A bill of sale benefits both the seller of a vehicle and the buyer. I Drive Safely will help you understand the importance of a Texas bill of sale.Learn about bill of sale laws and requirements for the state of Texas. Get templates for buying and selling high-value items like cars, boats, and firearms. A motor vehicle bill of sale is between a buyer and a seller of a car, truck, or motorcycle. It is signed as the last step in the sales process. When selling a vehicle, the seller must sign and handprint their name on the proof of ownership document. This blog post is tailored to help you understand how to draft, why it's necessary, and where you can obtain a Texas bill of sale. Step 1: To open the fillable bill of sale for Texas, click the "Fill Out Form" button. ❖ Form MV-1 must be completed and a check or money order payable to the Commonwealth of.