<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

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    <periodOfReport>2022-03-01</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001685040</issuerCik>
        <issuerName>Brighthouse Financial, Inc.</issuerName>
        <issuerTradingSymbol>BHF</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001535490</rptOwnerCik>
            <rptOwnerName>Steigerwalt Eric T</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11225 NORTH COMMUNITY HOUSE ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CHARLOTTE</rptOwnerCity>
            <rptOwnerState>NC</rptOwnerState>
            <rptOwnerZipCode>28277</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President and CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

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                <value>Common Stock</value>
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            </transactionTimeliness>
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            <transactionTimeliness>
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                </transactionShares>
                <transactionPricePerShare>
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            <expirationDate>
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                </underlyingSecurityTitle>
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            </underlyingSecurity>
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        </derivativeTransaction>
        <derivativeTransaction>
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            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
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                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
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                <transactionPricePerShare>
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                </underlyingSecurityTitle>
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            </underlyingSecurity>
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                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
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                <transactionShares>
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                <transactionPricePerShare>
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                    <value>23763</value>
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                    <value>D</value>
                </directOrIndirectOwnership>
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                    <value>37453</value>
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                    <value>0.00</value>
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                    <value>A</value>
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                <footnoteId id="F7"/>
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        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Payout of shares upon vesting of tranches of Restricted Stock Units (&quot;RSUs&quot;) granted in March 2019, March 2020 and March 2021.</footnote>
        <footnote id="F2">Each RSU represents the contingent right to receive one share of Brighthouse Financial, Inc. common stock.</footnote>
        <footnote id="F3">Shares acquired from the payout of the 2019 Performance Share Unit award. The number of shares issued was based on the achievement of performance goals over the 2019-2021 performance period.</footnote>
        <footnote id="F4">Represents vesting of the final tranche of the 2019 RSU award.</footnote>
        <footnote id="F5">Represents vesting of the second of three tranches of the 2020 RSU award.  The final tranche will vest on the first business day in March 2023.</footnote>
        <footnote id="F6">Represents vesting of the first of three tranches of the 2021 RSU award.  The remaining tranches will vest in substantially equal installments on the first business day in March 2023 and 2024.</footnote>
        <footnote id="F7">RSUs awarded in 2022 vest in three substantially equal installments on the first business day in March 2023, 2024 and 2025.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Jacob M. Jenkelowitz, Attorney-in-Fact, on behalf of Eric T. Steigerwalt</signatureName>
        <signatureDate>2022-03-03</signatureDate>
    </ownerSignature>
</ownershipDocument>
