<SEC-DOCUMENT>0001209191-19-030077.txt : 20190515
<SEC-HEADER>0001209191-19-030077.hdr.sgml : 20190515
<ACCEPTANCE-DATETIME>20190515170943
ACCESSION NUMBER:		0001209191-19-030077
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20190514
FILED AS OF DATE:		20190515
DATE AS OF CHANGE:		20190515

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			GRAINGER MICHAEL J
		CENTRAL INDEX KEY:			0001191474

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-26926
		FILM NUMBER:		19829527

	MAIL ADDRESS:	
		STREET 1:		C/O INGRAM MICRO INC WORLD WIDE L
		STREET 2:		1600 E ST ANDREW PLACE
		CITY:			SANTA ANA
		STATE:			CA
		ZIP:			92705

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SCANSOURCE, INC.
		CENTRAL INDEX KEY:			0000918965
		STANDARD INDUSTRIAL CLASSIFICATION:	WHOLESALE-COMPUTER & PERIPHERAL EQUIPMENT & SOFTWARE [5045]
		IRS NUMBER:				570965380
		STATE OF INCORPORATION:			SC
		FISCAL YEAR END:			0630

	BUSINESS ADDRESS:	
		STREET 1:		6 LOGUE COURT
		CITY:			GREENVILLE
		STATE:			SC
		ZIP:			29615
		BUSINESS PHONE:		8642882432

	MAIL ADDRESS:	
		STREET 1:		6 LOGUE COURT
		CITY:			GREENVILLE
		STATE:			SC
		ZIP:			29615

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SCANSOURCE INC
		DATE OF NAME CHANGE:	19940214
</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>2019-05-14</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000918965</issuerCik>
        <issuerName>SCANSOURCE, INC.</issuerName>
        <issuerTradingSymbol>SCSC</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001191474</rptOwnerCik>
            <rptOwnerName>GRAINGER MICHAEL J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>248 KING DAVID'S COURT</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>FRANKLIN</rptOwnerCity>
            <rptOwnerState>TN</rptOwnerState>
            <rptOwnerZipCode>37067</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>2019-05-14</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>4000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>30.69</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>18100</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The price reported in column 4 is the weighted average price. These shares were purchased in multiple transactions at prices ranging from $30.53 to $30.83, inclusive. The reporting person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/Michael J. Grainger</signatureName>
        <signatureDate>2019-05-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
