Texas Tax Code - TAX § 152.069. Registration of Motor Vehicle Using Seller-Financing

(a) The seller of a motor vehicle sold in a seller-financed sale shall apply for the registration of, and a Texas certificate of title for, the motor vehicle in the name of the purchaser to the appropriate county tax assessor-collector not later than the 45th day after the date the motor vehicle is delivered to the purchaser.

(b) The seller shall provide to the county tax assessor-collector a joint statement as prescribed by Section 152.062 in lieu of the motor vehicle sales tax imposed by Section 152.021.  The statement shall include the seller's permit identification number issued by the comptroller.