Clearly print or type all information, except signatures. Find out what documents you will need to provide proof of sale and ownership if you are buying, selling, or gifting a vehicle.Both the seller and buyer of a vehicle are required to fill out a Car Sale Agreement to ensure a clear, legal, and mutually agreed-upon transaction. Write out your own full name, and that of the buyer. This template provides a structured framework to document the sale, transfer ownership, and comply with New York regulations. You can come up with your own contract with specific terms. Ensure compliance with New York State's latest requirements with our updated Bill of Sale Agreements. Ships from United States. Question: Do you mean the contract you as the wholesaler would sign with the seller? The so-called "Purchase and Sale" agreement?