Buying a car in Massachusetts

Sales tax on a car in Massachusetts

Massachusetts charges a state sales tax of 6.25% on vehicle purchases.

On a private sale, the 6.25% use tax is charged on the greater of the actual price or the vehicle's clean trade-in book value. A separate annual motor vehicle excise of $25 per $1,000 of value is billed by the city or town where the vehicle is garaged.

Does a trade-in lower the tax?

On a sale by a registered dealer, tax is based on the sales price minus the trade-in amount, provided the buyer paid tax on the traded vehicle or was exempt from it. No trade-in reduction is allowed on a private (casual) sale.

Example, state tax only. On a $30,000 car with a $10,000 trade-in, the taxable amount is $20,000, so the state tax is about $1,250. Without the trade-in it would be $1,875. Local taxes and fees are extra.

Dealer doc fees in Massachusetts

Massachusetts does not set a dollar limit on the dealer documentary preparation fee, but the Attorney General requires any mandatory doc fee to be included in the advertised price. Dealers may not charge more than $5 for title preparation.

The documentation fee is taxed along with the vehicle.

Whatever the rule, the fee is part of your out-the-door price. Ask for it in the written quote and negotiate the total, not the line. See dealer fees explained.

Title and registration

Titles and registrations are handled by the Massachusetts Registry of Motor Vehicles. The Registration and Title Application must be filed, and any tax paid, within 10 days of buying the vehicle. The application must be stamped by a Massachusetts insurance agent, and many dealers and insurance agents can process the registration electronically.

Also worth knowing

• A buyer who already has a registered vehicle has a 7-calendar-day grace period, from the date the old vehicle is disposed of, to transfer the registration to the new vehicle.
• The RMV does not issue temporary registration plates, and there is no grace period for a buyer who does not currently have a registered vehicle.
• A vehicle inspection sticker must be obtained within 7 days of the registration date.
• The Used Car Lemon Law covers dealer-sold used cars costing at least $700 with fewer than 125,000 miles, for 30 to 90 days depending on mileage.

Sources

1. Massachusetts Department of Revenue: Motor Vehicle and Trailer Sales and Use Tax (mass.gov)
2. Massachusetts Department of Revenue: Directive 14-1, Document and Title Preparation Fees Charged by Motor Vehicle Dealers (mass.gov)
3. Massachusetts Attorney General: Advisory to Motor Vehicle Dealerships on Advertising and Pricing Requirements (mass.gov)
4. Massachusetts RMV: Apply for a registration and title for a vehicle purchased from a dealer (mass.gov)
5. Massachusetts RMV: Transfer your registration to a vehicle or trailer purchased from a dealer (mass.gov)
6. Massachusetts Department of Revenue: Motor Vehicle Excise (mass.gov)
7. Massachusetts Office of Consumer Affairs and Business Regulation: Used Car Lemon Law (mass.gov)

Last checked Nov 10, 2026; next review by Feb 10, 2027. This page explains how the rules generally work and is not tax or legal advice. Rules change, so confirm with the state. Report an error.