<SEC-DOCUMENT>0001209191-16-097338.txt : 20160210
<SEC-HEADER>0001209191-16-097338.hdr.sgml : 20160210
<ACCEPTANCE-DATETIME>20160210165641
ACCESSION NUMBER:		0001209191-16-097338
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20160204
FILED AS OF DATE:		20160210
DATE AS OF CHANGE:		20160210

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Otter Tail Corp
		CENTRAL INDEX KEY:			0001466593
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC SERVICES [4911]
		IRS NUMBER:				270383995
		STATE OF INCORPORATION:			MN
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		215 S CASCADE ST
		STREET 2:		PO BOX 496
		CITY:			FERGUS FALLS
		STATE:			MN
		ZIP:			56538-0496
		BUSINESS PHONE:		866-410-8780

	MAIL ADDRESS:	
		STREET 1:		215 S CASCADE ST
		STREET 2:		PO BOX 496
		CITY:			FERGUS FALLS
		STATE:			MN
		ZIP:			56538-0496

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Otter Tail Holding Co
		DATE OF NAME CHANGE:	20090618

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			ROGELSTAD TIMOTHY J
		CENTRAL INDEX KEY:			0001605621

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-53713
		FILM NUMBER:		161406452

	MAIL ADDRESS:	
		STREET 1:		215 S CASCADE ST
		CITY:			FERGUS FALLS
		STATE:			MN
		ZIP:			56537-2801
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
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    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2016-02-04</periodOfReport>

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        <issuerName>Otter Tail Corp</issuerName>
        <issuerTradingSymbol>OTTR</issuerTradingSymbol>
    </issuer>

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            <rptOwnerName>ROGELSTAD TIMOTHY J</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>215 S CASCADE ST</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>FERGUS FALLS</rptOwnerCity>
            <rptOwnerState>MN</rptOwnerState>
            <rptOwnerZipCode>56537-2801</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Sr VP, Elect Plat; Pres OTP</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
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                <value>Common Stock</value>
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            <transactionDate>
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            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
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                <equitySwapInvolved>0</equitySwapInvolved>
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                <transactionAcquiredDisposedCode>
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                <sharesOwnedFollowingTransaction>
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                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
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                <natureOfOwnership>
                    <value>ESOP</value>
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            </ownershipNature>
        </nonDerivativeHolding>
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    <derivativeTable>
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            <transactionDate>
                <value>2016-02-04</value>
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            <transactionTimeliness>
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            </transactionTimeliness>
            <transactionAmounts>
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                <transactionPricePerShare>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
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                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>450</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
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                <value>2016-02-06</value>
                <footnoteId id="F1"/>
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            <expirationDate>
                <footnoteId id="F1"/>
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            <underlyingSecurity>
                <underlyingSecurityTitle>
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                </underlyingSecurityTitle>
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            </underlyingSecurity>
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                <sharesOwnedFollowingTransaction>
                    <value>1350</value>
                </sharesOwnedFollowingTransaction>
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                <value>2016-04-08</value>
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            <expirationDate>
                <value>2016-04-08</value>
            </expirationDate>
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                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
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                <sharesOwnedFollowingTransaction>
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                <value>Restricted Stock Units</value>
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                <value>2016-04-08</value>
            </expirationDate>
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                <underlyingSecurityTitle>
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                </sharesOwnedFollowingTransaction>
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                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Restricited Stock Units</value>
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            <conversionOrExercisePrice>
                <footnoteId id="F2"/>
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                <value>2017-04-08</value>
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            <expirationDate>
                <value>2017-04-08</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
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                </sharesOwnedFollowingTransaction>
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        </derivativeHolding>
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    <footnotes>
        <footnote id="F1">The restricted stock units vest in four equal installments beginning February 6, 2016.</footnote>
        <footnote id="F2">Each restricted stock unit represents a contingent right to receive one share of Otter Tail Corporation common stock.</footnote>
        <footnote id="F3">Total direct holdings include shares held in Dividend Reinvestment Plan, shares held jointly with spouse that were acquired through the Employee Stock Purchase Plan and shares acquired pursuant to Restricted Stock Awards, Restricted Stock Units</footnote>
        <footnote id="F4">These shares were withheld by the Corporation to pay taxes due upon vesting of this award, exempt pursuant to Rule 16b-3(e).</footnote>
        <footnote id="F5">The restricted stock units vest in four equal annual installments beginning February 6, 2017.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/Timothy J Rogelstad by Ella J Leapaldt, Attorny-in-Fact</signatureName>
        <signatureDate>2016-02-10</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
