What a Bill of Sale Actually Does

In a private vehicle transaction, there is no dealership processing paperwork on your behalf. That responsibility falls entirely on the buyer and seller — which is why a bill of sale matters. It creates a mutual, signed record of exactly what was agreed: who sold the vehicle, who bought it, for how much, and when.

For the seller, it provides documented evidence that ownership was transferred on a specific date and at a specific price. This matters for liability — if the new owner gets into an accident or accumulates parking tickets after the sale, the seller needs proof the car was no longer theirs. For the buyer, it confirms what was paid and captures any representations made about the vehicle's condition at the time of sale.

A bill of sale also creates a paper trail useful for tax purposes. In many states, the sale price recorded on the bill of sale is used to calculate sales tax when the buyer registers the vehicle. Understating or misrepresenting this figure can create legal problems for both parties.

A Bill of Sale Is Not a Title

It is a common misconception that a bill of sale alone transfers vehicle ownership. It does not. The signed vehicle title — submitted to the appropriate state agency — is what legally changes the name on record. A bill of sale documents the agreement; the title transfer completes the legal change of ownership. Both documents are important, but they serve distinct purposes.

What a Vehicle Bill of Sale Should Include

While formats vary, a complete vehicle bill of sale typically includes the following:

  • Full legal names and addresses of both buyer and seller
  • Vehicle identification number (VIN) — the unique 17-character code identifying the specific vehicle
  • Year, make, model, and color of the vehicle
  • Current odometer reading at the time of sale
  • Sale price — the actual amount exchanged
  • Date of the transaction
  • As-is language — a statement that the buyer accepts the vehicle in its current condition, unless a warranty or specific representations are included
  • Signatures of both parties

Some states provide their own standardized bill of sale forms through the Department of Motor Vehicles (DMV). Using an official form can simplify the process and ensure you meet any local requirements. Check your state's DMV website for guidance before drafting your own document.

Use Your State's Official DMV Form When Available

Many state DMVs provide a standardized vehicle bill of sale form at no cost. These forms are designed to meet local legal requirements and typically prompt you to include all the information your state needs. Using an official form reduces the chance of an omission that could slow down registration or title transfer.

How It Fits Into the Broader Transaction

A bill of sale is one piece of a larger paperwork puzzle. It works alongside — not instead of — the vehicle's title. The title is the government-issued document that legally establishes ownership, and it must be properly signed over and submitted to your state's DMV to complete the transfer. For a plain-language guide to that process, see how vehicle registration and title transfers work.

If you want a detailed look at what title transfer requires from both sides of a deal, Title Transfer 101 walks through what's typically required in most U.S. states.

Private sales differ meaningfully from dealership purchases, where much of this paperwork is handled for you. Understanding those differences can help set expectations before you start. See Private Seller vs. Dealership for a fuller comparison.

Practical Steps for Both Parties

Whether you're the buyer or the seller, a few simple habits make the bill of sale process smoother:

  1. Prepare the document before the meeting. Don't try to fill it out from memory at the last minute. Bring the vehicle's title so VIN and other details can be verified against the physical document.
  2. Make two signed copies. Each party should keep an original. A single copy left with only one person creates an imbalance if a dispute arises later.
  3. Verify the odometer reading together. Both parties should agree on the reading at the moment of sale and record it on the document.
  4. Keep it on file. Sellers should retain their copy for several years. Buyers should keep it until registration is complete and ideally beyond that.

For a broader look at what selling a car privately entails — from pricing and listings through to payment safety — selling your car privately covers the full process in detail.

~40%

Used car sales that happen privately in the U.S.

Industry estimates suggest a substantial share of used vehicle transactions occur between private parties rather than through dealerships, underscoring the importance of proper documentation.

50

U.S. states, each with different bill of sale rules

Requirements for vehicle bills of sale — including whether notarization is required — vary state by state, making it essential to check your local DMV's guidelines.