Massachusetts vehicle taxes & fees

In short

Private sales are taxed on book value, not on your receipt

Under 830 CMR 64H.25.1 the taxable base on a private-party sale is the higher of the purchase price or the NADA clean trade-in value, adjusted for mileage only. Dents, rust, a failing transmission and a bad inspection history do not move the number, and Massachusetts provides no appraisal override to argue condition. A documented arm's-length bill of sale is the only real lever, and the RMV can still default to book value. Dealer purchases work differently: the trade-in allowance is subtracted first, so a $6,000 trade against a $20,000 car is taxed on $14,000. There is no trade-in deduction on a private sale at all, so two individuals swapping cars each owe tax on their own higher-of-price-or-book figure.

Excise is a fixed share of MSRP that stops falling at 10%

The valuation schedule in M.G.L. c.60A runs 50% of MSRP in the calendar year before the designated model year, 90% in the model year itself, then 60%, 40% and 25% in the second, third and fourth years. From the fifth year on it locks at 10% of MSRP and stays there for as long as you own the car. At $25 per $1,000, a three-year-old car with a $35,000 MSRP is valued at $14,000 and billed $350. Two neighbors with the same model year can get different bills purely because their trim levels carried different original MSRPs. The minimum excise is $5, and no schedule step ever takes it to zero.

Sixty dollars covers two years, but inspection is annual

A passenger vehicle registration is $60 and runs a full two-year term, which works out to about $30 a year. A motorcycle pays $20 but renews every twelve months, so the annualized figure lands close to a car's despite the smaller sticker. The inspection sticker is entirely separate and never syncs with either cycle: $35 a year for a car covering safety and emissions, $15 a year for a motorcycle, paid at a licensed station rather than to the RMV, and due within seven days of registering a newly acquired vehicle. Massachusetts adds no electric vehicle registration surcharge, so an EV pays the same $60 and the same MSRP-based excise as a gas car.

An unpaid town excise bill puts a hold on your RMV renewal

Excise is due within 30 days of the bill date. After that the town can issue a demand notice carrying a fee of up to $30 and begin charging 12% annual interest. Keep ignoring it and the town asks the RMV to mark the registration for non-renewal, at which point a municipal tax with no connection to the Registry stops you renewing plates. Clearing the mark costs a $20 release fee on top of the excise, the demand fee and the accrued interest. Because the excise bill usually arrives in late winter or spring and the registration expires on its own two-year clock, the hold is frequently discovered at renewal time rather than when the bill was missed.

Ten days to file, seven days to inspect, no grace on expired plates

A buyer has 10 days from the purchase date to file the Registration and Title Application and pay the 6.25% tax. Late filing lets the Department of Revenue add a failure-to-pay penalty of 1% of the tax per month, capped at 25%, plus interest. On a $15,000 purchase that is $937.50 in tax, so two months late adds roughly $19 in penalty and keeps growing. A vehicle staying out of state files Form ST-7R with DOR by the 20th of the following month instead. The inspection sticker is due within 7 days of registering. There is no grace period on an expired registration: driving on one is a criminal misdemeanor under M.G.L. c.90 section 23, carrying a $500 to $1,000 fine and up to 10 days in jail on a first offense, with the car towable on the spot.