University in a timely manner, there will be a fee imposed upon the return filing and payment. If the transaction is in error, there will be an additional fee imposed. A state fee of 4.15 per return must be paid, and a 0.14 return processing fee applies. This fee remains in place until you have paid this fee for any return. For additional information about Texas State University for W-9, please visit:. For questions call 972-872‐2260. Send payment to TU911. Send Form W 9-A to: TU911 Request for Taxpayer Identification Number and Certification. Send to TXStateTax, P.O. Box 3500, Austin, TX 78. Texas State University W-9 (Send the W-9 and proof of U.S. Citizenship to: TXStateTax, P.O. Box 3500, Austin, Texas 78 or see TU911 on the web.) Texas State University W-9, Request for Taxpayer Identification Number and Certification, should be sent to: (Send the W-9 and the IRS notice that the taxpayer received a W-9. You should include copies of the notice and W-9.) Tax Specialists' Services All information provided on our website is intended for informational purposes only.