Customers placing orders in TXShop are prompted during checkout to state whether or not they are tax exempt. If a customer indicates that they are not tax exempt, then sales tax is charged.

Customers who are paying with departmental funds (i.e., state funds) are not subject to sales tax. Tax-exempt customers are required to complete a tax-exemption questionnaire during the checkout process, and may be required to submit a paper copy exemption certificate if one is not already on file at the University.