-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 GaqGEM7ZdZuCFVR8BEAs4OuSri6o2o8klrkdfWpTbpntgut18lcF9SWS4XV7mqQG
 nIgwz6TVttJRyruTa5Ajeg==

<SEC-DOCUMENT>0001017951-06-000279.txt : 20060821
<SEC-HEADER>0001017951-06-000279.hdr.sgml : 20060821
<ACCEPTANCE-DATETIME>20060821180501
ACCESSION NUMBER:		0001017951-06-000279
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060818
FILED AS OF DATE:		20060821
DATE AS OF CHANGE:		20060821

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NIC INC
		CENTRAL INDEX KEY:			0001065332
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-MANAGEMENT CONSULTING SERVICES [8742]
		IRS NUMBER:				522077581
		STATE OF INCORPORATION:			CO
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		12 CORPORATE WOODS 10975 BENSON STREET
		STREET 2:		SUITE 390
		CITY:			OVERLAND PARK
		STATE:			KS
		ZIP:			66210

	MAIL ADDRESS:	
		STREET 1:		12 CORPORATE WOODS 10975 BENSON STREET
		STREET 2:		SUITE 390
		CITY:			OVERLAND PARK
		STATE:			KS
		ZIP:			66210

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NATIONAL INFORMATION CONSORTIUM
		DATE OF NAME CHANGE:	19990618

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	NATIONAL INFORMATION CONSORTIUM INC
		DATE OF NAME CHANGE:	19990504

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			NATIONAL INFORMATION CONSORTIUM VOTING TRUST
		CENTRAL INDEX KEY:			0001106136
		STATE OF INCORPORATION:			DE

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-26621
		FILM NUMBER:		061047275

	BUSINESS ADDRESS:	
		STREET 1:		12 CORPORATE WOODS
		STREET 2:		10975 BENSON STREET, SUITE 390
		CITY:			OVERLAND PARK
		STATE:			KS
		ZIP:			66210
		BUSINESS PHONE:		7852965059
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-08-18</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001065332</issuerCik>
        <issuerName>NIC INC</issuerName>
        <issuerTradingSymbol>EGOV</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001106136</rptOwnerCik>
            <rptOwnerName>NATIONAL INFORMATION CONSORTIUM VOTING TRUST</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O JEFFERY S. FRASER, NIC INC.</rptOwnerStreet1>
            <rptOwnerStreet2>10540 SOUTH RIDGEVIEW ROAD</rptOwnerStreet2>
            <rptOwnerCity>OLATHE</rptOwnerCity>
            <rptOwnerState>KS</rptOwnerState>
            <rptOwnerZipCode>66061</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2006-08-18</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>38184</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>5.2</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>21412621</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2006-08-18</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>2416</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>5.21</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>21410205</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>Ross C. Hartley, Trustee</signatureName>
        <signatureDate>2006-08-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----