Bill of Sale for Selling a Car: What It Is and What It Needs to Include
When you sell a car, a bill of sale is the written record of that transaction. It documents who sold what, to whom, for how much, and when. Think of it as a receipt for a private vehicle sale — one that protects both the seller and the buyer if questions arise later.
Unlike a title, which proves ownership, a bill of sale captures the terms of the exchange itself. Many states require one as part of completing a private sale. Others don't mandate it but still recognize it as a legal document if disputes emerge. Either way, completing one is standard practice and generally worth the few minutes it takes.
What a Car Bill of Sale Typically Includes
Most bills of sale for a vehicle cover the same core information, regardless of state:
- Seller's full name and address
- Buyer's full name and address
- Vehicle identification number (VIN)
- Year, make, model, and color of the vehicle
- Odometer reading at time of sale
- Sale price (or notation that it was a gift, if applicable)
- Date of the transaction
- Signatures of both buyer and seller
Some states also require a notary's signature to validate the document. Others ask for a witness. A few have their own official bill of sale forms that must be used — especially when the vehicle is sold at a price that affects how sales tax is calculated at registration.
Why It Matters for Sellers 📋
Once you hand over the keys and the signed title, you want a clear paper trail showing the vehicle changed hands. A bill of sale establishes the exact date ownership transferred. This matters for:
- Liability: If the buyer gets a parking ticket or is involved in an accident before registering the car in their name, the bill of sale helps demonstrate you were no longer the owner at that point.
- Tax records: Some states use the sale price on the bill of sale to calculate sales tax when the buyer registers the vehicle. If you sold at below market value — to a family member, for example — the bill of sale documents that figure.
- Title disputes: If the title transfer runs into complications, the bill of sale serves as supporting evidence of the agreed transaction.
Why It Matters for Buyers
The buyer needs the bill of sale to register the vehicle in their name in most states. It often accompanies the signed title when they visit the DMV. In states where a notarized bill of sale is required, showing up without one can stall the registration process entirely.
For buyers paying cash, it's also the only document they'll have proving what they paid — relevant if the seller later claims a different amount, or if there's ever a question about the transaction.
State-by-State Variation: Where Things Diverge
📍 This is where the details get location-specific. What's required on a bill of sale — and whether the state supplies a standard form — varies considerably.
| What Varies | Examples of How It Differs |
|---|---|
| Required vs. optional | Some states require it; others don't mandate it but accept it |
| Official state form | Some states have a specific DMV form; others accept any written document |
| Notarization | Required in some states, not in others |
| Odometer disclosure | May be a separate form or part of the bill of sale, depending on vehicle age |
| As-is language | Some states expect explicit language noting the vehicle is sold without warranty |
| Sales tax calculation | Some states use the bill of sale price; others use fair market value regardless |
Because of this variation, checking your state's DMV website for a template or requirements before writing anything up is the most reliable starting point.
"As-Is" Sales and What That Language Does
Most private vehicle sales are "as-is" transactions, meaning the seller makes no warranty about the vehicle's condition. Including that language explicitly in the bill of sale — something like "Vehicle sold as-is, with no expressed or implied warranty" — can limit a seller's exposure if the buyer later discovers mechanical problems.
This isn't a magic shield. Fraudulent concealment of known defects is a different matter, and courts have found sellers liable even in as-is sales when the seller actively hid a problem. But for an honest transaction, clear as-is language documents the agreement both parties made.
Odometer Disclosure: Often a Separate Requirement
Federal law requires an odometer disclosure for most vehicles under a certain age (historically 10 years, though regulations have been updated). This disclosure can be part of the bill of sale, printed on the back of the title, or provided on a separate form — it depends on the state and the title document format.
If the odometer is broken or known to be inaccurate, that needs to be noted explicitly. Misrepresenting mileage — even unintentionally — creates legal exposure for sellers.
Keeping Copies
Both parties should keep a signed copy of the bill of sale. For sellers, file it somewhere you can retrieve it for at least a few years. If a toll bill, red-light camera notice, or insurance claim surfaces months after the sale, that document is what you'll reference to show the vehicle was no longer yours.
The bill of sale is a small document, but the work it does — before, during, and after the transaction — is bigger than it looks. What yours needs to say, and whether your state has a specific form or notarization requirement, depends entirely on where you're selling and what you're selling.