Buying a car in Massachusetts
Every figure below is sourced to Massachusetts’s own revenue or motor vehicle publications and dated. Estimates only.
Auto loan calculator
The real out-the-door number — including whether your state credits your trade-in against the sales tax.
Auto lease calculator
Money factor, residual, and the payment — taxed by your state's actual method, since some states tax a lease's full value upfront instead of each payment.
Loan payoff calculator
What paying extra actually saves you — in interest and in months — on a car loan, a personal loan, or anything else that amortizes.
0% APR vs. cash rebate
Which dealer offer actually costs less over the life of the loan, and the rate at which they tie.
Personal loan calculator
Payment, total interest, and the effective APR once an origination fee is deducted from what actually reaches your account.
Debt consolidation calculator
Whether one loan actually beats paying your existing debts off as they are — measured against the best you could do without consolidating.
Auto refinance calculator
Whether refinancing your car loan is worth it — including whether a lower payment is being bought with a longer term on a depreciating asset.
Lease vs. buy a car
The same car both ways over the same months, with the resale value credited to the buyer — the part most comparisons leave out.
Massachusetts at a glance
- State sales tax
- 6.25%
- Local tax is added on top in most states — treat this as a floor.
- Trade-in credit
- Reduces your tax
- You are taxed on the price less your trade-in allowance.
- Dealer doc fee
- Not confirmed
- We have not confirmed a cap for this state, so we do not claim one.
- Title and registration
- Not confirmed
Massachusetts taxes the car every year, not just at purchase
A recurring annual tax on the vehicle’s value applies here — assessed at 90% of value at a representative 2.5% rate. It never appears in a monthly payment and is easy to miss when comparing states.MGL c.60A s.1, assessed by the city or town of registration. THE VALUATION IS A PERCENTAGE OF MANUFACTURER'S LIST PRICE IN THE YEAR OF MANUFACTURE — not purchase price, not current book value, so a buyer who negotiated a discount still pays excise on full list. The statutory schedule is 50% in the year preceding the year of manufacture, 90% in the year of manufacture, 60% in the second year, 40% in the third, 25% in the fourth, and 10% in the fifth and all later years. assessmentRatioPct is the 90% model-year figure, appropriate for a new purchase and materially overstating for anything older. The 2.5% rate ($25 per $1,000) is uniform statewide and set by statute — municipalities do NOT set their own excise rate, unlike real property, so 'typical' here is exact rather than representative. Minimum $5.
Local tax in Massachusetts
No local add-on — Massachusetts imposes a single statewide 6.25% sales/use tax with no county or municipal option, so the state rate is the entire rate everywhere in the Commonwealth. The separately levied annual motor vehicle excise is a distinct property-type tax, not a sales tax add-on.