-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 royYrJps9xbFRArK/nlX7g==

<SEC-DOCUMENT>0001209191-07-060406.txt : 20071030
<SEC-HEADER>0001209191-07-060406.hdr.sgml : 20071030
<ACCEPTANCE-DATETIME>20071030123247
ACCESSION NUMBER:		0001209191-07-060406
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20071029
FILED AS OF DATE:		20071030
DATE AS OF CHANGE:		20071030

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			ERICKSON JOHN D
		CENTRAL INDEX KEY:			0001191483

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-00368
		FILM NUMBER:		071198621

	MAIL ADDRESS:	
		STREET 1:		215 S CASCADE ST
		CITY:			FERGUS FALLS
		STATE:			MN
		ZIP:			56537

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			OTTER TAIL CORP
		CENTRAL INDEX KEY:			0000075129
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC SERVICES [4911]
		IRS NUMBER:				410462685
		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:		8664108780

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

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	OTTER TAIL POWER CO
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2007-10-29</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000075129</issuerCik>
        <issuerName>OTTER TAIL CORP</issuerName>
        <issuerTradingSymbol>OTTR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001191483</rptOwnerCik>
            <rptOwnerName>ERICKSON JOHN D</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>President &amp; CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2007-10-29</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>6500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>35.84</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>6500</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Shares of Common Stock acquired under the Corporation's Stock Incentive Plan, which is a grant of Restricted Stock.  The 6,500 shares granted 10/29/07 have a FMV of $35.84 and vest at 25% yearly beginning 4/8/08.  See below for other holdings:
1.  Direct holding of 6,144 shares of Common Stock held as Performance Award.
2.  Direct holding of 112.0830 shares of Common Stock held jointly with his wife in the Dividend Reinvestment Plan.
3.  Direct holding of 8,252.7098 shares of Common Stock held in the Employee Stock Purchase Plan.
4.  Direct holding of 46,245 shares of Common Stock which no longer carries the restriction.
5.  Indirect holding of 4,981.7916 shares of Common Stock held by ESOP.
6.  16,000 stock options with expiration date of 2/23/2009.
7.  25,000 stock options with expiration date of 4/10/2010.
8.  75,000 stock options with expiration date of 4/9/2011.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/  John D Erickson by Debra J Lill -POA</signatureName>
        <signatureDate>2007-10-30</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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