Clearly print or type all information, except signatures. A New York motor vehicle bill of sale provides proof that a motor vehicle has been legally sold and acquired in the State of New York.Protect your interests when buying or selling a vehicle in New York. Save time and stress with our vehicle bill of sale template. The proof of sale for a vehicle from a dealer is the Retail Certificate of Sale (MV-50) ("Dealer's Bill of Sale"). Motor Vehicle Bill of Sale A written record indicating the completion of a vehicle transaction. A bill of sale should be completed at the time of sale or after both the buyer and seller have completed the exchange. Create Document. PDF. Use our NY bill of sale forms to prove the transfer of ownership of property from seller to buyer in the state of New York. Learn about New York bills of sale for vehicles, boats, firearms, and more.