Trellis Company is a nonprofit 501(c)(3) corporation operating under the Texas Nonprofit Corporation Act and the provisions of Chapter 57 of the Texas Education Code. Trellis Company is exempt from the payment of certain state and federal taxes and can provide a sales tax exemption certificate when applicable.

Vendor Enrollment Program

Through our Vendor Enrollment Program, Trellis tracks vendors interested in providing supplies, equipment, or services to Trellis Company. Enrollment in our vendor database does not guarantee receipt of a solicitation, a purchase order, or a contract. Instead, it offers vendors the opportunity to be considered for Trellis’ business.

To enroll, complete and return our Vendor Enrollment Application. On the second page of the application place an “X” next to the categories of goods and services your firm provides. If your specific goods or services are not listed, please describe them in the blank lines provided.

Mail the completed application to:

Trellis Corporate Procurement
P.O. Box 83100
Round Rock, TX 78683-3100

Or fax to:

Trellis Corporate Procurement
(512) 219-2934

For questions about Trellis’ Corporate Procurement processes or about Trellis’ Vendor Enrollment Program, contact, please contact us at (512) 219-5700 or

General Information

Phone: (800) 252-9743


Phone: (800) 222-6297

Fax: (512) 219-4739

Hours: Monday – Thursday, 8 a.m. to 8 p.m. Central Time, Friday, 8 a.m. to 5 p.m. Central Time

Make a Payment

Make payments online through the myTG portal, or mail checks to:

Trellis Collections
P.O. Box 659602
San Antonio, TX 78265-9602