How to Pay Your Massachusetts Excise Tax and What Happens If You Don't

What the Massachusetts excise tax is and who owes it

Massachusetts excise tax is a yearly tax on vehicle ownership, not on driving or fuel. You owe it if you own a car, truck, motorcycle, or other motor vehicle registered in Massachusetts. The tax is based on the vehicle's value, and the amount changes each year as your vehicle depreciates. The town or city where you register the vehicle collects it, not the state directly.

The excise tax bill arrives in the mail from your local assessor's office, usually between July and October, though timing varies by town. The bill shows the tax amount due, the deadline to pay, and the address or methods for payment. If you do not receive a bill, that does not mean you do not owe the tax — you are still responsible for finding out what you owe and paying it on time.

Key Takeaways

• Massachusetts excise tax is owed by the vehicle owner to their town or city assessor, based on the vehicle's value, and bills arrive by mail once per year.
• Payment methods vary by town but usually include mail, in-person payment at the assessor's office, online portals, and sometimes phone or automatic bank withdrawal.
• Late payments trigger a 14 percent penalty plus interest, and unpaid excise tax can lead to vehicle registration suspension and a lien on your property.
• If you cannot pay in full, contact your town assessor to ask about payment plans or hardship relief before the deadline passes.
• Seniors, disabled persons, and low-income owners may be may be able to access for exemptions or deferrals, which must be requested through your assessor's office.

How to find your excise tax bill and payment deadline

Your excise tax bill comes from your town or city assessor's office, not from the state. If you moved recently or your mailing address changed, the bill may not reach you. You can contact your assessor's office directly by phone or visit their website to ask for a copy of your bill or to confirm the amount owed. Most towns post their assessor's office phone number and address on the town website under "Assessor" or "Tax Collector."

The deadline to pay is set by your town and appears on the bill itself. Missing the deadline triggers penalties and interest, so mark it on your calendar as soon as you receive the bill. If you cannot locate your bill, call your assessor's office and ask them to mail a duplicate or tell you the amount and due date over the phone. Some towns allow you to look up your tax account online using your address or property identification number.

Payment methods and where to send your money

Most Massachusetts towns accept payment by mail, in person at the assessor's or tax collector's office, and increasingly by online portal or credit card. The bill itself lists the mailing address and payment methods available in your town. Paying by mail means writing a check, including your bill number or account number, and mailing it to the address shown on the bill — allow at least one week for the check to arrive and be processed.

In-person payment at your town's assessor or tax collector's office is the fastest way to confirm receipt and avoid mail delays. Some towns offer online payment through their website or a third-party vendor; check your bill or the town website for a link. A few towns accept automatic bank withdrawal or phone payment, though these are less common. If you pay by credit card, ask whether the town charges a processing fee, as this can add to your total cost.

Proof of payment matters if a dispute arises later. If you pay by mail, keep a copy of the check or money order and the bill. If you pay online or in person, request a receipt or confirmation number. Do not assume the payment went through just because you sent it — follow up with your assessor's office within two weeks to confirm the payment was received and posted to your account.

Penalties, interest, and what happens if you do not pay

If your excise tax payment arrives after the deadline, Massachusetts law adds a 14 percent penalty to the amount owed, plus interest that accrues monthly. The penalty is automatic — there is no grace period or waiver process. For example, if you owe $300 and pay one month late, you will owe $342 plus interest. The longer you wait, the more interest accumulates, so paying late is always more expensive than paying on time.

Unpaid excise tax has serious consequences beyond the penalty. Your town can suspend your vehicle registration, which means you cannot legally drive the car or renew your license plate. The unpaid tax also becomes a lien on your property, meaning the town has a legal claim against your home or other real estate you own. If you sell the property, the town can take the tax money from the sale proceeds before you receive anything. The lien stays on your property record until the tax and all penalties and interest are paid in full.

If the debt remains unpaid for several years, your town may refer it to a collection agency or pursue legal action. This can damage your credit score and make it harder to borrow money in the future. The best time to act is before the deadline passes — if you know you cannot pay in full, contact your assessor's office immediately to discuss options.

Payment plans and hardship relief

If you cannot pay the full amount by the deadline, contact your town assessor's office before the due date and ask about a payment plan. Many towns will allow you to pay in installments over several months rather than all at once, though the 14 percent penalty still applies if you miss the original deadline. The assessor's office sets the terms of the plan — how many payments, how much each payment is, and when each is due. Get the payment plan agreement in writing so you have a record of what you agreed to.

Some towns offer hardship relief or tax abatement for owners facing genuine financial difficulty, though this is not may provide and varies widely by town. To request relief, contact your assessor's office and explain your situation — job loss, medical emergency, disability, or other hardship. You may be asked to provide documentation such as proof of income, medical bills, or unemployment benefits. The assessor's office reviews the request and decides whether to grant a partial or full abatement. This process takes time, so start it as soon as you know you are in trouble.

Exemptions and deferrals for seniors, disabled persons, and low-income owners

Massachusetts offers excise tax exemptions and deferrals for certain groups, but you must request them — they do not happen automatically. Seniors aged 65 and older, persons with disabilities, and low-income owners may be may be able to access, depending on your town's specific rules and your income level. Income thresholds vary by town and change yearly, so you need to check with your assessor's office to see if you may have access to.

An exemption means you do not owe excise tax at all. A deferral means you delay paying until you sell the vehicle or pass away; the tax is still owed eventually, but you do not have to pay it now. To request either, contact your assessor's office and ask what documents you need to provide — typically proof of age, disability status, or income. You usually must file the request before or shortly after the bill is issued, so do not wait until the deadline is near. Some towns have a separate form for exemptions; others handle them through the assessor's office.

What to do if you lose your bill or cannot reach your assessor's office

If your bill never arrived or you lost it, do not ignore the debt. Contact your town assessor's office by phone, email, or in person and ask for a duplicate bill or a statement of what you owe. Provide your vehicle's registration number or your property address so they can look up your account. If your town has an online tax portal, you may be able to log in and view your bill there. Most assessor's offices respond within a few business days.

If you cannot reach your assessor's office by phone, try visiting in person during business hours — most offices are open Monday through Friday, 9 a.m. to 4 p.m. You can also check your town's website for an email address or online contact form. Some towns have a separate tax collector's office that handles payments; if so, they can also tell you what you owe and accept payment. The key is to make contact before the deadline so you have time to pay and avoid the 14 percent penalty.

Frequently Asked Questions

Can I pay my excise tax online?

Many Massachusetts towns offer online payment through their website or a third-party vendor, but not all. Check your bill for a payment link or call your assessor's office to ask. If your town does not have online payment, you can pay by mail, in person, or by phone if available. Some towns charge a processing fee for credit card or online payments, so ask about that before you pay.

What happens if I sell my car before the excise tax bill arrives?

You still owe excise tax for the full year, even if you sell the vehicle partway through. The bill is based on ownership as of January 1 of that year. When you sell the car, transfer the registration to the new owner, and your town will eventually send you a bill for the full year's tax. You cannot avoid it by selling early.

Can I deduct excise tax from my income taxes?

No. Excise tax is a local property tax on vehicle ownership and is not deductible on your federal or state income tax return. It is separate from any sales tax you paid when you bought the vehicle.

What if I disagree with the value my town assigned to my vehicle?

You can file an abatement request with your assessor's office if you believe the vehicle's value is too high. You will need to provide evidence such as a recent appraisal, a bill of sale, or comparable vehicle prices. The assessor's office reviews the request and decides whether to lower the value. There is usually a deadline to file, so contact your assessor's office early if you want to challenge the valuation.

Does excise tax apply to motorcycles and trailers?

Yes, excise tax applies to any motor vehicle registered in Massachusetts, including motorcycles, mopeds, and trailers. The tax is based on the vehicle's value just like a car. If you own multiple vehicles, you receive a separate bill for each one.