To transfer a vehicle from a seller to a buyer in a private sale, you can use the Vehicle Bill of Sale (PDF) (MV-912). Use this free form for private transactions.It comes in a printable PDF format, and you can quickly fill it out using your completer. What information do I need to complete a bill of sale? Clearly print or type all information, except signatures. A New York Trailer Bill of Sale helps streamline the registration process and proves the transfer of ownership if a dispute arises. 1. Gather the names and addresses of both the buyer and seller.