Yes, you need a bill of sale. State the terms and odometer reading on the BOS.A car (vehicle) purchase deposit receipt is written proof that a potential buyer of a car has supplied the seller with a deposit. This form certifies the purchase price and determines the sales tax you must pay when registering the vehicle. What information do I need to complete a bill of sale? Get a bill of sale in New York to be used for any vehicle, horse or general bill of sale record. Forms. Parties: Enter the full names and addresses of both the buyer and the seller. Ensure accuracy in the details to avoid confusion or disputes. Seal vehicle deals securely. Use our free template to create a bill of sale with a promissory note for automobiles.