The bill of sale must state the sellers name, the buyers name and the year, make and vehicle identification number and the purchase price of the vehicle. 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. Find Maryland Bill of Sale instructions for the sale of a vehicle, boat, horse, firearm, or other valuable property in the state of Maryland. A Maryland motor vehicle bill of sale (Form VR-181) documents the details surrounding the purchase and sale of a vehicle between two or more parties. Information and Instructions. • Submit this form within 30 days of the vehicle's date of transfer to help protect yourself from liability for criminal. 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.