Yes. Texas sales tax is due when your customer picks up or takes delivery of a taxable item in Texas. You can refund the tax collected to your customer.A foreign entity is transacting business in Texas if it has an office or an employee in Texas or is otherwise pursuing one of its purposes in Texas. The cards provide point-of-sale exemption from sales tax and other similarly imposed taxes throughout the United States. This Standard Document has integrated drafting notes with important explanations and drafting and negotiating tips. Sale of Goods Agreement. Nonprofit organizations must apply for exemption with the Comptroller's office and receive exempt status before making tax-free purchases. In person: Complete and submit the "Tax Sale Bidder Registration" form at the registration table on the day of the Tax Sale. An international sales contract is an agreement between a buyer and a seller that identifies the parties in the transaction, the goods or services being sold. In the example given (i.e.