Clearly print or type all information, except signatures. To transfer a vehicle from a seller to a buyer in a private sale, you can use the Vehicle Bill of Sale (PDF) (MV-912).What should you include in your vehicle bill of sale? How to submit this form: Submit this form along with required documents and applicable tax to the county tag office in the county where the primary purchaser. A detailed description of the process of writing a bill of sale when transferring ownership of a car to a buyer. Can I write my bill of sale?