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    <ReturnTs>2024-05-13T19:00:04Z</ReturnTs>
    <TaxPeriodEndDt>2023-12-31</TaxPeriodEndDt>
    <ReturnTypeCd>990EZ</ReturnTypeCd>
    <TaxPeriodBeginDt>2023-01-01</TaxPeriodBeginDt>
    <Filer>
      <EIN>831623656</EIN>
      <BusinessName>
        <BusinessNameLine1Txt>MACS FUND</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>MACS</BusinessNameControlTxt>
      <PhoneNum>6109991999</PhoneNum>
      <USAddress>
        <AddressLine1Txt>447 E MOUNT AIRY AVE</AddressLine1Txt>
        <CityNm>PHILADELPHIA</CityNm>
        <StateAbbreviationCd>PA</StateAbbreviationCd>
        <ZIPCd>19119</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>Clare Morrison</PersonNm>
      <PersonTitleTxt>President</PersonTitleTxt>
      <PhoneNum>6109991999</PhoneNum>
      <SignatureDt>2024-05-13</SignatureDt>
    </BusinessOfficerGrp>
    <SigningOfficerGrp>
      <PersonFullName>
        <PersonFirstNm>Clare</PersonFirstNm>
        <PersonLastNm>Morrison</PersonLastNm>
      </PersonFullName>
    </SigningOfficerGrp>
    <IRSResponsiblePrtyInfoCurrInd>true</IRSResponsiblePrtyInfoCurrInd>
    <TaxYr>2023</TaxYr>
    <BuildTS>2023-04-26 12:10:37Z</BuildTS>
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      <MethodOfAccountingCashInd>X</MethodOfAccountingCashInd>
      <ScheduleBNotRequiredInd>X</ScheduleBNotRequiredInd>
      <WebsiteAddressTxt>www.macsfund.com</WebsiteAddressTxt>
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      <TypeOfOrganizationCorpInd>X</TypeOfOrganizationCorpInd>
      <GrossReceiptsAmt>30366</GrossReceiptsAmt>
      <ContributionsGiftsGrantsEtcAmt>30366</ContributionsGiftsGrantsEtcAmt>
      <ProgramServiceRevenueAmt>0</ProgramServiceRevenueAmt>
      <MembershipDuesAmt>0</MembershipDuesAmt>
      <InvestmentIncomeAmt>0</InvestmentIncomeAmt>
      <SaleOfAssetsGrossAmt>0</SaleOfAssetsGrossAmt>
      <CostOrOtherBasisExpenseSaleAmt>0</CostOrOtherBasisExpenseSaleAmt>
      <GainOrLossFromSaleOfAssetsAmt>0</GainOrLossFromSaleOfAssetsAmt>
      <GamingGrossIncomeAmt>0</GamingGrossIncomeAmt>
      <FundraisingGrossIncomeAmt>0</FundraisingGrossIncomeAmt>
      <SpecialEventsDirectExpensesAmt>0</SpecialEventsDirectExpensesAmt>
      <SpecialEventsNetIncomeLossAmt>0</SpecialEventsNetIncomeLossAmt>
      <GrossSalesOfInventoryAmt>0</GrossSalesOfInventoryAmt>
      <CostOfGoodsSoldAmt>0</CostOfGoodsSoldAmt>
      <GrossProfitLossSlsOfInvntryAmt>0</GrossProfitLossSlsOfInvntryAmt>
      <OtherRevenueTotalAmt>0</OtherRevenueTotalAmt>
      <TotalRevenueAmt>30366</TotalRevenueAmt>
      <GrantsAndSimilarAmountsPaidAmt>6500</GrantsAndSimilarAmountsPaidAmt>
      <BenefitsPaidToOrForMembersAmt>0</BenefitsPaidToOrForMembersAmt>
      <SalariesOtherCompEmplBnftAmt>0</SalariesOtherCompEmplBnftAmt>
      <FeesAndOtherPymtToIndCntrctAmt>468</FeesAndOtherPymtToIndCntrctAmt>
      <OccupancyRentUtltsAndMaintAmt>0</OccupancyRentUtltsAndMaintAmt>
      <PrintingPublicationsPostageAmt>0</PrintingPublicationsPostageAmt>
      <OtherExpensesTotalAmt>1791</OtherExpensesTotalAmt>
      <TotalExpensesAmt>8759</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>21607</ExcessOrDeficitForYearAmt>
      <NetAssetsOrFundBalancesBOYAmt>33764</NetAssetsOrFundBalancesBOYAmt>
      <OtherChangesInNetAssetsAmt>0</OtherChangesInNetAssetsAmt>
      <NetAssetsOrFundBalancesEOYAmt>55371</NetAssetsOrFundBalancesEOYAmt>
      <CashSavingsAndInvestmentsGrp>
        <BOYAmt>34098</BOYAmt>
        <EOYAmt>57474</EOYAmt>
      </CashSavingsAndInvestmentsGrp>
      <LandAndBuildingsGrp>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </LandAndBuildingsGrp>
      <OtherAssetsTotalDetail>
        <BOYAmt>0</BOYAmt>
        <EOYAmt>0</EOYAmt>
      </OtherAssetsTotalDetail>
      <Form990TotalAssetsGrp>
        <BOYAmt>34098</BOYAmt>
        <EOYAmt>57474</EOYAmt>
      </Form990TotalAssetsGrp>
      <SumOfTotalLiabilitiesGrp>
        <BOYAmt>334</BOYAmt>
        <EOYAmt>2103</EOYAmt>
      </SumOfTotalLiabilitiesGrp>
      <NetAssetsOrFundBalancesGrp>
        <BOYAmt>33764</BOYAmt>
        <EOYAmt>55371</EOYAmt>
      </NetAssetsOrFundBalancesGrp>
      <PrimaryExemptPurposeTxt>Form 990 - EZ Part I Line 10 Grants 413 2000 to Morris Animal Refuge 71 2000 Peanut Fund 1015 2500 Philly TNR Program Form 990 - EZ Part I Line 16 Other Expenses Parking Supplies AdminPay Pall Fees Feline Services</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>0</DescriptionProgramSrvcAccomTxt>
      </ProgramSrvcAccomplishmentGrp>
      <TotalProgramServiceExpensesAmt>0</TotalProgramServiceExpensesAmt>
      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Clare Morrison</PersonNm>
        <TitleTxt>President</TitleTxt>
        <AverageHrsPerWkDevotedToPosRt>10.00</AverageHrsPerWkDevotedToPosRt>
        <CompensationAmt>0</CompensationAmt>
        <EmployeeBenefitProgramAmt>0</EmployeeBenefitProgramAmt>
        <ExpenseAccountOtherAllwncAmt>0</ExpenseAccountOtherAllwncAmt>
      </OfficerDirectorTrusteeEmplGrp>
      <ActivitiesNotPreviouslyRptInd>false</ActivitiesNotPreviouslyRptInd>
      <ChgMadeToOrgnzngDocNotRptInd>false</ChgMadeToOrgnzngDocNotRptInd>
      <OrganizationHadUBIInd>false</OrganizationHadUBIInd>
      <SubjectToProxyTaxInd>false</SubjectToProxyTaxInd>
      <OrganizationDissolvedEtcInd>false</OrganizationDissolvedEtcInd>
      <MadeLoansToFromOfficersInd>false</MadeLoansToFromOfficersInd>
      <EngagedInExcessBenefitTransInd>false</EngagedInExcessBenefitTransInd>
      <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
      <StatesWhereCopyOfReturnIsFldCd>PA</StatesWhereCopyOfReturnIsFldCd>
      <BooksInCareOfDetail>
        <PersonNm>Clare Morrison</PersonNm>
        <USAddress>
          <AddressLine1Txt>447 E Mount Airy</AddressLine1Txt>
          <CityNm>Philadelphia</CityNm>
          <StateAbbreviationCd>PA</StateAbbreviationCd>
          <ZIPCd>19119</ZIPCd>
        </USAddress>
        <PhoneNum>6109991999</PhoneNum>
      </BooksInCareOfDetail>
      <ForeignFinancialAccountInd>
                            false
                        </ForeignFinancialAccountInd>
      <ForeignOfficeInd>
                            false
                        </ForeignOfficeInd>
      <DonorAdvisedFndsInd>false</DonorAdvisedFndsInd>
      <OperateHospitalInd>false</OperateHospitalInd>
      <TanningServicesProvidedInd>false</TanningServicesProvidedInd>
      <RelatedOrganizationCtrlEntInd>false</RelatedOrganizationCtrlEntInd>
      <TransactionWithControlEntInd>false</TransactionWithControlEntInd>
      <PoliticalCampaignActyInd>false</PoliticalCampaignActyInd>
      <LobbyingActivitiesInd>false</LobbyingActivitiesInd>
      <SchoolOperatingInd>false</SchoolOperatingInd>
      <TrnsfrExmptNonChrtblRltdOrgInd>false</TrnsfrExmptNonChrtblRltdOrgInd>
      <PartVIOfCompOfHghstPdEmplTxt>NONE</PartVIOfCompOfHghstPdEmplTxt>
      <PartVIHghstPdCntrctProfSrvcTxt>NONE</PartVIHghstPdCntrctProfSrvcTxt>
      <FiledScheduleAInd>true</FiledScheduleAInd>
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    <IRS990ScheduleA documentId="990xScheduleA">
      <PublicOrganization170Ind>X</PublicOrganization170Ind>
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        <CurrentTaxYearMinus4YearsAmt>25818</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>14217</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>8479</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>15390</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>30366</CurrentTaxYearAmt>
        <TotalAmt>94270</TotalAmt>
      </GiftsGrantsContriRcvd170Grp>
      <TaxRevLeviedOrgnztnlBnft170Grp></TaxRevLeviedOrgnztnlBnft170Grp>
      <GovtFurnSrvcFcltsVl170Grp></GovtFurnSrvcFcltsVl170Grp>
      <TotalCalendarYear170Grp>
        <CurrentTaxYearMinus4YearsAmt>25818</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>14217</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>8479</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>15390</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>30366</CurrentTaxYearAmt>
        <TotalAmt>94270</TotalAmt>
      </TotalCalendarYear170Grp>
      <PublicSupportTotal170Amt>94270</PublicSupportTotal170Amt>
      <GrossInvestmentIncome170Grp></GrossInvestmentIncome170Grp>
      <UnrelatedBusinessNetIncm170Grp>
        <CurrentTaxYearMinus4YearsAmt>1823</CurrentTaxYearMinus4YearsAmt>
        <TotalAmt>1823</TotalAmt>
      </UnrelatedBusinessNetIncm170Grp>
      <OtherIncome170Grp></OtherIncome170Grp>
      <TotalSupportAmt>96093</TotalSupportAmt>
      <PublicSupportCY170Pct>0</PublicSupportCY170Pct>
      <PublicSupportPY170Pct>0</PublicSupportPY170Pct>
      <GiftsGrantsContrisRcvd509Grp></GiftsGrantsContrisRcvd509Grp>
      <GrossReceiptsAdmissionsGrp></GrossReceiptsAdmissionsGrp>
      <GrossReceiptsNonUnrltBusGrp></GrossReceiptsNonUnrltBusGrp>
      <TaxRevLeviedOrgnztnlBnft509Grp></TaxRevLeviedOrgnztnlBnft509Grp>
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      <Total509Grp></Total509Grp>
      <AmountsRcvdDsqlfyPersonGrp></AmountsRcvdDsqlfyPersonGrp>
      <SubstantialContributorsAmtGrp></SubstantialContributorsAmtGrp>
      <SubstAndDsqlfyPrsnsTotGrp></SubstAndDsqlfyPrsnsTotGrp>
      <PublicSupportTotal509Amt>0</PublicSupportTotal509Amt>
      <GrossInvestmentIncome509Grp></GrossInvestmentIncome509Grp>
      <Post1975UBTIGrp></Post1975UBTIGrp>
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      <NetIncomeFromOtherUBIGrp></NetIncomeFromOtherUBIGrp>
      <OtherIncome509Grp></OtherIncome509Grp>
      <TotalSupportCalendarYearGrp>
        <CurrentTaxYearMinus4YearsAmt>0</CurrentTaxYearMinus4YearsAmt>
        <CurrentTaxYearMinus3YearsAmt>0</CurrentTaxYearMinus3YearsAmt>
        <CurrentTaxYearMinus2YearsAmt>0</CurrentTaxYearMinus2YearsAmt>
        <CurrentTaxYearMinus1YearAmt>0</CurrentTaxYearMinus1YearAmt>
        <CurrentTaxYearAmt>0</CurrentTaxYearAmt>
        <TotalAmt>0</TotalAmt>
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      <InvestmentIncomeCYPct>0</InvestmentIncomeCYPct>
      <InvestmentIncomePYPct>0</InvestmentIncomePYPct>
      <Form990SchAType3FuncIntGrp></Form990SchAType3FuncIntGrp>
    </IRS990ScheduleA>
    <IRS990ScheduleO documentId="990xScheduleO">
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Schedule O:</FormAndLineReferenceDesc>
        <ExplanationTxt>Form 990 EZ, Part I, Line 10, Grants: 4/13 - $2,000 to Morris Animal Refuge; 7/1 - $2,000 to Peanut Fund; 10/15 $2,500 Philly TNR program Form 990 EZ Part I, Line 16, Expenses - Parking, Supplies, Feline Vet Services and Admin/PayPal fees. Form 990 EZ, Part II Total Liabilities. Changed from 334 to 2103</ExplanationTxt>
      </SupplementalInformationDetail>
    </IRS990ScheduleO>
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