Yes, Massachusetts has a state income tax

Massachusetts charges a state income tax on wages, investment income, and other earnings. The tax rate is a flat 5 percent on most types of income, which means everyone pays the same percentage regardless of how much they earn. This is different from the federal income tax, which uses brackets where higher earners pay higher percentages.

The state also collects sales tax (6.25 percent on most purchases) and property tax (which varies by town). This guide focuses on state income tax, since that is what most people encounter through their paychecks.

Key Takeaways

  • Massachusetts charges a flat 5 percent state income tax on wages, salaries, and most other income.
  • Your employer withholds state income tax from your paycheck automatically, just like federal tax.
  • You file a state tax return with the Massachusetts Department of Revenue if you earned income in the state during the tax year.
  • Certain types of income, such as long-term capital gains and dividends, are taxed at different rates or may be exempt.
  • If you moved to or from Massachusetts during the year, you may owe tax to both states or be may have access to to a credit.

How the 5 percent tax rate works

The 5 percent rate applies to your taxable income—the amount left after you subtract deductions and exemptions. You do not pay 5 percent on your gross salary. For example, if you earn $50,000 and claim the standard deduction, your taxable income is lower, and you pay 5 percent on that smaller number.

Massachusetts allows you to claim either the standard deduction or itemize deductions, similar to federal taxes. The standard deduction amount changes each year. For the 2024 tax year, the standard deduction is $4,400 for single filers and $8,800 for married couples filing jointly.

The 5 percent rate is the same whether you earn $30,000 or $300,000. This flat-rate structure is simpler than the federal system but means higher earners pay more total tax in dollars, even though the percentage stays constant.

What income is taxed at different rates

While wages and most income are taxed at 5 percent, Massachusetts taxes some types of income differently. Long-term capital gains—profits from selling stocks, real estate, or other investments you held for more than one year—are taxed at 5 percent. Short-term capital gains (held one year or less) are also taxed at 5 percent.

Certain types of income are exempt from Massachusetts state tax. These include:

  • Interest and dividends (with limited exceptions for certain types)
  • Gains from selling your primary residence, up to certain limits
  • Social Security benefits
  • Certain retirement distributions, depending on your age and the type of account

If you receive income from sources outside Massachusetts, you may owe tax to both Massachusetts and another state. Massachusetts offers a credit for taxes paid to other states to prevent double taxation, but you need to claim it on your return.

How withholding works on your paycheck

Your employer withholds Massachusetts state income tax from your paycheck automatically. The amount withheld is based on the W-4 form you complete when you start a job. On this form, you tell your employer how many allowances to claim, which affects how much tax is held from each check.

If you claim too many allowances, too little tax is withheld and you may owe money when you file your return. If you claim too few, too much is withheld and you receive a refund. Many people adjust their W-4 during the year if their situation changes—for example, if they get married, have a child, or take a second job.

You can check your withholding by looking at your pay stub. It should show the gross pay, the state tax withheld, federal tax withheld, and other deductions. If the state tax amount seems wrong, contact your employer's payroll department or the Massachusetts Department of Revenue.

Filing your Massachusetts state tax return

You must file a Massachusetts state tax return if you earned income in the state during the tax year, even if no tax is owed. The important date is typically April 15, the same as federal taxes. You can request an extension to October 15 if you need more time.

Massachusetts accepts returns filed electronically through the state's online system or through tax software that supports Massachusetts returns. You can also file by mail using Form 1, the Massachusetts resident income tax return. If you are a part-year resident (moved to or from the state during the year), you file Form 1-NR/PY instead.

When you file, you report all income earned in Massachusetts, claim deductions and exemptions, and calculate the tax owed. If your withholding was more than the tax owed, you receive a refund. If it was less, you owe the difference. The state processes refunds within four to six weeks if you file electronically.

Special situations: part-year residents and non-residents

If you moved to Massachusetts during the year, you are a part-year resident and owe tax only on income earned while you lived in the state. If you moved out of Massachusetts, you still owe tax on income earned while you were a resident. You file Form 1-NR/PY to report this split-year income.

If you worked in Massachusetts but lived in another state, you are a non-resident for tax purposes. You owe Massachusetts tax on income earned in the state, but you also file a return in your home state. Both states allow credits for taxes paid to the other state to prevent paying tax twice on the same income.

Military members stationed in Massachusetts may be exempt from state income tax on military pay, depending on their home state. If you are military, check with the Massachusetts Department of Revenue or your tax preparer about your specific situation.

Where to find forms and get help

The Massachusetts Department of Revenue website (mass.gov/dor) has all tax forms, instructions, and current tax rates. You can read Form 1 and the instruction booklet, which walks through each line of the return. The site also has a tax rate table showing the standard deduction and other figures that change yearly.

If you have questions about your return, you can call the Department of Revenue's taxpayer information line. Wait times are shorter early in the tax season (January and February) than in March and April. You can also visit a local tax clinic if you earn below a certain income threshold—many are free and run by volunteers trained by the IRS.

Tax software such as TurboTax, H&R Block, and TaxAct all support Massachusetts returns. If you use software, make sure it is set to file both federal and state returns, since some packages charge extra for state filing.

Frequently Asked Questions

Do I have to file a Massachusetts tax return if I did not earn much income?

Yes, you must file if you earned any income in Massachusetts during the tax year, even if the amount is small. The only exception is if your income is below the filing threshold for your filing status, which changes yearly. Check the Department of Revenue website for the current threshold.

What happens if I do not file or pay on time?

The state charges penalties and interest on unpaid taxes. The penalty is usually 5 percent of the unpaid tax per month, up to 25 percent total. Interest accrues daily at a rate set quarterly by the state. If you cannot pay by the important date, file your return anyway to reduce penalties, then contact the Department of Revenue about a payment plan.

Can I deduct my federal income tax from my Massachusetts state tax?

No, Massachusetts does not allow you to deduct federal income tax paid. You can deduct state and local property taxes and sales tax (up to a limit) on your federal return, but not the other way around.

Do I owe Massachusetts tax on income from a job in another state?

No, you owe tax only to the state where you earned the income. If you worked in New York but live in Massachusetts, you owe New York tax on that income. You may also owe Massachusetts tax on other income (such as a side job in the state), but not on the out-of-state wages.

What is the difference between the standard deduction and itemizing?

The standard deduction is a fixed amount you subtract from your income. Itemizing means you add up specific deductions (property tax, mortgage interest, charitable donations) and subtract that total instead. You choose whichever gives you the larger deduction. Most people use the standard deduction because it is simpler and often larger.