Complete list of Texas Comptroller Property Tax Forms and Applications click here. Texas Comptroller Property Tax Publications click here.We've created this stepbystep guide on everything you need to know about creating a donation receipt letter for tax purposes. GENERAL INFORMATION: Use this form to claim property tax exemptions pursuant to Tax Code Section 11.18 for property owned on Jan. Are pleased to inform you that upon review of your application for tax exempt status we have determined that you are exempt from Federal income tax. A tax donation letter contains details about the donation, including the date, a description, donor information, and value.