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    <ReturnTs>2026-03-07T16:29:13-08:00</ReturnTs>
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    <ReturnTypeCd>990EZ</ReturnTypeCd>
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      <BusinessName>
        <BusinessNameLine1Txt>IWFS Marin Inc</BusinessNameLine1Txt>
      </BusinessName>
      <BusinessNameControlTxt>IWFS</BusinessNameControlTxt>
      <PhoneNum>4153326937</PhoneNum>
      <USAddress>
        <AddressLine1Txt>PO Box 987</AddressLine1Txt>
        <CityNm>Sausalito</CityNm>
        <StateAbbreviationCd>CA</StateAbbreviationCd>
        <ZIPCd>94965</ZIPCd>
      </USAddress>
    </Filer>
    <BusinessOfficerGrp>
      <PersonNm>Jack B Rubyn</PersonNm>
      <PersonTitleTxt>Chairman</PersonTitleTxt>
      <PhoneNum>4152504240</PhoneNum>
      <SignatureDt>2026-03-07</SignatureDt>
    </BusinessOfficerGrp>
    <IRSResponsiblePrtyInfoCurrInd>true</IRSResponsiblePrtyInfoCurrInd>
    <TaxYr>2024</TaxYr>
    <BuildTS>2025-03-06 01:10:19Z</BuildTS>
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      <WebsiteAddressTxt>www.iwfsmarin.org</WebsiteAddressTxt>
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      <GrossReceiptsAmt>70270</GrossReceiptsAmt>
      <InfoInScheduleOPartIInd>X</InfoInScheduleOPartIInd>
      <ProgramServiceRevenueAmt>65765</ProgramServiceRevenueAmt>
      <MembershipDuesAmt>4500</MembershipDuesAmt>
      <InvestmentIncomeAmt>5</InvestmentIncomeAmt>
      <CostOrOtherBasisExpenseSaleAmt>0</CostOrOtherBasisExpenseSaleAmt>
      <FundraisingGrossIncomeAmt>0</FundraisingGrossIncomeAmt>
      <SpecialEventsDirectExpensesAmt>0</SpecialEventsDirectExpensesAmt>
      <CostOfGoodsSoldAmt>0</CostOfGoodsSoldAmt>
      <TotalRevenueAmt>70270</TotalRevenueAmt>
      <GrantsAndSimilarAmountsPaidAmt>2960</GrantsAndSimilarAmountsPaidAmt>
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      <TotalExpensesAmt>95551</TotalExpensesAmt>
      <ExcessOrDeficitForYearAmt>-25281</ExcessOrDeficitForYearAmt>
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      <NetAssetsOrFundBalancesEOYAmt>246769</NetAssetsOrFundBalancesEOYAmt>
      <InfoInScheduleOPartIIInd>X</InfoInScheduleOPartIIInd>
      <CashSavingsAndInvestmentsGrp>
        <BOYAmt>42397</BOYAmt>
        <EOYAmt>21338</EOYAmt>
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      <PrimaryExemptPurposeTxt>Promote understanding of wine.</PrimaryExemptPurposeTxt>
      <ProgramSrvcAccomplishmentGrp>
        <DescriptionProgramSrvcAccomTxt>The organization holds events during the fiscal year which are organized to promote an understanding and appreciation of the history and production of wine and food from throughout the world and provide opportunities for the members to socialize with one another in pursuing the foregoing educational and appreciation objective.</DescriptionProgramSrvcAccomTxt>
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        <PersonNm>Jack B Rubyn</PersonNm>
        <TitleTxt>Chairman</TitleTxt>
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        <CompensationAmt>0</CompensationAmt>
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        <PersonNm>Simone Rubyn</PersonNm>
        <TitleTxt>Director</TitleTxt>
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      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Howard Garfield Esq</PersonNm>
        <TitleTxt>Secretary</TitleTxt>
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        <CompensationAmt>0</CompensationAmt>
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      <OfficerDirectorTrusteeEmplGrp>
        <PersonNm>Carol Nimelstein</PersonNm>
        <TitleTxt>Treasurer</TitleTxt>
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      <GrossReceiptsForPublicUseAmt>0</GrossReceiptsForPublicUseAmt>
      <TaxImposedUnderIRC4911Amt>0</TaxImposedUnderIRC4911Amt>
      <TaxImposedUnderIRC4912Amt>0</TaxImposedUnderIRC4912Amt>
      <TaxImposedUnderIRC4955Amt>0</TaxImposedUnderIRC4955Amt>
      <TaxImposedOnOrganizationMgrAmt>0</TaxImposedOnOrganizationMgrAmt>
      <TaxReimbursedByOrganizationAmt>0</TaxReimbursedByOrganizationAmt>
      <ProhibitedTaxShelterTransInd>false</ProhibitedTaxShelterTransInd>
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        <PersonNm>Jack B Rubyn</PersonNm>
        <USAddress>
          <AddressLine1Txt>1207 Bridgeway Suite E</AddressLine1Txt>
          <CityNm>Sausalito</CityNm>
          <StateAbbreviationCd>CA</StateAbbreviationCd>
          <ZIPCd>949651953</ZIPCd>
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      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other Expenses.1</FormAndLineReferenceDesc>
        <ExplanationTxt>Wine Event Costs $69782</ExplanationTxt>
      </SupplementalInformationDetail>
      <SupplementalInformationDetail>
        <FormAndLineReferenceDesc>Other Expenses.2</FormAndLineReferenceDesc>
        <ExplanationTxt>Cellar Rent $10746</ExplanationTxt>
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        <ExplanationTxt>Insurance $6302</ExplanationTxt>
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        <FormAndLineReferenceDesc>Other Expenses.4</FormAndLineReferenceDesc>
        <ExplanationTxt>Credit Card Fees $2205</ExplanationTxt>
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        <ExplanationTxt>Storage - Archive $1704</ExplanationTxt>
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        <ExplanationTxt>Telphone/Web Hosting $600</ExplanationTxt>
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        <ExplanationTxt>Inventories - Beginning $231527 Inventories - Ending $225455</ExplanationTxt>
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