Used-car deals between private parties in Massachusetts run on the MV-25 bill of sale, a signed-over title, and Form TR-130/RMV-1 stamped by your insurance agent. The RMV charges 6.25% sales/use tax at registration on the higher of price or NADA book, and the car must pass the annual MA safety and emissions inspection within 7 days. Buyers have 10 days to title and register.
Selling a used car as-is? Our private sale checklist walks you through price research, safely screening buyers, and the exact paperwork steps — so nothing slips through and you stay protected from post-sale disputes. Read: Private Car Sale Checklist →
Massachusetts Used Car Bill of Sale — What You Need to Know
Used cars model year 1981 and newer require a properly assigned MA title (or out-of-state title) before the RMV will register. Pre-1981 vehicles fall under the title cutoff and may transfer with a bill of sale plus prior registration.
Inspection
Required
Sales Tax Details
6.25% sales/use tax is collected by the RMV based on the higher of the actual sale price or NADA clean trade-in book value. Federal odometer disclosure is required for vehicles under 20 model years old.
Exemption: Direct-line family transfers (spouse, parent, child, sibling, grandparent, grandchild) are exempt with Form MVU-26.
Inspection Requirements
Used cars must pass annual MA safety + emissions inspection within 7 days of registration. Cars over 15 years old still need safety inspection but are exempt from the OBD-II emissions test.
Registration
Registration for this vehicle type is handled by Massachusetts Registry of Motor Vehicles (Mass RMV) — not the same agency that handles cars in Massachusetts. Plan for separate filings.
Massachusetts Used Car Sale — Step-by-Step Checklist
Run a CARFAX or NMVTIS report and verify the VIN on the dash, door jamb, and title match
Complete Form MV-25 with sale price, odometer reading, and both signatures
Seller assigns the MA title to the buyer with date and odometer disclosure
Buyer secures MA insurance and gets the RMV-1/TR-130 stamped by the agent
Title and register at the RMV within 10 days; pay 6.25% tax or file MVU-26 if family
Get safety + emissions inspection within 7 days of registration
Common Pitfalls
Buying without verifying the title is in the seller's name — open titles and curbstoners are common in MA
Skipping the federal odometer disclosure on cars under 20 model years old (required even on the MV-25)
Not checking for unpaid excise tax — the registry can hold a non-renewal marker against the plate transfer
Trusting a verbal "I'll give you the title later" — without an assigned title you cannot register and you have weak legal recourse
Underestimating tax because the seller wrote a low price; RMV pulls NADA value automatically
Pro Tip
Verify the title, insure it, register within 10 days, pay 6.25% tax at the RMV, and inspect within 7. Used-car deals that follow that rhythm rarely have problems.
Massachusetts Used Car Bill of Sale — FAQs
How does the RMV know if I underreported the price?
The RMV pulls the NADA clean trade-in value for the year/make/model when you go to register, and uses whichever is higher — your reported price or the NADA value — to calculate the 6.25% sales/use tax. So if you bought a 2018 Honda Civic for $4,000 because it needed work but NADA shows $11,000, you will pay tax on $11,000. You can dispute it by submitting Form MVU-29 with a mechanic's estimate of repairs needed and supporting photos, but the burden of proof is on you.
What odometer disclosure is required?
For vehicles under 20 model years old (federal rule as of 2021), the seller must disclose the actual mileage on both the title assignment and the bill of sale, and certify whether the reading is actual, exceeds mechanical limits, or is not the actual mileage. Massachusetts incorporates this into the MV-25 form. Vehicles 20+ model years old (in 2026, that means 2006 and earlier) are exempt from the federal odometer disclosure rule but you should still record the reading for your records and to avoid disputes.
Can I drive the car home before I register it?
Only if you arrange a transporter plate or have an existing MA registration to transfer. Massachusetts does not issue temporary tags to private buyers the way many states do. Most buyers either (1) trailer the car home, (2) have the seller drive with their plate to the RMV/insurance agent, or (3) transfer plates from another car they already own (you have 7 days from the date of transfer to register the newly-acquired vehicle on the transferred plates while still being insured).
What if the car fails inspection right after I buy it?
Massachusetts inspection results are the buyer's problem once the title is signed over, unless the seller misrepresented the car's condition (which is hard to prove on a private sale sold "as-is"). If your new car fails, you have 60 days to make repairs and one free re-inspection at the same station. Cars that fail emissions but pass safety can sometimes get a hardship waiver if repair costs exceed the state limit ($1,200 for older cars, varies). Always road-test before buying and consider a pre-purchase inspection — it is the single best $100-$150 you can spend.