<SEC-DOCUMENT>0001209191-21-008031.txt : 20210205
<SEC-HEADER>0001209191-21-008031.hdr.sgml : 20210205
<ACCEPTANCE-DATETIME>20210205101422
ACCESSION NUMBER:		0001209191-21-008031
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210203
FILED AS OF DATE:		20210205
DATE AS OF CHANGE:		20210205

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Downs Peter Mathison
		CENTRAL INDEX KEY:			0001624862

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	814-01035
		FILM NUMBER:		21594425

	MAIL ADDRESS:	
		STREET 1:		1440 PINEACRES BLVD
		CITY:			BAY SHORE
		STATE:			NY
		ZIP:			11706

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Newtek Business Services Corp.
		CENTRAL INDEX KEY:			0001587987
		IRS NUMBER:				463755188
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		4800 T REX AVENUE
		STREET 2:		SUITE 120
		CITY:			BOCA RATON
		STATE:			FL
		ZIP:			33431
		BUSINESS PHONE:		212-356-9500

	MAIL ADDRESS:	
		STREET 1:		4800 T REX AVENUE
		STREET 2:		SUITE 120
		CITY:			BOCA RATON
		STATE:			FL
		ZIP:			33431
</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>2021-02-03</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001587987</issuerCik>
        <issuerName>Newtek Business Services Corp.</issuerName>
        <issuerTradingSymbol>NEWT</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001624862</rptOwnerCik>
            <rptOwnerName>Downs Peter Mathison</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>4800 T-REX AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 120</rptOwnerStreet2>
            <rptOwnerCity>BOCA RATON</rptOwnerCity>
            <rptOwnerState>FL</rptOwnerState>
            <rptOwnerZipCode>33431</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Lending Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-02-03</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>11557</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>51388</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">On February 3, 2021, under the Shareholder and Board approved Newtek Business Services Corp. 2015 Stock Incentive Plan, the reporting person was granted 11,557 restricted shares of the Issuer's common stock as a restricted stock award. One-third of the Award will vest on each of the following dates: February 15, 2022; February 15, 2023; and February 15, 2024. Dividends, in the form of common stock, will be paid during the restricted period, and such common stock will also vest pursuant to the vesting schedule.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Peter Downs</signatureName>
        <signatureDate>2021-02-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
