In Massachusetts, you need a bill of sale for a car when the seller’s certificate of title has no field for the sales price, or when the vehicle is old enough to be exempt from titling altogether. Outside those situations the Registry of Motor Vehicles doesn’t demand a separate document, because the signed title itself records the transfer. Even then, writing one up is worth the few minutes it takes: it fixes the price, the odometer reading, and the date of sale in a single piece of paper that both sides can rely on later.
When the RMV Actually Requires One
The rule is narrower than people assume. If the previous owner’s Massachusetts title includes a space for the sales price, you fill it in and the title does the work. A separate bill of sale is only required when the title lacks that field.1Mass.gov. Apply for a Registration and Title for a Vehicle Purchased From an Individual Plenty of older Massachusetts titles don’t have one, so in practice a standalone bill of sale comes up more often than the rule suggests.
Either way, both buyer and seller must sign and print their names on the transfer document, and the seller has to record the odometer reading and the date of transfer.2Mass.gov. Private Party Car Sales
Cars Exempt From Titling
Massachusetts exempts certain vehicles from its titling requirements under Chapter 90D. The most common exemption covers passenger vehicles with a model year of 1980 or older that were purchased before November 26, 1990.3Mass.gov. Vehicle Certificate of Title Trailers weighing 3,000 pounds or less and vehicles owned by nonresidents with a valid out-of-state title are also exempt, among other categories.4General Court of Massachusetts. Massachusetts Code Chapter 90D Section 2
When no title exists, the bill of sale is your primary record of the transaction. The RMV confirms that for title-exempt vehicles you must present both the previous registration and a bill of sale.5Mass.gov. Family/Gift Transfers If you’re buying a classic car from the late 1970s, treat the bill of sale as the main document, not an afterthought.
What to Put in a Massachusetts Bill of Sale
No single statute prescribes a universal form, but the RMV’s transfer requirements give you a working template. A usable bill of sale for a car should include:
- The date ownership transferred.
- Full legal names, addresses, and signatures of buyer and seller, with both names also printed.
- A description of the vehicle: year, make, model, body type, color, and Vehicle Identification Number.
- The agreed purchase price. Write “gift” if no money changed hands.
- The odometer reading, which Massachusetts requires the seller to state on the transfer document.1Mass.gov. Apply for a Registration and Title for a Vehicle Purchased From an Individual
- A condition statement, including an “as is” clause if that’s the deal.
The “As Is” Clause
If you’re selling without any promise about the car’s condition, say so in the bill of sale. An as-is statement means the buyer accepts the vehicle in its current state and generally waives the right to come back later over defects they could have discovered before purchase. It eliminates implied warranties, but it does not override express promises the seller made during the deal. If you told the buyer the transmission was rebuilt last year, that’s an express warranty regardless of the as-is language.
Odometer Disclosure
Federal law requires odometer disclosure on every transfer within a vehicle’s first 20 model years, starting with model year 2011 and newer vehicles. Model year 2010 and older cars fall under the previous 10-year rule and are already exempt.6National Highway Traffic Safety Administration. Consumer Alert: Changes to Odometer Disclosure Requirements For any car still inside those windows, the mileage figure isn’t optional, and misstating it is a crime under both state and federal law.
How the Bill of Sale Affects Sales Tax
The price you write down drives the tax bill. Massachusetts charges a 6.25% use tax on private vehicle sales, calculated on the greater of the actual sales price or the vehicle’s clean trade-in book value.7Mass.gov. Motor Vehicle and Trailer Sales and Use Tax That book-value floor is the detail that catches people. Writing a low number on the bill of sale won’t reduce the tax if the book value is higher. The state adjusts book value for high or low mileage, and no trade-in credit is allowed on private sales.
You have to file the Registration and Title Application and pay the tax within 10 days of buying the car if you’re registering or titling it in Massachusetts. If you’re not, Form ST-7R is due by the 20th of the following month.7Mass.gov. Motor Vehicle and Trailer Sales and Use Tax An accurate bill of sale makes that filing straightforward; a missing or sloppy one invites questions from the RMV and the Department of Revenue.
Gift and Family Transfers
Giving a car to a family member follows a similar process with its own paperwork. You bring the Registration and Title Application signed by the new owner and stamped by the insurance company, and the previous owner’s certificate of title assigned to the new owner with the date, odometer reading, and “Gift” written in place of the purchase price. If the vehicle is exempt from titling, you bring the previous registration and a bill of sale instead. You’ll also need the right sales tax exemption form, MVU-26 for family transfers or MVU-24 for gifts, completed and signed by the previous owner. Fees include a $75 title fee, a $25 gift transfer fee, and the applicable registration fee.5Mass.gov. Family/Gift Transfers Standard passenger registration is $60 for a two-year period with normal plates.8Mass.gov. Massachusetts Registry of Motor Vehicles Fees Properly documented gifts between qualifying family members are exempt from the 6.25% use tax, which is one of the few ways to avoid it entirely.
Private Sale Protections the Bill of Sale Supports
Massachusetts gives private-sale buyers more protection than most states, and the bill of sale ties into those protections directly. Private sellers must disclose known serious problems. If the car has obvious defects the seller didn’t reveal that make it unsafe or unusable, the buyer can cancel the sale within 30 days and get a refund, minus a reasonable-use charge of up to 15 cents per mile driven. The car also has to pass a safety inspection. The buyer should get it inspected within seven days of purchase, and if the repairs needed to pass would cost more than 10% of the sale price, the buyer can return the vehicle.
A detailed bill of sale strengthens both sides. For the buyer, it fixes the purchase price that sets the 10% repair threshold and the sale date that starts the 30-day and 7-day clocks. For the seller, an as-is clause and a written description of any disclosed issues become evidence that the problems were on the table. Motorcycles aren’t covered by these return provisions, though ordinary breach-of-contract claims still apply.
Keep a Copy
Both sides should hold onto one. The buyer typically submits the original to the RMV, so photocopy or scan it first. The document can matter years later for a tax question, an insurance claim, or an ownership dispute, and the person with paperwork is in a far better position than the person without it.