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    <periodOfReport>2022-02-23</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001868778</issuerCik>
        <issuerName>Informatica Inc.</issuerName>
        <issuerTradingSymbol>INFA</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001877931</rptOwnerCik>
            <rptOwnerName>Sekharan Ansa</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2100 SEAPORT BOULEVARD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>REDWOOD CITY</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94063</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP &amp; Chief Customer Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

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                <value>Class A Common Stock</value>
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                <value></value>
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            <expirationDate>
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            <underlyingSecurity>
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                </underlyingSecurityTitle>
                <underlyingSecurityShares>
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        <derivativeTransaction>
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                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
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                <transactionPricePerShare>
                    <value>0.00</value>
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            <exerciseDate>
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            <expirationDate>
                <value>2028-02-29</value>
            </expirationDate>
            <underlyingSecurity>
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                    <value>Class A Common Stock</value>
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                <underlyingSecurityShares>
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        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (right to buy)</value>
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                <value>20.00</value>
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            <transactionDate>
                <value>2022-02-23</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>90000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
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            <exerciseDate>
                <footnoteId id="F6"/>
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            <expirationDate>
                <value>2030-05-11</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>90000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
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                <sharesOwnedFollowingTransaction>
                    <value>90000</value>
                </sharesOwnedFollowingTransaction>
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                    <value>D</value>
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        <derivativeTransaction>
            <securityTitle>
                <value>Stock Option (right to buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
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            </conversionOrExercisePrice>
            <transactionDate>
                <value>2022-02-23</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>30000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
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            <exerciseDate>
                <footnoteId id="F7"/>
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            <expirationDate>
                <value>2031-02-16</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>30000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
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                <sharesOwnedFollowingTransaction>
                    <value>30000</value>
                </sharesOwnedFollowingTransaction>
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    <footnotes>
        <footnote id="F1">Each share is represented by a Restricted Stock Unit (&quot;RSU&quot;). One sixteenth (1/16th) of the total number of RSUs subject to this award will be scheduled to vest on each of the sixteen (16), consecutive Quarterly Vesting Dates that occur on or immediately following the date that is three (3) months after February 23, 2022 (the &quot;Vesting Commencement Date&quot;) (on the same day of the month as the Vesting Commencement Date or if there is no corresponding day in such third month, on the last day of such month), in each case subject to the Reporting Person continuing to be a Service Provider through the applicable vesting date. A &quot;Quarterly Vesting Date&quot; means February 15, May 15, August 15, and November 15 with respect to any calendar year.</footnote>
        <footnote id="F2">Includes previously reported RSUs.</footnote>
        <footnote id="F3">This performance-based stock option was granted on January 24, 2017.  On February 23, 2022, the Company's board of directors certified partial achievement (77%) of the goal based on performance to date and amended the option to provide that 77% of the shares (91,161 shares) covered by the option shall vest over three years, of which 33% shall vest on October 27, 2022 and 8.375% shall vest quarterly thereafter, subject to the Reporting Person remaining in continuous service through each vesting date.  The performance period for achievement of the full performance goal remains intact and all shares will vest on achievement of the goal (assuming continued employment through goal achievement).</footnote>
        <footnote id="F4">This performance-based stock option was granted on November 1, 2017.  On February 23, 2022, the Company's board of directors certified partial achievement (77%) of the goal based on performance to date and amended the option to provide that 77% of the shares (22,935 shares) covered by the option shall vest over three years, of which 33% shall vest on October 27, 2022 and 8.375% shall vest quarterly thereafter, subject to the Reporting Person remaining in continuous service through each vesting date.  The performance period for achievement of the full performance goal remains intact and all shares will vest on achievement of the goal (assuming continued employment through goal achievement).</footnote>
        <footnote id="F5">This performance-based stock option was granted on March 1, 2018.  On February 23, 2022, the Company's board of directors certified partial achievement (77%) of the goal based on performance to date and amended the option to provide that 77% of the shares (57,750 shares) covered by the option shall vest over three years, of which 33% shall vest on October 27, 2022 and 8.375% shall vest quarterly thereafter, subject to the Reporting Person remaining in continuous service through each vesting date.  The performance period for achievement of the full performance goal remains intact and all shares will vest on achievement of the goal (assuming continued employment through goal achievement).</footnote>
        <footnote id="F6">This performance-based stock option was granted on May 12, 2020.  On February 23, 2022, the Company's board of directors certified partial achievement (77%) of the goal based on performance to date and amended the option to provide that 77% of the shares (69,300 shares) covered by the option shall vest over three years, of which 33% shall vest on October 27, 2022 and 8.375% shall vest quarterly thereafter, subject to the Reporting Person remaining in continuous service through each vesting date.  The performance period for achievement of the full performance goal remains intact and all shares will vest on achievement of the goal (assuming continued employment through goal achievement).</footnote>
        <footnote id="F7">This performance-based stock option was granted on February 17, 2021.  On February 23, 2022, the Company's board of directors certified partial achievement (77%) of the goal based on performance to date and amended the option to provide that 77% of the shares (23,100 shares) covered by the option shall vest over three years, of which 33% shall vest on October 27, 2022 and 8.375% shall vest quarterly thereafter, subject to the Reporting Person remaining in continuous service through each vesting date.  The performance period for achievement of the full performance goal remains intact and all shares will vest on achievement of the goal (assuming continued employment through goal achievement).</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Bridget Logterman, Attorney-in-fact</signatureName>
        <signatureDate>2022-02-25</signatureDate>
    </ownerSignature>
</ownershipDocument>
