What Massachusetts excise tax is and who pays it

Massachusetts excise tax is an annual tax on vehicle ownership, separate from your registration fee. The state charges it based on the value of your car, truck, or motorcycle. Every vehicle registered in Massachusetts owes it — there is no exemption for age, condition, or how often you drive.

The tax bill arrives in the mail from your city or town assessor's office, not from the Registry of Motor Vehicles. The amount varies by municipality because each town sets its own tax rate, though the state defines how the value is calculated. A $30,000 car in one town might owe a different amount than the same car in another town.

You receive a bill once per year, usually in the fall or winter. The due date also varies by town — some are due by December 31, others by January 31 or later. Check your bill for your specific important date, because missing it triggers a penalty and interest charges.

Key Takeaways

  • Your city or town assessor sends the excise tax bill to your address on file with the Registry of Motor Vehicles, so update your address if you move.
  • The bill shows the tax amount, the due date, and the payment methods your town accepts — which vary by municipality.
  • You can pay by mail, in person at the assessor's office, by phone, or online depending on what your town offers.
  • Paying late triggers a penalty that starts small but grows if you wait months, so paying within a few days of the due date matters.
  • If you sell the car or move out of state, you may still owe excise tax for the year you owned it, depending on when you sold it.

Where to find your bill and confirm the amount

The assessor's office in your city or town mails the excise tax bill to the address registered with the Registry of Motor Vehicles. If you moved and did not update your registration address, the bill may go to your old address. Check your mail carefully in the months before your town's due date, or call the assessor's office to confirm they have your current address.

The bill itself lists the vehicle identification number (VIN), the assessed value of your car, the tax rate your town uses, the total amount owed, and the due date. It also shows payment methods — some towns accept checks by mail, some accept online payments, and some accept both. A few towns still require in-person payment only.

If you cannot find your bill or think the amount is wrong, contact your town assessor's office directly. They can reissue a bill, explain how the value was calculated, or tell you whether you can file an abatement (a formal request to lower the assessed value). The assessor's phone number is usually on your town's website under "Assessor" or "Assessor's Office."

Paying by mail with a check

Most Massachusetts towns accept check payments by mail. Write the check to your city or town (not to the state), and include the account number or bill number from your excise tax bill. Mail it to the address printed on the bill — usually the assessor's office or the town collector's office.

Mail takes several days to arrive, so send your check at least one week before the due date. The postmark date counts as the payment date in most towns, meaning a check postmarked by the due date is considered on time even if it arrives after. However, some towns use the date received instead, so confirm with your assessor's office if you are cutting it close.

Keep a copy of your check or note the check number for your records. If you need proof of payment later, you can reference it.

Paying online or by phone

Many Massachusetts towns now offer online payment through their assessor's website or through a third-party payment processor. Search "[your town name] excise tax payment" to find the link, or call the assessor's office for the URL. Online payment usually shows your bill information and lets you pay by debit card or bank transfer.

Some towns accept phone payments as well. Call the assessor's office or the town collector's office and ask whether they take credit or debit card payments over the phone. Have your bill number and card information ready. Payment by phone is usually processed the same day.

Online and phone payments may include a processing fee — typically $1 to $3 — added to your bill. The assessor's office or payment website will show the fee before you confirm the transaction.

Paying in person at the assessor's office

You can walk into your town's assessor's office and pay with cash, check, or debit card. Bring your bill or your account number. The office will give you a receipt showing the payment date and amount. Hours vary by town, so call ahead or check the town website to confirm when the office is open.

Paying in person is the fastest way to may support your payment is recorded on the same day. If you are close to the due date and worried about mail delays, this is the safest option.

What happens if you pay late

If your payment arrives after the due date, your town assesses a penalty. The penalty structure varies by municipality, but typically starts at 0% if you pay within 14 days of the due date, then jumps to 10% if you pay between 15 and 30 days late. After 30 days, the penalty may increase further or interest may begin to accrue.

The longer you wait, the more you owe. A $500 excise tax bill becomes $550 if you pay 20 days late (10% penalty). If you cannot pay by the due date, contact the assessor's office to ask about a payment plan or extension. Some towns will work with you if you explain the situation before the important date passes.

If you do not pay for several months, the town may file a lien against your vehicle or your property. This prevents you from renewing your registration or selling the car without settling the debt. The Registry of Motor Vehicles will not renew your registration if excise tax is unpaid.

Excise tax when you sell or move

If you sell your car mid-year, you may still owe excise tax for the full year, depending on your town's rules and when you sold it. Some towns prorate the tax if you sell after a certain date in the year. Contact the assessor's office to ask whether you are may have access to to a refund or credit.

If you move out of Massachusetts, you owe excise tax for the year you owned the car in the state. Once you register the car in another state, you no longer owe Massachusetts excise tax for future years. However, you must still pay for the year you lived here.

If you move within Massachusetts to a different town, your new town's assessor will bill you going forward. You do not pay two towns for the same year.

Frequently Asked Questions

What if I did not receive my excise tax bill in the mail?

Call your town assessor's office and provide your vehicle identification number (VIN) or license plate number. They can confirm whether a bill was mailed and to which address. If your address on file with the Registry is wrong, update it when ready and ask the assessor to reissue the bill. You are still responsible for paying even if you did not receive the bill.

Can I dispute the assessed value of my car?

Yes. You can file an abatement with the assessor's office, usually within a set time frame (often 30 days of receiving the bill). You will need to show that the assessed value is too high — for example, by providing a recent appraisal or sale price. The assessor will review your request and may lower the value, which reduces your tax bill.

Do I have to pay excise tax if my car is registered but I do not drive it?

Yes. Excise tax is based on ownership and registration, not on use. If the car is registered in Massachusetts, you owe the tax regardless of whether you drive it. The only way to stop owing excise tax is to unregister the car or move it out of state.

What if I pay online but my payment does not show up in the system?

Online payments usually post within one to three business days. If more than three days have passed and you do not see a confirmation, contact the assessor's office with your payment confirmation number (from your receipt or email). They can look up the payment and confirm it was received. Keep your confirmation email or receipt as proof.

Can I set up automatic payments for excise tax each year?

Most Massachusetts towns do not offer automatic renewal payments for excise tax because the bill amount changes each year based on the assessed value. However, you can set a reminder on your phone or calendar for the due date, or ask the assessor's office to email you when the bill is mailed. Some towns are beginning to offer online account portals where you can check your bill status anytime.