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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2015-01-31</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000839533</issuerCik>
        <issuerName>DEUTSCHE MUNICIPAL INCOME TRUST</issuerName>
        <issuerTradingSymbol>KTF</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000911421</rptOwnerCik>
            <rptOwnerName>PARTNERRE LTD</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>90 PITTS BAY RD.</rptOwnerStreet1>
            <rptOwnerStreet2>WELLESLEY HOUSE</rptOwnerStreet2>
            <rptOwnerCity>PEMBROKE</rptOwnerCity>
            <rptOwnerState>D0</rptOwnerState>
            <rptOwnerZipCode>HM08</rptOwnerZipCode>
            <rptOwnerStateDescription>BERMUDA</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001643270</rptOwnerCik>
            <rptOwnerName>Partner Reinsurance Co Ltd.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>90 PITTS BAY RD.</rptOwnerStreet1>
            <rptOwnerStreet2>WELLESLEY HOUSE</rptOwnerStreet2>
            <rptOwnerCity>PEMBROKE</rptOwnerCity>
            <rptOwnerState>D0</rptOwnerState>
            <rptOwnerZipCode>HM08</rptOwnerZipCode>
            <rptOwnerStateDescription>BERMUDA</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001599479</rptOwnerCik>
            <rptOwnerName>PartnerRe Principal Finance Inc.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ONE GREENWICH PLAZA</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>GREENWICH</rptOwnerCity>
            <rptOwnerState>CT</rptOwnerState>
            <rptOwnerZipCode>06830</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Call Option (right to buy)</value>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>5000.00</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2015-04-01</value>
            </exerciseDate>
            <expirationDate>
                <value>2015-04-01</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Floating Rate Municipal Term Preferred Shares, Series 2015</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>37773</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Subsidiary</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Put Option (obligation to buy)</value>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>5000.00</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2015-01-21</value>
            </exerciseDate>
            <expirationDate>
                <value>2015-03-31</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Floating Rate Municipal Term Preferred Shares, Series 2015</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>37773</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Subsidiary</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">On January 16, 2015, Partner Reinsurance Company Ltd. (&quot;PRC&quot;), a wholly owned direct subsidiary of PartnerRe Ltd., and Citibank N.A. (&quot;Citibank&quot;) entered into a Put/Call Agreement (the &quot;Put/Call Agreement&quot;), by which, among other things, (i) PRC granted Citibank an option (exercisable between January 21, 2015 and March 31, 2015) (the &quot;Put Option&quot;) to cause PRC to purchase the Floating Rate Municipal Term Preferred Shares, Series 2015 (the &quot;MTPS Shares&quot;) from Citibank at the option price of $5,000 per share plus accumulated but unpaid dividends (the &quot;Option Price&quot;); and (ii) Citibank granted PRC an option (exercisable on April 1, 2015)  (the &quot;Call Option&quot;) to cause Citibank to sell the MTPS Shares to PRC at the Option Price.</footnote>
        <footnote id="F2">The reporting persons became beneficial  owners of the reported securities within the meaning of Rule 16a-1(a)(1) under the Securities Exchange Act of 1934 (the &quot;Exchange Act&quot;) on January 31, 2015, which  is the date that is sixty days prior to April 1, 2015, the date on which the Call Option became exercisable.  PartnerRe Principal Finance Inc., a wholly owned indirect subsidiary of PartnerRe Ltd., acts as investment adviser for PRC. PartnerRe Principal Finance Inc. does not beneficially own any of the reported securities within the meaning of Rule 16a-1(a)(2) under the Exchange Act.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/C. Marc Wetherhill, Chief Legal Counsel</signatureName>
        <signatureDate>2015-05-27</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/C. Marc Wetherhill, General Counsel &amp; Chief Compliance Officer</signatureName>
        <signatureDate>2015-05-27</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>/s/TK Khan, General Counsel</signatureName>
        <signatureDate>2015-05-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
