The proof of sale for a vehicle from a dealer is the Retail Certificate of Sale (MV-50) ("Dealer's Bill of Sale"). 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.Streamline your transactions effortlessly. Edit and download our New York-specific bill of sale template to simplify your property or vehicle transfers. How to fill out the Vehicle Bill of Sale New York State? Get a bill of sale in New York to be used for any vehicle, horse or general bill of sale record. Forms. The New York Bill of Sale form is crucial for ensuring the accurate documentation of the sale and transfer of ownership of property with state regulations. Find out more on a New York bill of sale and how to fill it out. A New York motor vehicle bill of sale form (Form MV-912) is a legal document between the seller and the buyer used to transfer legal ownership of your car. Form was filled out and downloaded 1,113 times already.