To claim a tax exemption on qualifying items, you must apply for an agricultural and timber registration number (Ag/Timber Number) from the Comptroller. You must include the Ag/Timber Number on the agricultural exemption certificate (PDF) or the timber exemption certificate (PDF) when buying qualifying items.
Ag/Timber Number Expiration Dates
Ag/Timber Numbers must be renewed every four years, regardless of when the number was first issued. Renewed and new Ag/Timber Numbers expire Dec. 31, 2027.
You must enter the expiration date on the exemption certificate you give to retailers on your qualifying purchases. If you already have an exemption certificate on file that includes your Ag/Timber Number, you can add the expiration date to the exemption certificate and initial it for the retailer’s records. What You Need Before You Apply.
- Basic information about your business (such as its name, description and address)
- Social Security number (if you do not qualify for a Social Security number, you must apply by mail and include your national identification number and country of origin on the application)
- If your business is registered with the Texas Secretary of State (SOS), your SOS file number (find your file number using our Taxable Entity Search)
Apply Online or Mail
If you don’t already have an eSystems/Webfile account with us, you must first register to create a secure online profile. Otherwise, log on as a returning user. The application takes about 10 minutes to complete. No signature is required, and we will issue your Ag/Timber Number at the end of the application process.
We will mail you a confirmation letter five to seven business days after you complete the online application. In the meantime, you can view and print a copy of your confirmation letter (using Adobe Acrobat Reader) upon completing the registration process or write down your Ag/Timber Number. You can also look up your registration information at any time.
You can print the application (PDF) and mail the paper version to us. Allow three to four weeks for processing time.
Additionally, you can call our Fax on Demand service at 800-531-1441, or call 800-252-5555 to ask for an application to be mailed to you.