What an automotive bill of sale is and why you need one

An automotive bill of sale is a written record that documents the transfer of a vehicle from one owner to another. It shows who owned the car, who owns it now, when the transfer happened, and how much was paid. When you buy or sell a car — whether through a dealer, a private party, or a family member — a bill of sale creates proof that the transaction occurred and protects both the buyer and the seller.

The bill of sale is not the same as the vehicle title, which is the legal document that proves ownership and is filed with your state's motor vehicle department. Instead, the bill of sale is a receipt and a record. It sits between the handshake and the paperwork you file with the state. Many states do not legally require a bill of sale, but having one protects you if a dispute arises later — for instance, if the seller claims the car was never actually sold, or if the buyer later says they never agreed to the price.

Key Takeaways

  • A bill of sale documents the sale price, the vehicle details, and the names and signatures of both buyer and seller, and serves as proof the transaction occurred.
  • Most states do not legally require a bill of sale, but having one protects you from disputes and is often needed by your insurance company or lender.
  • You can write a bill of sale yourself using a straightforward template, or read a state-specific form from your motor vehicle department's website.
  • Both the buyer and seller should keep a signed copy, and the buyer should bring their copy when they register the vehicle with the state.

What information goes on a bill of sale

A bill of sale must include the vehicle identification number (VIN), which is a 17-character code unique to that car. You can find the VIN on the dashboard at the base of the windshield on the driver's side, on the vehicle title, or on insurance documents. The bill of sale also needs the make, model, year, and color of the vehicle, and the odometer reading at the time of sale.

Both the buyer and seller must print their full legal names, addresses, and phone numbers. The seller should list the sale price — the actual amount paid, not "as is" or blank. If no money changed hands (for example, if you are gifting the car to a family member), write "gift" or "$0" in the price field. The bill of sale must be dated and signed by both parties. Some states require the signatures to be notarized, meaning a notary public witnesses and stamps the document; check your state's motor vehicle website to see if notarization is required where you live.

How to create a bill of sale

The simplest approach is to read a template from your state's motor vehicle department website. Search "[your state] bill of sale template" or "[your state] motor vehicle department" and look for a downloadable form. Many states provide free, official templates that are already formatted to meet state requirements. If your state does not offer a template, you can write one yourself using a standard format or find a generic template online.

If you write your own, use a word processor or print a blank template and fill it in by hand. Include all the information listed above: VIN, vehicle details, odometer reading, buyer and seller names and addresses, sale price, date, and signature lines. Print two copies — one for the buyer and one for the seller. Both parties should sign both copies in blue or black ink. If notarization is required in your state, take both signed copies to a notary public (often available at banks, libraries, or UPS stores) and have them notarize both versions.

When to sign the bill of sale

The bill of sale should be signed at the time of the sale, ideally before the buyer takes possession of the vehicle. This creates a clear record of when the ownership transfer occurred. If you are buying a car, do not hand over payment or keys until both parties have signed the bill of sale. If you are selling, do not release the keys or title until the bill of sale is signed and you have received payment.

In practice, many private sales happen this way: the buyer and seller meet, inspect the vehicle, agree on a price, fill out the bill of sale together, both sign it, the buyer pays, and the seller hands over the keys and title. The entire process takes 15 to 30 minutes. If you are buying from a dealer, the dealer will usually prepare the bill of sale or a sales contract that serves the same purpose.

What happens after you sign

After both parties sign, each should keep a copy for their records. The buyer should bring their signed copy when they go to register the vehicle with the state motor vehicle department. Registration typically must happen within 10 to 30 days of purchase, depending on your state. The bill of sale is not filed with the state — only the title is — but having the bill of sale on hand speeds up the registration process and proves you own the car.

The seller should keep their copy as proof that they no longer own the vehicle. This is important if the car is later involved in an accident or traffic violation; the bill of sale shows you sold it and are no longer responsible. The buyer should also provide a copy to their insurance company when they insure the vehicle. Most insurers ask for proof of ownership, and the bill of sale plus the title transfer serves that purpose.

Private sales versus dealer sales

When you buy from a private seller, you are responsible for creating or obtaining the bill of sale. The seller may have one ready, or you may need to prepare it yourself using a template. Either way, make sure it is filled out completely and signed by both parties before money changes hands.

When you buy from a licensed dealer, the dealer prepares the paperwork, which usually includes a bill of sale or a sales contract that documents the same information. Dealers are often required by state law to provide this document. You do not need to create one yourself in this case, but you should still receive a signed copy to keep with your records.

Common mistakes to avoid

The most common mistake is leaving the price blank or writing "as is." This creates ambiguity and can cause problems if either party later disputes the sale price. Always write the actual amount paid, even if it is $1 or $0 for a gift. Another mistake is failing to include the VIN or odometer reading. These details tie the bill of sale to the specific vehicle and prevent confusion if either party owns multiple cars.

Do not sign a bill of sale that has blank spaces you have not filled in. Once you sign, you are agreeing to whatever is written, and blank spaces can be filled in later by the other party. Make sure all information is complete and accurate before you sign. If you are buying a car, also verify that the seller's name on the bill of sale matches the name on the vehicle title — if it does not, the seller may not legally own the car and cannot transfer ownership to you.

Frequently Asked Questions

Do I need a bill of sale if I am buying from a dealer?

No, dealers provide a sales contract or bill of sale as part of their standard paperwork. You will receive a copy, and that document serves the same purpose. Keep it with your records and bring it when you register the vehicle.

What if the seller will not sign a bill of sale?

Do not complete the purchase. A seller who refuses to document the sale in writing is a red flag. They may not actually own the vehicle, may have an outstanding loan against it, or may be trying to avoid a record of the transaction. Insist on a signed bill of sale before you hand over money.

Can I use a bill of sale instead of a title transfer?

No. The bill of sale documents the sale, but the title is the legal proof of ownership. You must file a title transfer with your state motor vehicle department to legally own the car. The bill of sale supports that process but does not replace it.

What if I lost my copy of the bill of sale?

Contact the other party and ask for another signed copy. If you cannot reach them, you can still register the vehicle using the title alone, though having the bill of sale makes the process smoother. If you are the seller and need to prove you no longer own the car, ask the buyer for a copy or contact your state motor vehicle department to request a record of the title transfer.

Does the bill of sale need to be notarized?

Notarization is required in some states and not in others. Check your state's motor vehicle department website to find out. If it is required, take both signed copies to a notary public before either party keeps their copy. Notaries are available at banks, libraries, and UPS stores, usually for a small fee.