New York requires that you complete a bill of sale whenever you buy or sell a car privately. Vehicles Purchased in a Private Sale.Clearly print or type all information, except signatures. We will be addressing how to fill out a bill of sale form for the sale of a car so let's get started with this guide to filling out a bill of sale form. A variety of free bill of sales templates for a range of items, including vehicles and motorcycles, businesses, equipment, and firearms. Selling or transferring ownership of a car, boat or other item of personal property? Easily create, print, and download a Bill of Sale in minutes. A detailed description of the process of writing a bill of sale when transferring ownership of a car to a buyer. A bill of sale is a legal document that serves as proof of purchase and, in some cases, records a transfer of ownership — in this case, for a vehicle. Create a motorcycle bill of sale form for New York so you can document the details of your transaction and prove ownership transfer.