Quick Summary: A bill of sale is a written record that ownership of an item passed from a seller to a buyer on a specific date for a specific price. It protects the buyer by proving ownership and protects the seller by fixing the moment liability ended. Most states do not require notarization, but a handful do for vehicle transfers — confirm with your DMV before you sign.
Selling a car to a stranger from a classified ad, handing a boat trailer to a neighbor, transferring a tractor between family members: these are the moments a bill of sale earns its keep. It is a one-page document, and the day you need it is the day you are very glad you wrote one.
A bill of sale transfers personal property. Real estate works differently and moves by deed instead — see quitclaim deeds for how property transfers are handled. If the buyer is paying over time rather than all at once, pair the bill of sale with a promissory note.
Quick Answer: What a Bill of Sale Does
A bill of sale is a legal document evidencing the transfer of ownership of personal property from one party to another. It is a receipt with legal teeth.
- Gives the buyer proof of ownership, needed to register titled property and to resell it later
- Gives the seller a dated record that cuts off liability for tickets, tolls, accidents, and storage after the sale
- Documents the price, which most states use to assess sales or use tax on the transfer
- Records the condition terms, typically "as is," limiting later claims about defects
What to Include in a Bill of Sale
| Field | Why it matters |
|---|---|
| Seller name and address | Identifies who transferred ownership and where to reach them |
| Buyer name and address | Identifies the new owner for registration and tax purposes |
| Date of sale | The moment liability shifts — the seller's single most important field |
| Item description | Year, make, model, color, and serial number (VIN or HIN for vehicles and boats) |
| Odometer reading | Required on most vehicle transfers under federal disclosure rules |
| Sale price | Drives the tax the buyer owes; write "$0 — gift" if nothing changed hands |
| Ownership warranty | Seller's statement that they own the item free of liens |
| Condition clause | Usually "as is, where is, with all faults" |
| Signatures | Both parties, dated; plus a notarial certificate if your state requires one |
The Four Types of Bill of Sale
- Absolute. A clean, unconditional transfer. Full payment now, ownership passes immediately, nobody owes anybody anything afterward. The most common form by far.
- Conditional. Ownership transfers only when a condition is met, usually final payment. Used with installment sales, and normally paired with a promissory note setting the payment schedule.
- Quitclaim. The seller transfers whatever interest they have without guaranteeing they have any. Used when title paperwork is missing or ownership history is unclear. Cheap for the seller, risky for the buyer.
- Warranty. The seller affirmatively guarantees clear title and promises to defend the buyer against later ownership claims. The strongest protection a buyer can get.
Bills of Sale by Asset Type
The core fields stay the same; what changes is the identifying detail the state cares about.
- Vehicles. VIN, odometer reading, and title number. Nearly every state publishes a free official form, and using it is the path of least resistance at the DMV counter.
- Boats and trailers. Hull identification number, plus engine serial numbers if the motor transfers with the hull. Boats and trailers are frequently titled separately from each other.
- Firearms. Make, model, caliber, and serial number. Private transfer rules vary sharply by state, and several require a licensed dealer to run a background check.
- Livestock and equipment. Brand, tag, or serial number, plus health or inspection paperwork where the state requires it for animals crossing county or state lines.
- General personal property. Furniture, tools, art, and collectibles need a description specific enough that a stranger could identify the exact item from the page.
Does a Bill of Sale Have to Be Notarized?
For the large majority of private sales in the large majority of states, no. Two signatures make the document effective. Notarization is an option that buys you signature authentication, not a validity requirement.
The exception is vehicle transfers, where a small number of states either require notarization outright or require it when specific conditions apply. These are the states most consistently identified as having a notarization rule:
Verify before you sign. The table below reflects requirements commonly reported for private vehicle sales, not a current reading of each state's statute. These rules are amended regularly. Confirm with the DMV, DOR, or titling agency that will actually process your transfer before the signing appointment.
| State | Commonly reported requirement |
|---|---|
| Louisiana | Notarized bill of sale generally required for private vehicle transfers |
| Nebraska | Notarized bill of sale generally required for private vehicle transfers |
| Maryland | Required only in specific circumstances; the rule has been subject to recent legislative change, so check current guidance |
| West Virginia | Required where the stated sale price falls well below the vehicle's book value |
| Montana | Notarization required or strongly recommended depending on the transfer type |
Beyond the states with a rule, there are practical reasons to notarize voluntarily:
- The item is high value and you want the signature authenticated against a later forgery claim
- The parties are strangers who met through an online marketplace
- The title is missing and the bill of sale is doing more evidentiary work than usual
- The transfer will cross state lines and be processed by an agency unfamiliar with the other state's paperwork
- The sale is between family members at a below-market price that may draw scrutiny
When a bill of sale is notarized, the act is almost always an acknowledgment, which means each signer can sign before the appointment and simply appear to acknowledge the signature. Every signer whose name appears on the certificate has to appear personally with valid ID.
What "As Is" Really Covers
The phrase "sold as is, where is, with all faults" tells the buyer they are accepting the item in its present state and that the seller warrants nothing about condition. In a private sale, this is the norm and courts generally enforce it.
What it does not do is license dishonesty. A seller who knows the transmission is failing and says otherwise, or who rolls back an odometer, or who conceals flood damage, has committed misrepresentation or fraud. An "as is" clause disclaims warranties; it does not immunize false statements. Sellers are better served by disclosing known defects in writing on the bill of sale itself, which converts a future dispute into a fact the buyer already agreed to.
Pro Tip
Fill out two identical originals and have both parties sign both, rather than signing one and photocopying it. Each side leaves with an original signature, which removes any argument about whose copy was altered after the fact.
Mistakes That Undermine the Protection
- Leaving the sale date blank. The date is what ends the seller's liability. Without it, the protection is theoretical.
- A vague item description. "Blue truck" identifies nothing. Serial numbers exist for exactly this reason.
- Understating the price to reduce tax. This is tax fraud, it invites an audit, and in some states it triggers the very notarization requirement you were trying to avoid.
- Treating it as a substitute for the title. A bill of sale does not transfer a titled asset by itself; the title still has to be signed over and processed.
- Not checking for liens. A buyer who pays for a vehicle with an outstanding loan against it may find the lender holds a superior claim to the car.
- Only one copy. Whoever does not have the paperwork is at a disadvantage in any later dispute.