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        <issuerName>BlackRock Capital Allocation Trust</issuerName>
        <issuerTradingSymbol>BCAT</issuerTradingSymbol>
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            <rptOwnerName>Rieder Richard M</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>55 EAST 52ND STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10055</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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            <isOfficer>0</isOfficer>
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            <isOther>1</isOther>
            <otherText>Portfolio Manager</otherText>
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    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Janey Ahn as Attorney-in-Fact</signatureName>
        <signatureDate>2021-09-29</signatureDate>
    </ownerSignature>
</ownershipDocument>
