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 also verifies the sale and key vehicle data. 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. Grab a motor vehicle bill of sale for massachusetts. Even if your sales transaction does not require a bill of sale, you should consider completing one.