A complete bill of sale includes the full names and addresses of the buyer and seller, a specific description of the item, the sale price, the date of the transaction, and the signatures of both parties. For vehicles, boats, and other titled property, you also need identifying numbers and a written odometer statement. Strong bills of sale go a step further and spell out the condition of the item (either an as-is clause or a written warranty) and confirm that the property is free of liens. Those are the pieces to include in a bill of sale, and the rest of this article walks through each one and the mistakes that most often cause problems later.
The Five Core Elements
Five pieces of information form the backbone of any bill of sale, whether you’re selling a used refrigerator or a tractor.
Full Names and Addresses of Both Parties
Write out the full legal names and current mailing addresses of the buyer and the seller exactly as they appear on each person’s government-issued ID. A name spelled one way on the bill of sale and another way on a driver’s license can create trouble when the buyer tries to register the item or prove ownership. If one side is a business rather than an individual, use the business’s legal name and address along with the name of the person authorized to sign on its behalf.
A Specific Description of the Item
The description should be detailed enough that no one could confuse the item with a similar one. For electronics, appliances, and tools, record the make, model, and serial number. For goods without serial numbers, use plain, concrete detail. “One walnut dining table, 72 inches long, with six matching chairs” is useful; “dining set” is not. If someone read the document aloud in a room full of similar items, they should be able to point to the exact one that was sold.
The Sale Price
State the exact dollar amount the buyer paid. If the item is a gift, write “$0 — gift” rather than leaving the field blank. State agencies often use the price listed on a bill of sale to calculate sales or use tax when the buyer registers the property, and a blank field invites questions and delays. Writing “$1” to help a buyer dodge sales tax tends to backfire: agencies know what vehicles are worth, and a suspiciously low price can trigger a tax assessment at fair market value instead.
The Date of the Sale
Include the date the transaction took place. That date marks the moment ownership and liability shift from the seller to the buyer, which matters if the item is later involved in an accident, a theft claim, or a tax dispute.
Signatures
Both parties sign and date the document. Signatures should match the printed names. When a married couple jointly owns a vehicle being sold, both owners generally need to sign.
What to Add When You’re Selling a Vehicle
Selling a car, truck, motorcycle, or boat triggers requirements beyond the five basics. State motor vehicle agencies need specific identifiers to process a title transfer, and federal law imposes a disclosure obligation on the seller.
Vehicle Identification Number
Every motor vehicle built since 1981 carries a 17-character Vehicle Identification Number stamped into the dashboard and door frame. Copy the VIN onto the bill of sale exactly as it appears on the vehicle. A single transposed character can derail a title transfer. Check it against the existing title before you finish the paperwork. Boats use a Hull Identification Number instead, a 12-character code typically found on the transom.
Make, Model, Year, and Color
List the vehicle’s make, model, year of manufacture, and color. If it has a current license plate, add the plate number and issuing state. These details help the agency match your paperwork to the vehicle in its system.
Odometer Disclosure
Federal law requires a written odometer disclosure every time a motor vehicle changes hands. The seller must record the cumulative mileage shown at the time of sale, or state in writing that the actual mileage is unknown if the odometer has been replaced or is known to be inaccurate.1Office of the Law Revision Counsel. 49 USC 32705 – Disclosure Requirements on Transfer of Motor Vehicles Many states fold this disclosure into the title certificate itself, but repeating it on the bill of sale creates a second layer of documentation.
Honesty matters here. Federal law prohibits tampering with an odometer, installing any device that causes it to register incorrect mileage, and knowingly driving a vehicle with a disconnected odometer.2Office of the Law Revision Counsel. 49 USC 32703 – Prohibited Acts A buyer who proves fraudulent mileage misrepresentation can recover three times their actual damages or $10,000, whichever is greater, plus attorney fees.3Office of the Law Revision Counsel. 49 USC 32710 – Civil Actions by Private Persons
Condition Language: As-Is or Warranty
One of the most useful things a bill of sale can do is state whether the seller is promising anything about the item’s condition. Without clear language, both sides are left guessing if something breaks the week after the sale.
As-Is Clauses
Most private sales use an as-is clause. The language tells the buyer they are taking the item in its current condition, faults included, and the seller is not guaranteeing it will keep working. Under the Uniform Commercial Code, phrases like “as is” or “with all faults” are enough to exclude all implied warranties from the sale.4Legal Information Institute. UCC 2-316 – Exclusion or Modification of Warranties
Private sales are not automatically as-is as a matter of law. The UCC’s implied warranty of merchantability applies only when the seller is a merchant dealing in that type of goods, so a private seller doesn’t carry that one to begin with.5Legal Information Institute. UCC 2-314 – Implied Warranty: Merchantability; Usage of Trade Other implied warranties, such as fitness for a particular purpose, can still arise if the buyer relied on the seller’s advice about what the item could do. An explicit as-is clause removes any ambiguity.
Written Warranties
If the seller wants to stand behind the item, the warranty needs to be in writing, with specifics: what is covered, what is not, and for how long. A vague promise during negotiation like “it’s in great shape” will not carry the same weight as a line in the bill of sale that reads, for example, “seller warrants the engine is free from mechanical defects for 60 days from the date of sale.” Specific language gives both parties a clear reference point if a problem comes up.
A Lien-Free Statement
Under the UCC, every sale of goods already carries an implied warranty that the seller owns the item and that it is free from any liens or security interests the buyer doesn’t know about.6Legal Information Institute. UCC 2-312 – Warranty of Title and Against Infringement; Buyers Obligation Against Infringement Putting the warranty in writing anyway does two things. It forces the seller to think about whether any outstanding loans attach to the property, and it gives the buyer explicit language to point to if a creditor later shows up claiming an interest.
For vehicles, the title will show any recorded liens, and the bill of sale should include a seller statement that the vehicle is free and clear. If a lien does exist, the document should say the seller will satisfy it as part of the transaction. Buying a vehicle with an outstanding loan against it is one of the fastest ways to lose both the vehicle and your money, because the lender’s claim typically survives the sale.
Notarization
Some states require the bill of sale or related title documents to be notarized, particularly for vehicle and boat transfers. A notary verifies the identities of the people signing and adds a seal, making it much harder for either side to later deny participating in the sale. Even when notarization isn’t required, it adds credibility, which can matter on high-value items where a dispute is more likely to reach a courtroom. In states that cap notary fees by statute, the ceiling typically falls between $2 and $25 per signature.
What a Bill of Sale Does Not Do
A bill of sale and a certificate of title serve different purposes. The bill of sale is proof of the transaction: it shows that money changed hands and identifies what was sold. The title, issued by a state agency, is proof of legal ownership. For titled property such as cars and boats, you need both. The title transfers ownership through the state; the bill of sale documents the terms of the deal.
If a seller refuses to sign over the title, walk away. A bill of sale alone will not let you register a vehicle in most states, and you can end up owning something you cannot legally drive. For property that doesn’t carry a government-issued title (furniture, equipment, livestock, tools), the bill of sale is usually the strongest ownership evidence you’ll have, which is all the more reason to fill it out completely.
Mistakes That Cause Problems Later
The most common bill-of-sale failure is skipping it entirely. In a handshake deal between friends, writing nothing down feels natural, but it leaves both sides exposed. The buyer can’t prove what they paid or what the seller said about the item’s condition. The seller can’t prove they transferred ownership, which means they could still get a parking ticket, a toll bill, or an accident report tied to a vehicle they no longer have.
Other recurring mistakes: leaving the price field blank, using a fake low price to help a buyer avoid tax, misspelling a name so it doesn’t match an ID, and copying the VIN carelessly. Each of these creates work for the buyer at the registration counter, or worse, a legal problem for the seller down the line. Fill in every field, double-check the numbers, and give each party a signed copy to keep with their financial records.