Texas Comptroller of Public Accounts

Texas Comptroller of Public Accounts, Glenn Hegar

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EDI for Sales and Use Tax

Save time and money by using Electronic Data Interchange (EDI) to file your tax information. EDI is a fast and efficient standard for communicating business data electronically. EDI is designed for businesses reporting large number of outlets, leases, schedules or authorities.

The Comptroller's office provides software to monthly and quarterly taxpayers for filing sales tax returns electronically.

What the Software Does

The program enables you to enter your tax data and create a file in approved EDI format. The software cannot be used to print out returns and mail them to us in lieu of the preprinted form.

Requirements for using version 6.1

Minimum system requirements:
166Mhz PC
Windows NT, XP, 2000, 2003, and 7
60 MB of hard drive space
Internet access

To file a return using this software you must complete the testing process to receive an approval email from this office to file electronically.

Downloading and Installing

Download and read the Sales Tax Quick Reference Guide (PDF, 860KB) for detailed instructions. You will need Adobe Acrobat Reader to view or print the user's guide.

  • Important Notice: Users Should Save a Copy of Their Databases Prior to Upgrading EDI Software.
    • For Version 6.0, Stax6.db is located in C:\ProgramData\TexasCPA\Stax6
    • For Version 5.0, Stax5.db is located in C:\STAX5
  • Download the free software (EXE, 26.2 MB) to your Desktop or a folder of your choice.
  • Quit all Windows applications before installing the software.
  • Once the download is complete, go to the Desktop or open the folder in which you saved the software and double click on the staxfull.exe file to install the software.
  • Follow the screen prompts until the installation is complete.

Entering Data and Filing Your Tax

The Sales Tax Quick Reference Guide (PDF, 860KB) contains complete instructions.

The software includes a help system that works best with Internet Explorer 4.0 or greater. You can download the latest version of Internet Explorer from Microsoft's Web site.

Transmit your completed EDI file to the Comptroller via the Web.

Keeping Your Tax Rate Files Up-to-Date

Sales tax rates change periodically as taxing authorities (cities, counties, mass transit authorities and special purpose districts) adopt, reduce or eliminate local taxes. These changes become effective quarterly. To ensure that your balances and billings are computed correctly, you must download the current tax rates.

Support Higher Education

You can contribute all or part of your timely filing discount to the TEXAS Grant and Teach for Texas Loan Repayment Assistance Programs. To contribute, mail the contribution form (PDF, 33 KB) with your donation. If you do not have Adobe Acrobat Reader, you can download the latest version to view and print this form.

For More Information

Email us at etf.cpa@cpa.state.tx.us or

Call us at 1-800-442-3453 or

Fax us at 512-936-0008 or

Mail your request to

Account Maintenance Division
Electronic Reporting
P.O. Box 13528
Austin, Texas 78711-3528

Related Electronic Filing Links

Required Plug-ins

In 2015, the Texas Legislature passed House Bill 855, which requires state agencies to publish a list of the three most commonly used Web browsers on their websites. The Texas Comptroller’s most commonly used Web browsers are Microsoft Internet Explorer, Google Chrome and Apple Safari.