Grab a motor vehicle bill of sale for massachusetts. Provides massachusetts bill of sale forms for all your bill of sale needs, including bill of sale forms for the sale of an auto, boat, motocycle, horse or other from of personal property. This form outlines vital information including the purchase price, vehicle details, and the buyer's and seller's signatures, ensuring that the transaction is. All vehicles must have a certificate of title issued by the registry of motor vehicles (rmv) and must be properly endorsed at the time of sale. A bill of sale adds protection for the seller, providing supporting documentation for release of liability, and the buyer by acting as a receipt and proof of purchase.