<SEC-DOCUMENT>0001710879-18-000053.txt : 20180917
<SEC-HEADER>0001710879-18-000053.hdr.sgml : 20180917
<ACCEPTANCE-DATETIME>20180917154426
ACCESSION NUMBER:		0001710879-18-000053
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20180913
FILED AS OF DATE:		20180917
DATE AS OF CHANGE:		20180917

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MILLER BRIAN K
		CENTRAL INDEX KEY:			0001086072

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-10485
		FILM NUMBER:		181073385

	MAIL ADDRESS:	
		STREET 1:		5101 TENNYSON PARKWAY
		CITY:			PLANO
		STATE:			TX
		ZIP:			75024

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TYLER TECHNOLOGIES INC
		CENTRAL INDEX KEY:			0000860731
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				752303920
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		5101 TENNYSON PKWY
		CITY:			PLANO
		STATE:			TX
		ZIP:			75024
		BUSINESS PHONE:		9727133700

	MAIL ADDRESS:	
		STREET 1:		5101 TENNYSON PKWY
		CITY:			PLANO
		STATE:			TX
		ZIP:			75024

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	TYLER CORP /NEW/
		DATE OF NAME CHANGE:	19930328

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	TYLER THREE INC
		DATE OF NAME CHANGE:	19600201
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-09-13</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000860731</issuerCik>
        <issuerName>TYLER TECHNOLOGIES INC</issuerName>
        <issuerTradingSymbol>TYL</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001086072</rptOwnerCik>
            <rptOwnerName>MILLER BRIAN K</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>5101 TENNYSON PARKWAY</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>PLANO</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75024</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Executive VP and CFO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2018-09-13</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>4152</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>249.4802</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>48263</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2018-09-14</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>250.089</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>46763</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Reflects the average sales price for the reported transactions ($249.4802). The shares were sold in multiple transactions at prices ranging from $249.00 to $249.975 inclusive. The reporting person will provide the SEC staff, the Issuer, or any security holder of the Issuer, upon request for same, with the full information regarding the number of shares sold at each separate price within the range specified.</footnote>
        <footnote id="F2">Reflects the average sales price for the reported transactions ($250.089). The shares were sold in multiple transactions at prices ranging from $250.036 to $250.20 inclusive. The reporting person will provide the SEC staff, the Issuer, or any security holder of the Issuer, upon request for same, with the full information regarding the number of shares sold at each separate price within the range specified.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Brian K. Miller</signatureName>
        <signatureDate>2018-09-17</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
