<SEC-DOCUMENT>0001209191-17-048031.txt : 20170808
<SEC-HEADER>0001209191-17-048031.hdr.sgml : 20170808
<ACCEPTANCE-DATETIME>20170808092853
ACCESSION NUMBER:		0001209191-17-048031
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20170804
FILED AS OF DATE:		20170808
DATE AS OF CHANGE:		20170808

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Egan Christopher
		CENTRAL INDEX KEY:			0001640491

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-37470
		FILM NUMBER:		171013463

	MAIL ADDRESS:	
		STREET 1:		75 STATE STREET
		STREET 2:		29TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02109

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TransUnion
		CENTRAL INDEX KEY:			0001552033
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-CONSUMER CREDIT REPORTING, COLLECTION AGENCIES [7320]
		IRS NUMBER:				611678417
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		555 WEST ADAMS STREET
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60661
		BUSINESS PHONE:		(312) 985-2000

	MAIL ADDRESS:	
		STREET 1:		555 WEST ADAMS STREET
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60661

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	TransUnion Holding Company, Inc.
		DATE OF NAME CHANGE:	20120612
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2017-08-04</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001552033</issuerCik>
        <issuerName>TransUnion</issuerName>
        <issuerTradingSymbol>TRU</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001640491</rptOwnerCik>
            <rptOwnerName>Egan Christopher</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ADVENT INTERNATIONAL CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>75 STATE STREET, 29TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02109</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2017-08-04</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>201753</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>45.60</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>62129</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Note</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The shares of common stock of the Issuer were sold in connection with a secondary offering of the common stock of the Issuer pursuant to the prospectus supplement (including pursuant to the underwriters' exercise of their over-allotment option under such prospectus supplement), dated July 31, 2017, and accompanying registration statement on Form S-3, dated September 8, 2016.</footnote>
        <footnote id="F2">The shares reported herein are held directly by Advent-TransUnion Acquisition Limited Partnership (&quot;ATUA&quot;).  Each of Advent Partners GPE VI 2008 Limited Partnership (&quot;AP GPE VI 2008&quot;) and Advent Partners GPE VI 2009 Limited Partnership (&quot;AP GPE VI 2009&quot;) hold a partnership interest in ATUA and the Reporting Person is a limited partner of AP GPE VI 2008 and AP GPE VI 2009.  The shares reported herein and directly owned by ATUA may be deemed indirectly owned by the Reporting Person, however, the Reporting Person disclaims beneficial ownership of these securities except to the extent of his respective pecuniary interest therein, if any, and the inclusion of these shares herein shall not be deemed an admission of beneficial ownership of all of the reported shares for purpose of Section 16 or any other purpose.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Richard Terranova, as attorney-in-fact for Christopher Egan</signatureName>
        <signatureDate>2017-08-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
