Massachusetts has a state income tax, and most residents and workers must file a return

Massachusetts charges a 5.0% flat tax on income for most taxpayers. This rate applies to wages, self-employment income, interest, dividends, and other income sources. Unlike some states, Massachusetts does not have a graduated tax bracket system — everyone pays the same percentage regardless of how much they earn.

If you live in Massachusetts or earned income there, you almost certainly owe state income tax. The state requires you to file a return if your income exceeds the filing threshold, which changes each year based on your filing status and age. Even if you fall below the threshold, filing may still benefit you if taxes were withheld from your paychecks — you could receive a refund.

Key Takeaways

  • Massachusetts taxes income at a flat 5.0% rate, and the state requires most residents and workers to file a return each year.
  • You must file if your income exceeds the annual threshold, which varies by filing status and whether you are 65 or older.
  • Massachusetts taxes wages, self-employment income, capital gains, and most other income types at the same 5.0% rate.
  • You can file your Massachusetts return using the state's free tax software, a tax professional, or paper forms available from the Department of Revenue.

Who must file a Massachusetts state income tax return

The Massachusetts Department of Revenue sets an annual income threshold. For the 2024 tax year, you must file if your gross income is at least $15,000 (single filer), $30,000 (married filing jointly), or $15,000 (married filing separately). These thresholds increase slightly each year. If you are 65 or older, the threshold is higher — check the current year's instructions from the Department of Revenue website.

You must file even if you fall below the threshold if you had Massachusetts income tax withheld from your paychecks. Many people in this situation receive a refund. Additionally, if you are self-employed, you must file to pay self-employment tax to both the federal government and Massachusetts, regardless of income level.

Non-residents who earned income in Massachusetts may also need to file a state return, depending on the type and amount of income. This includes people who worked in Massachusetts but lived in another state.

What income Massachusetts taxes at 5.0%

Massachusetts taxes most types of income at the flat 5.0% rate. This includes W-2 wages from an employer, self-employment income, interest from savings accounts and bonds, and dividends from stocks. Capital gains — profit from selling an asset like real estate or investments — are also taxed at 5.0%.

A few income types receive different treatment. Long-term capital gains and may have access to dividends may be taxed at a lower rate under certain circumstances, though the specifics depend on your total income and filing status. Retirement income, including distributions from traditional IRAs and 401(k) plans, is taxed as ordinary income at 5.0%. Social Security benefits are not taxed by Massachusetts.

Some income is not taxed at all. This includes gifts, inheritances, life insurance proceeds, and certain types of municipal bond interest. If you are unsure whether a specific income source is taxable in Massachusetts, the Department of Revenue website has detailed guidance, or you can contact a tax professional.

How to file your Massachusetts state income tax return

You have three main options for filing: use free state tax software, work with a tax professional, or file by paper. The Massachusetts Department of Revenue offers free tax software through its website for most taxpayers. The software walks you through each section of the return and calculates your tax liability automatically. You can file electronically and receive a refund by direct deposit within two to three weeks.

If you use a tax professional — a CPA, enrolled agent, or tax preparation service — they will handle the filing for you. Many charge a fee based on the complexity of your return. Some tax preparation services offer free filing for lower-income taxpayers; check the Department of Revenue website for current programs.

Paper forms are available from the Department of Revenue website or by mail. You must print, complete by hand, and mail the forms to the address listed in the instructions. Paper returns take longer to process — typically four to six weeks for a refund.

important date and penalties for late filing

Massachusetts follows the federal tax important date: returns are due on April 15 each year, or the next business day if April 15 falls on a weekend or holiday. If you cannot file by the important date, you can request an extension, which gives you until October 15 to file. An extension delays your filing important date but does not delay your tax payment important date — if you owe tax, it is still due by April 15.

If you file late without an extension, the Department of Revenue charges a penalty. The penalty is typically 5% of the unpaid tax for each month the return is late, up to a maximum of 25%. If you owe tax and do not pay by April 15, interest accrues at a rate set by the state each quarter. Penalties and interest compound, so filing and paying as soon as you can saves money.

Deductions and credits available in Massachusetts

Massachusetts allows a standard deduction, which reduces your taxable income. For the 2024 tax year, the standard deduction is $6,950 for single filers and $13,900 for married couples filing jointly. If you are 65 or older, the standard deduction is higher. You can also itemize deductions if they exceed the standard deduction, though Massachusetts does not allow all federal deductions — check the state instructions for which deductions are allowed.

Massachusetts offers several tax credits that reduce your tax liability dollar-for-dollar. The Earned Income Tax Credit (EITC) is available to lower-income workers and families. The Child and Dependent Care Credit helps offset childcare costs. The Dependent Exemption Credit provides a credit for each dependent you claim. These credits can result in a refund if they exceed your tax liability.

Some income sources have special deductions. For example, if you received a distribution from a retirement account, you may be able to deduct part of it. Military service members may may have access to for deductions on military income. Review the current year's tax instructions or speak with a tax professional to determine which deductions and credits explore to your situation.

What happens if you do not file or pay

If you do not file a required return, the Department of Revenue can file a return on your behalf based on information it receives from employers and financial institutions. This return, called a substitute return, typically shows the highest possible tax liability because it does not include deductions or credits you might claim. You will receive a bill for the tax, plus penalties and interest.

If you owe tax and do not pay, the state can place a lien on your property, garnish your wages, or intercept your state and federal refunds. The Department of Revenue can also suspend your driver's license or professional licenses if you have an unpaid tax debt. If you cannot pay in full, you can contact the Department of Revenue to set up a payment plan.

If you believe you made a mistake on your return or have a legitimate reason for not filing, contact the Department of Revenue as soon as possible. The sooner you address the issue, the lower your penalties and interest will be.

Frequently Asked Questions

Do I have to file a Massachusetts return if I only lived there part of the year?

Yes, if you lived in Massachusetts for any part of the tax year and earned income, you must file a Massachusetts return for that year. You report only the income you earned while a resident. If you moved to another state partway through the year, you may also need to file a return in the other state for the income earned there.

Is Social Security taxed in Massachusetts?

No. Massachusetts does not tax Social Security benefits. If Social Security is your only income, you do not need to file a state return. However, if you have other income that pushes you above the filing threshold, you must file, but the Social Security portion is not taxed.

Can I file my Massachusetts return electronically if I use a paper federal return?

Yes. Your state and federal returns are separate filings. You can file your federal return on paper and your Massachusetts return electronically, or vice versa. Most people file both electronically because it is faster and reduces errors.

What if I moved out of Massachusetts — do I still owe state income tax?

You owe Massachusetts income tax only on income you earned while you were a resident. Once you move and establish residency in another state, you no longer owe Massachusetts tax on new income. However, you must file a final Massachusetts return for the year you moved, reporting income only through your move date.

How do I know if I am considered a Massachusetts resident for tax purposes?

You are a Massachusetts resident if you maintained a permanent home in the state and spent more than 183 days there during the tax year. If you have a permanent home in Massachusetts but spent fewer than 183 days there, you may still be considered a resident if you did not maintain a permanent home in another state. The Department of Revenue website has detailed residency rules, or you can contact them directly.