362-4097b5376fbd" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_e28c4ae0-6c48-4105-80e9-a225ad60496c" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.stepstonegroup.com/role/CondensedConsolidatedStatementsofIncomeLossUnaudited" xlink:type="simple" xlink:href="step-20210630.xsd#CondensedConsolidatedStatementsofIncomeLossUnaudited"/>
  <link:calculationLink xlink:role="http://www.stepstonegroup.com/role/CondensedConsolidatedStatementsofIncomeLossUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_b766e6b6-d09c-49ef-b803-3b53f3b78e2e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_dedbd0f3-699d-4709-b4ba-c2c8289a064c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CostsAndExpenses"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_b766e6b6-d09c-49ef-b803-3b53f3b78e2e" xlink:to="loc_us-gaap_CostsAndExpenses_dedbd0f3-699d-4709-b4ba-c2c8289a064c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_1e9461cd-505e-48ec-8f9c-36e18b9923fd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_b766e6b6-d09c-49ef-b803-3b53f3b78e2e" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_1e9461cd-505e-48ec-8f9c-36e18b9923fd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_593245af-2636-4dc1-bea4-6af2141976fe" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Revenues"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_b766e6b6-d09c-49ef-b803-3b53f3b78e2e" xlink:to="loc_us-gaap_Revenues_593245af-2636-4dc1-bea4-6af2141976fe" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_e2b8a109-4d11-4e23-bc8c-25fa134e00b1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_f1607279-4c1c-4f8b-9abb-c3c80e028163" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestExpense"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_e2b8a109-4d11-4e23-bc8c-25fa134e00b1" xlink:to="loc_us-gaap_InterestExpense_f1607279-4c1c-4f8b-9abb-c3c80e028163" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromEquityMethodInvestments_3a097e22-ccea-453f-9df9-417c79007078" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeLossFromEquityMethodInvestments"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_e2b8a109-4d11-4e23-bc8c-25fa134e00b1" xlink:to="loc_us-gaap_IncomeLossFromEquityMethodInvestments_3a097e22-ccea-453f-9df9-417c79007078" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_6d5569b1-0646-4b5e-ad16-90791ca47731" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_e2b8a109-4d11-4e23-bc8c-25fa134e00b1" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_6d5569b1-0646-4b5e-ad16-90791ca47731" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentIncomeInterest_c0ff751b-0c06-4bf8-bb1d-7e8116008846" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InvestmentIncomeInterest"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_e2b8a109-4d11-4e23-bc8c-25fa134e00b1" xlink:to="loc_us-gaap_InvestmentIncomeInterest_c0ff751b-0c06-4bf8-bb1d-7e8116008846" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_97b8ea0d-4085-4fff-9c6e-b5cf246dd2b3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CostsAndExpenses"/>
    <link:loc xlink:type="locator" xlink:label="loc_step_CompensationAndBenefitsExpense_ea788ca6-b652-4309-9622-b83b0f898708" xlink:href="step-20210630.xsd#step_CompensationAndBenefitsExpense"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_97b8ea0d-4085-4fff-9c6e-b5cf246dd2b3" xlink:to="loc_step_CompensationAndBenefitsExpense_ea788ca6-b652-4309-9622-b83b0f898708" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_0232e02f-6423-4c8f-91ce-47ac46d2138b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_97b8ea0d-4085-4fff-9c6e-b5cf246dd2b3" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_0232e02f-6423-4c8f-91ce-47ac46d2138b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_86609cbd-3059-44de-b632-3b2124169e81" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProfitLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_f6245859-c305-4e8d-86b4-7fd4097d51a1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ProfitLoss_86609cbd-3059-44de-b632-3b2124169e81" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_f6245859-c305-4e8d-86b4-7fd4097d51a1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_3365d640-f695-4970-b1c8-f0a7672099bf" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ProfitLoss_86609cbd-3059-44de-b632-3b2124169e81" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_3365d640-f695-4970-b1c8-f0a7672099bf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_4ea6af52-707e-4653-b133-5388c7e95509" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Revenues"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueNotFromContractWithCustomer_7478b159-95b6-4183-bc63-3f784202b65a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueNotFromContractWithCustomer"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Revenues_4ea6af52-707e-4653-b133-5388c7e95509" xlink:to="loc_us-gaap_RevenueNotFromContractWithCustomer_7478b159-95b6-4183-bc63-3f784202b65a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_2d39f439-d21b-4cc9-bad2-9a14343fda87" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Revenues_4ea6af52-707e-4653-b133-5388c7e95509" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_2d39f439-d21b-4cc9-bad2-9a14343fda87" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_a68994ea-7907-4493-9a53-f49d6b2c56ed" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_81eb8b00-2bc2-4df7-a870-bab886a5092a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProfitLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_a68994ea-7907-4493-9a53-f49d6b2c56ed" xlink:to="loc_us-gaap_ProfitLoss_81eb8b00-2bc2-4df7-a870-bab886a5092a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_0e03ac70-4f37-4bf1-b453-fd695d86564b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_a68994ea-7907-4493-9a53-f49d6b2c56ed" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_0e03ac70-4f37-4bf1-b453-fd695d86564b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_step_PerformanceFeeRelatedCompensationRelatedToCarriedInterestAllocation_abadb6cb-2185-434c-b9d9-e309b4f79d8c" xlink:href="step-20210630.xsd#step_PerformanceFeeRelatedCompensationRelatedToCarriedInterestAllocation"/>
    <link:loc xlink:type="locator" xlink:label="loc_step_PerformanceFeeRelatedCompensationRelatedToCarriedInterestAllocationUnrealized_22581c92-6a49-4335-a25c-0d9bd189b7ac" xlink:href="step-20210630.xsd#step_PerformanceFeeRelatedCompensationRelatedToCarriedInterestAllocationUnrealized"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_step_PerformanceFeeRelatedCompensationRelatedToCarriedInterestAllocation_abadb6cb-2185-434c-b9d9-e309b4f79d8c" xlink:to="loc_step_PerformanceFeeRelatedCompensationRelatedToCarriedInterestAllocationUnrealized_22581c92-6a49-4335-a25c-0d9bd189b7ac" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_step_PerformanceFeeRelatedCompensationRelatedToCarriedInterestAllocationRealized_2ca39c14-2922-4719-bed3-73b021187c55" xlink:href="step-20210630.xsd#step_PerformanceFeeRelatedCompensationRelatedToCarriedInterestAllocationRealized"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_step_PerformanceFeeRelatedCompensationRelatedToCarriedInterestAllocation_abadb6cb-2185-434c-b9d9-e309b4f79d8c" xlink:to="loc_step_PerformanceFeeRelatedCompensationRelatedToCarriedInterestAllocationRealized_2ca39c14-2922-4719-bed3-73b021187c55" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_step_CompensationAndBenefitsExpense_18bf5195-d28f-4b27-b7f2-dd4972fe8135" xlink:href="step-20210630.xsd#step_CompensationAndBenefitsExpense"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_26737f91-8874-40fd-8500-a4104f2e62b9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_step_CompensationAndBenefitsExpense_18bf5195-d28f-4b27-b7f2-dd4972fe8135" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_26737f91-8874-40fd-8500-a4104f2e62b9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_step_PerformanceFeeRelatedCompensationRelatedToCarriedInterestAllocation_b191df13-a7d3-45f6-81e4-dd65366b64f6" xlink:href="step-20210630.xsd#step_PerformanceFeeRelatedCompensationRelatedToCarriedInterestAllocation"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_step_CompensationAndBenefitsExpense_18bf5195-d28f-4b27-b7f2-dd4972fe8135" xlink:to="loc_step_PerformanceFeeRelatedCompensationRelatedToCarriedInterestAllocation_b191df13-a7d3-45f6-81e4-dd65366b64f6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_step_CompensationExpenseCashBasedCompensationAndBenefits_e5280517-3dc3-42fb-82b1-d466fd13d411" xlink:href="step-20210630.xsd#step_CompensationExpenseCashBasedCompensationAndBenefits"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_step_CompensationAndBenefitsExpense_18bf5195-d28f-4b27-b7f2-dd4972fe8135" xlink:to="loc_step_CompensationExpenseCashBasedCompensationAndBenefits_e5280517-3dc3-42fb-82b1-d466fd13d411" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.stepstonegroup.com/role/CondensedConsolidatedStatementsofComprehensiveIncomeUnaudited" xlink:type="simple" xlink:href="step-20210630.xsd#CondensedConsolidatedStatementsofComprehensiveIncomeUnaudited"/>
  <link:calculationLink xlink:role="http://www.stepstonegroup.com/role/CondensedConsolidatedStatementsofComprehensiveIncomeUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_79ecb440-fb58-4553-86d1-f6cdaf242189" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_cc4da81e-d4d7-4606-9378-2766cac566ff" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_79ecb440-fb58-4553-86d1-f6cdaf242189" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest_cc4da81e-d4d7-4606-9378-2766cac566ff" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_8d9ec935-0743-4812-81dc-45a2b54c6511" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_79ecb440-fb58-4553-86d1-f6cdaf242189" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_8d9ec935-0743-4812-81dc-45a2b54c6511" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_5f8a3913-e3e4-42cb-b72d-63101278f582" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_fb076528-9608-4c6b-8361-30443e87ac61" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProfitLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_5f8a3913-e3e4-42cb-b72d-63101278f582" xlink:to="loc_us-gaap_ProfitLoss_fb076528-9608-4c6b-8361-30443e87ac61" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_4ea6ed69-38c3-4e50-b44b-c157dd8952a6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_5f8a3913-e3e4-42cb-b72d-63101278f582" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_4ea6ed69-38c3-4e50-b44b-c157dd8952a6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_a382fc56-adb0-425d-9122-6649d9da69f8" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_f9fd5bde-37bd-4a09-9639-59854814c924" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTax_a382fc56-adb0-425d-9122-6649d9da69f8" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_f9fd5bde-37bd-4a09-9639-59854814c924" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.stepstonegroup.com/role/CondensedConsolidatedStatementsofCashFlowsUnaudited" xlink:type="simple" xlink:href="step-20210630.xsd#CondensedConsolidatedStatementsofCashFlowsUnaudited"/>
  <link:calculationLink xlink:role="http://www.stepstonegroup.com/role/CondensedConsolidatedStatementsofCashFlowsUnaudited" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_969bda90-6594-4896-82b4-be7ebe888848" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_13f9abed-f85c-4903-b4b2-d0835c73bf83" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_969bda90-6594-4896-82b4-be7ebe888848" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_13f9abed-f85c-4903-b4b2-d0835c73bf83" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_bddc634c-5a36-40d5-b11a-7f5668e501ad" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_969bda90-6594-4896-82b4-be7ebe888848" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_bddc634c-5a36-40d5-b11a-7f5668e501ad" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_272ad87b-0c1b-4722-876e-dbbe8e8b3fd1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_969bda90-6594-4896-82b4-be7ebe888848" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_272ad87b-0c1b-4722-876e-dbbe8e8b3fd1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f72aeca1-b43a-49cd-8790-0827940efd59" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_969bda90-6594-4896-82b4-be7ebe888848" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_f72aeca1-b43a-49cd-8790-0827940efd59" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_dcb7cfef-8125-4658-8785-0235226741cd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCash_6d03cf25-5d69-4d8f-b4c9-2158e4b7c6b5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RestrictedCash"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_dcb7cfef-8125-4658-8785-0235226741cd" xlink:to="loc_us-gaap_RestrictedCash_6d03cf25-5d69-4d8f-b4c9-2158e4b7c6b5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_6c685db7-fcd3-4afc-b549-97ede0a756e3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_dcb7cfef-8125-4658-8785-0235226741cd" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_6c685db7-fcd3-4afc-b549-97ede0a756e3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_e33d951d-56f0-49f4-9424-2978a1ba20a9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_725c8300-801e-4e01-99d5-7bf9b797f1b5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProfitLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_e33d951d-56f0-49f4-9424-2978a1ba20a9" xlink:to="loc_us-gaap_ProfitLoss_725c8300-801e-4e01-99d5-7bf9b797f1b5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInDueFromRelatedParties_49d7e6cb-30de-47cc-b41d-b53015f62027" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInDueFromRelatedParties"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_e33d951d-56f0-49f4-9424-2978a1ba20a9" xlink:to="loc_us-gaap_IncreaseDecreaseInDueFromRelatedParties_49d7e6cb-30de-47cc-b41d-b53015f62027" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_step_IncreaseDecreaseInAccruedCarriedInterestRelatedCompensationPayable_cd55eb49-3510-4b8e-a128-5576a37402e1" xlink:href="step-20210630.xsd#step_IncreaseDecreaseInAccruedCarriedInterestRelatedCompensationPayable"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_e33d951d-56f0-49f4-9424-2978a1ba20a9" xlink:to="loc_step_IncreaseDecreaseInAccruedCarriedInterestRelatedCompensationPayable_cd55eb49-3510-4b8e-a128-5576a37402e1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInDueToRelatedParties_8861acf1-e099-419b-b845-7d11dae2b7ec" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInDueToRelatedParties"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_e33d951d-56f0-49f4-9424-2978a1ba20a9" xlink:to="loc_us-gaap_IncreaseDecreaseInDueToRelatedParties_8861acf1-e099-419b-b845-7d11dae2b7ec" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_fa93024e-2856-43b5-9157-769b08c927e7" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_e33d951d-56f0-49f4-9424-2978a1ba20a9" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_fa93024e-2856-43b5-9157-769b08c927e7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_e56c2fdb-9e38-40cf-9a08-22fb0b3c5462" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_e33d951d-56f0-49f4-9424-2978a1ba20a9" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_e56c2fdb-9e38-40cf-9a08-22fb0b3c5462" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_4dc637d4-5127-4928-a17b-cf47f49d94c3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ShareBasedCompensation"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_e33d951d-56f0-49f4-9424-2978a1ba20a9" xlink:to="loc_us-gaap_ShareBasedCompensation_4dc637d4-5127-4928-a17b-cf47f49d94c3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_afdbcb0f-bb2e-4407-9794-d5772bf9031c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_e33d951d-56f0-49f4-9424-2978a1ba20a9" xlink:to="loc_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_afdbcb0f-bb2e-4407-9794-d5772bf9031c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_2ebfa542-4347-4abd-8780-c9160bdc962b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DeferredIncomeTaxesAndTaxCredits"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_e33d951d-56f0-49f4-9424-2978a1ba20a9" xlink:to="loc_us-gaap_DeferredIncomeTaxesAndTaxCredits_2ebfa542-4347-4abd-8780-c9160bdc962b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_step_CarriedInterestAllocationAndInvestmentIncomeUnrealizedGainLoss_e5a4b0b8-c369-4992-914c-9cf380a53086" xlink:href="step-20210630.xsd#step_CarriedInterestAllocationAndInvestmentIncomeUnrealizedGainLoss"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_e33d951d-56f0-49f4-9424-2978a1ba20a9" xlink:to="loc_step_CarriedInterestAllocationAndInvestmentIncomeUnrealizedGainLoss_e5a4b0b8-c369-4992-914c-9cf380a53086" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_35ac4f7c-5aae-4114-965e-fccc8f4bf037" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:calculationArc order="11" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_e33d951d-56f0-49f4-9424-2978a1ba20a9" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_35ac4f7c-5aae-4114-965e-fccc8f4bf037" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WriteOffOfDeferredDebtIssuanceCost_ab5c2909-6420-48d4-83e4-fce52daad79b" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_WriteOffOfDeferredDebtIssuanceCost"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_e33d951d-56f0-49f4-9424-2978a1ba20a9" xlink:to="loc_us-gaap_WriteOffOfDeferredDebtIssuanceCost_ab5c2909-6420-48d4-83e4-fce52daad79b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities_d2667927-d471-46be-b1d2-5005236a9985" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities"/>
    <link:calculationArc order="13" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_e33d951d-56f0-49f4-9424-2978a1ba20a9" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities_d2667927-d471-46be-b1d2-5005236a9985" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_step_PerformanceFeeRelatedCompensationRelatedToCarriedInterestAllocationUnrealized_ca7dd2a3-258d-47bc-991f-b050e49abc36" xlink:href="step-20210630.xsd#step_PerformanceFeeRelatedCompensationRelatedToCarriedInterestAllocationUnrealized"/>
    <link:calculationArc order="14" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_e33d951d-56f0-49f4-9424-2978a1ba20a9" xlink:to="loc_step_PerformanceFeeRelatedCompensationRelatedToCarriedInterestAllocationUnrealized_ca7dd2a3-258d-47bc-991f-b050e49abc36" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncashIncomeExpense_f0bc2330-094d-47ef-a775-d8aa48de571e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherNoncashIncomeExpense"/>
    <link:calculationArc order="15" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_e33d951d-56f0-49f4-9424-2978a1ba20a9" xlink:to="loc_us-gaap_OtherNoncashIncomeExpense_f0bc2330-094d-47ef-a775-d8aa48de571e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_step_IncreaseDecreaseInLeaseRightOfUseAssetsNetOfLeaseLiabilities_c83aab7f-2665-4858-ad26-730d77e82907" xlink:href="step-20210630.xsd#step_IncreaseDecreaseInLeaseRightOfUseAssetsNetOfLeaseLiabilities"/>
    <link:calculationArc order="16" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_e33d951d-56f0-49f4-9424-2978a1ba20a9" xlink:to="loc_step_IncreaseDecreaseInLeaseRightOfUseAssetsNetOfLeaseLiabilities_c83aab7f-2665-4858-ad26-730d77e82907" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_6f7e34d5-134b-48c5-b713-276cd1f70fdd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquireEquityMethodInvestments_5dc75cd4-2064-4bf7-9bc0-a79b12bd52ae" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsToAcquireEquityMethodInvestments"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_6f7e34d5-134b-48c5-b713-276cd1f70fdd" xlink:to="loc_us-gaap_PaymentsToAcquireEquityMethodInvestments_5dc75cd4-2064-4bf7-9bc0-a79b12bd52ae" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_84c2273c-99e0-4797-948c-a30bce1d36e5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_6f7e34d5-134b-48c5-b713-276cd1f70fdd" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_84c2273c-99e0-4797-948c-a30bce1d36e5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital_b9d5f763-a1e1-4243-9771-23fd514f38cc" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_6f7e34d5-134b-48c5-b713-276cd1f70fdd" xlink:to="loc_us-gaap_ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital_b9d5f763-a1e1-4243-9771-23fd514f38cc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_39837530-32b0-49c0-9ec4-f9374f493824" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_6f7e34d5-134b-48c5-b713-276cd1f70fdd" xlink:to="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_39837530-32b0-49c0-9ec4-f9374f493824" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_36c4f5b4-11ce-470b-93cb-c4a90de36efa" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividendsMinorityInterest_8c6b1a6c-f577-4358-a14d-afd8ffe122fd" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsOfDividendsMinorityInterest"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_36c4f5b4-11ce-470b-93cb-c4a90de36efa" xlink:to="loc_us-gaap_PaymentsOfDividendsMinorityInterest_8c6b1a6c-f577-4358-a14d-afd8ffe122fd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromMinorityShareholders_b6781d5a-8490-4f96-9330-ad44e15db030" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromMinorityShareholders"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_36c4f5b4-11ce-470b-93cb-c4a90de36efa" xlink:to="loc_us-gaap_ProceedsFromMinorityShareholders_b6781d5a-8490-4f96-9330-ad44e15db030" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_42ffa37c-3c5f-4cde-8df4-68a3fde96b8e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_36c4f5b4-11ce-470b-93cb-c4a90de36efa" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_42ffa37c-3c5f-4cde-8df4-68a3fde96b8e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromPartnershipContribution_4a563463-dc2d-4589-b156-f861e9bceae1" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromPartnershipContribution"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_36c4f5b4-11ce-470b-93cb-c4a90de36efa" xlink:to="loc_us-gaap_ProceedsFromPartnershipContribution_4a563463-dc2d-4589-b156-f861e9bceae1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_887b94c0-62f4-4c67-b839-9d7b58b6f9df" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_36c4f5b4-11ce-470b-93cb-c4a90de36efa" xlink:to="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_887b94c0-62f4-4c67-b839-9d7b58b6f9df" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfStockIssuanceCosts_012ce905-4cd4-4436-8f0e-64749fec9e18" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsOfStockIssuanceCosts"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_36c4f5b4-11ce-470b-93cb-c4a90de36efa" xlink:to="loc_us-gaap_PaymentsOfStockIssuanceCosts_012ce905-4cd4-4436-8f0e-64749fec9e18" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.stepstonegroup.com/role/InvestmentsEquityMethodInvestmentsDetails" xlink:type="simple" xlink:href="step-20210630.xsd#InvestmentsEquityMethodInvestmentsDetails"/>
  <link:calculationLink xlink:role="http://www.stepstonegroup.com/role/InvestmentsEquityMethodInvestmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EquityMethodInvestments_522d2e28-e2f2-4aa4-864d-d4aab1ad3172" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EquityMethodInvestments"/>
    <link:loc xlink:type="locator" xlink:label="loc_step_EquityMethodInvestmentsAccruedCarriedInterestAllocations_1037433f-d182-489e-b05d-5b0bd91b945e" xlink:href="step-20210630.xsd#step_EquityMethodInvestmentsAccruedCarriedInterestAllocations"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EquityMethodInvestments_522d2e28-e2f2-4aa4-864d-d4aab1ad3172" xlink:to="loc_step_EquityMethodInvestmentsAccruedCarriedInterestAllocations_1037433f-d182-489e-b05d-5b0bd91b945e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_step_EquityMethodInvestmentsExcludingAccruedCarriedInterestAllocations_cf0ea806-a26a-4d8a-acbd-7481d09cac21" xlink:href="step-20210630.xsd#step_EquityMethodInvestmentsExcludingAccruedCarriedInterestAllocations"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_EquityMethodInvestments_522d2e28-e2f2-4aa4-864d-d4aab1ad3172" xlink:to="loc_step_EquityMethodInvestmentsExcludingAccruedCarriedInterestAllocations_cf0ea806-a26a-4d8a-acbd-7481d09cac21" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.stepstonegroup.com/role/FairValueMeasurementsScheduleofFairValueofLiabilitiesDetails" xlink:type="simple" xlink:href="step-20210630.xsd#FairValueMeasurementsScheduleofFairValueofLiabilitiesDetails"/>
  <link:calculationLink xlink:role="http://www.stepstonegroup.com/role/FairValueMeasurementsScheduleofFairValueofLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesFairValueDisclosure_2350e4d3-6921-43a7-a9de-726e05b46371" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesFairValueDisclosure"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_5e0e1c7e-bcac-4622-98dc-67e7d395e94c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_BusinessCombinationContingentConsiderationLiability"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesFairValueDisclosure_2350e4d3-6921-43a7-a9de-726e05b46371" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationLiability_5e0e1c7e-bcac-4622-98dc-67e7d395e94c" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.stepstonegroup.com/role/IntangiblesandGoodwillScheduleofIntangiblesandGoodwillDetails" xlink:type="simple" xlink:href="step-20210630.xsd#IntangiblesandGoodwillScheduleofIntangiblesandGoodwillDetails"/>
  <link:calculationLink xlink:role="http://www.stepstonegroup.com/role/IntangiblesandGoodwillScheduleofIntangiblesandGoodwillDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_10592c48-8e39-4bad-b775-6a57b92a42e6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_db1394f6-8c96-4025-8d20-94a1ac14831e" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_10592c48-8e39-4bad-b775-6a57b92a42e6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_db1394f6-8c96-4025-8d20-94a1ac14831e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_53752a9a-b4a4-413e-b3b8-c354a5087546" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_10592c48-8e39-4bad-b775-6a57b92a42e6" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_53752a9a-b4a4-413e-b3b8-c354a5087546" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.stepstonegroup.com/role/IntangiblesandGoodwillScheduleofIntangibleAssetsFutureAmortizationExpenseDetails" xlink:type="simple" xlink:href="step-20210630.xsd#IntangiblesandGoodwillScheduleofIntangibleAssetsFutureAmortizationExpenseDetails"/>
  <link:calculationLink xlink:role="http://www.stepstonegroup.com/role/IntangiblesandGoodwillScheduleofIntangibleAssetsFutureAmortizationExpenseDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_7f822f3c-ec96-4e5a-8631-dba0c4885149" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_0cc7a471-caa3-45f9-b513-adcd8d21d023" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_7f822f3c-ec96-4e5a-8631-dba0c4885149" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_0cc7a471-caa3-45f9-b513-adcd8d21d023" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_e4f118ac-a9ee-4057-8536-60d64cc3509c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_7f822f3c-ec96-4e5a-8631-dba0c4885149" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_e4f118ac-a9ee-4057-8536-60d64cc3509c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_ad18cdaf-e85a-4a61-9574-1517c5e7ddee" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_7f822f3c-ec96-4e5a-8631-dba0c4885149" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_ad18cdaf-e85a-4a61-9574-1517c5e7ddee" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_394ca528-5ecd-41ba-8dca-49d56f6ffe4f" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_7f822f3c-ec96-4e5a-8631-dba0c4885149" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_394ca528-5ecd-41ba-8dca-49d56f6ffe4f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_5a92c72a-9025-4a49-bc54-571b4be343fe" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_7f822f3c-ec96-4e5a-8631-dba0c4885149" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_5a92c72a-9025-4a49-bc54-571b4be343fe" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_step_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour_959d25c3-4c3f-418b-b09d-788a14ef0857" xlink:href="step-20210630.xsd#step_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_7f822f3c-ec96-4e5a-8631-dba0c4885149" xlink:to="loc_step_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour_959d25c3-4c3f-418b-b09d-788a14ef0857" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.stepstonegroup.com/role/EarningsPerShareDetails" xlink:type="simple" xlink:href="step-20210630.xsd#EarningsPerShareDetails"/>
  <link:calculationLink xlink:role="http://www.stepstonegroup.com/role/EarningsPerShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_faf968e5-eecc-408a-9d5c-2c837b20022a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_7227d5b5-64f8-4393-8023-3cf425d076c9" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_faf968e5-eecc-408a-9d5c-2c837b20022a" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_7227d5b5-64f8-4393-8023-3cf425d076c9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_bfe0383b-500b-4941-b7b9-1b2e34426de0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_faf968e5-eecc-408a-9d5c-2c837b20022a" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_bfe0383b-500b-4941-b7b9-1b2e34426de0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_457bf743-a4e8-42e2-b2b2-ec2fc4bc7ab3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits_7d1f7bf0-7e72-437f-919e-318586a8ed7a" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_457bf743-a4e8-42e2-b2b2-ec2fc4bc7ab3" xlink:to="loc_us-gaap_AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits_7d1f7bf0-7e72-437f-919e-318586a8ed7a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_d9c0d00b-63bd-4c9d-a042-a08960034d46" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_457bf743-a4e8-42e2-b2b2-ec2fc4bc7ab3" xlink:to="loc_us-gaap_NetIncomeLoss_d9c0d00b-63bd-4c9d-a042-a08960034d46" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.stepstonegroup.com/role/CommitmentandContingenciesComponentsofLeaseExpenseandSupplementalCashFlowInformationDetails" xlink:type="simple" xlink:href="step-20210630.xsd#CommitmentandContingenciesComponentsofLeaseExpenseandSupplementalCashFlowInformationDetails"/>
  <link:calculationLink xlink:role="http://www.stepstonegroup.com/role/CommitmentandContingenciesComponentsofLeaseExpenseandSupplementalCashFlowInformationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseCost_7eedac7f-8a5d-4671-8cd3-92f93d3b3494" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LeaseCost"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SubleaseIncome_571d02ea-7804-4b08-b1ed-30527d47b8b5" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SubleaseIncome"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_7eedac7f-8a5d-4671-8cd3-92f93d3b3494" xlink:to="loc_us-gaap_SubleaseIncome_571d02ea-7804-4b08-b1ed-30527d47b8b5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseCost_96363ab9-2863-4ec2-8650-af4932d39ce0" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseCost"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_7eedac7f-8a5d-4671-8cd3-92f93d3b3494" xlink:to="loc_us-gaap_OperatingLeaseCost_96363ab9-2863-4ec2-8650-af4932d39ce0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableLeaseCost_db87058c-4cd1-4cab-8fd3-8955fe446c89" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_VariableLeaseCost"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_7eedac7f-8a5d-4671-8cd3-92f93d3b3494" xlink:to="loc_us-gaap_VariableLeaseCost_db87058c-4cd1-4cab-8fd3-8955fe446c89" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.stepstonegroup.com/role/CommitmentandContingenciesOperatingLeaseMaturityDetails" xlink:type="simple" xlink:href="step-20210630.xsd#CommitmentandContingenciesOperatingLeaseMaturityDetails"/>
  <link:calculationLink xlink:role="http://www.stepstonegroup.com/role/CommitmentandContingenciesOperatingLeaseMaturityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_b9860c10-5f2c-4ea0-ae6d-b9ff8e0728b3" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_b9e51fb5-eeea-4bac-a0f8-6aa057f6b266" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_b9860c10-5f2c-4ea0-ae6d-b9ff8e0728b3" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_b9e51fb5-eeea-4bac-a0f8-6aa057f6b266" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_step_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour_2fd5cfeb-ee6b-43da-9975-6b3066cc5ff2" xlink:href="step-20210630.xsd#step_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_b9860c10-5f2c-4ea0-ae6d-b9ff8e0728b3" xlink:to="loc_step_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour_2fd5cfeb-ee6b-43da-9975-6b3066cc5ff2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_faada52f-7991-4ffd-8008-d6bbaa886c62" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_b9860c10-5f2c-4ea0-ae6d-b9ff8e0728b3" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_faada52f-7991-4ffd-8008-d6bbaa886c62" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_5456f329-1abf-4257-b5cb-8c56b5825dfe" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_b9860c10-5f2c-4ea0-ae6d-b9ff8e0728b3" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_5456f329-1abf-4257-b5cb-8c56b5825dfe" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_7bfd015a-29ee-4181-814a-91728adaa5b6" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_b9860c10-5f2c-4ea0-ae6d-b9ff8e0728b3" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_7bfd015a-29ee-4181-814a-91728adaa5b6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_d2419d7c-b780-41be-ab0d-18875e3d78a2" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_b9860c10-5f2c-4ea0-ae6d-b9ff8e0728b3" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_d2419d7c-b780-41be-ab0d-18875e3d78a2" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.stepstonegroup.com/role/CommitmentandContingenciesOperatingLeaseMaturityDetails_1" xlink:type="simple" xlink:href="step-20210630.xsd#CommitmentandContingenciesOperatingLeaseMaturityDetails_1"/>
  <link:calculationLink xlink:role="http://www.stepstonegroup.com/role/CommitmentandContingenciesOperatingLeaseMaturityDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_60d749ae-02b4-4e96-a945-4a959e0cab3d" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_536df729-c781-4336-94d2-b5aa339bbf6c" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_60d749ae-02b4-4e96-a945-4a959e0cab3d" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_536df729-c781-4336-94d2-b5aa339bbf6c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_49e8dcef-95c1-4c92-bbaa-5afa1b795a25" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_60d749ae-02b4-4e96-a945-4a959e0cab3d" xlink:to="loc_us-gaap_OperatingLeaseLiability_49e8dcef-95c1-4c92-bbaa-5afa1b795a25" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
