Massachusetts Income Tax Calculator
Calculate Massachusetts state income tax with the flat 5% rate and the 4% millionaire surtax on income over $1,000,000. Massachusetts uses one of the simplest state income tax structures in the US, a single flat rate applied to all taxable income with an additional surtax for high earners passed in 2022. Estimate your annual and monthly MA state tax liability instantly.
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Formula
Massachusetts applies a flat 5% income tax rate to all taxable income regardless of amount. Income exceeding $1,000,000 is subject to an additional 4% surtax (the "Millionaire Tax" or "Fair Share Amendment"), bringing the top marginal rate to 9% on income above the threshold.
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How Massachusetts Income Tax Works
- Flat rate of 5% applies to all taxable income regardless of amount
- Additional 4% surtax on income exceeding $1,000,000 (effective 2023, adjusted for inflation annually)
- Standard deduction: $8,000 single, $16,000 married filing jointly
- No local or city income taxes anywhere in Massachusetts
- Renters can deduct 50% of rent paid, up to $4,000 per year
This calculator estimates Massachusetts state income tax only. Your total tax liability also includes federal income tax, Social Security (6.2%), and Medicare (1.45%). Use the Take Home Pay Calculator for a complete after-tax estimate.
You can also calculate changes using our Tax Calculator, Take Home Pay Calculator, Salary Calculator or New York Property Tax Calculator.
Frequently Asked Questions
What is the Massachusetts state income tax rate?
Massachusetts has a flat 5% income tax rate on all taxable income. Unlike most states that use progressive brackets, MA taxes every dollar at the same 5% rate. An additional 4% surtax applies to income exceeding $1,000,000, bringing the top marginal rate to 9%.
What is the Massachusetts millionaire surtax?
The millionaire surtax (officially the Fair Share Amendment, Question 1) was approved by voters in November 2022 and took effect for tax year 2023. It adds a 4% tax on annual income above $1,000,000. The $1M threshold is adjusted annually for inflation. Revenue is constitutionally dedicated to education and transportation.
Does Massachusetts have local income taxes?
No. Unlike states such as New York (NYC income tax) or Ohio (municipal income taxes), Massachusetts does not allow cities or towns to impose their own income taxes. The flat 5% state rate is the only income tax Massachusetts residents pay at the state and local level.
How does MA income tax compare to neighboring states?
Massachusetts at 5% flat is lower than Connecticut (3% to 6.99% progressive) and New York (4% to 10.9% progressive) for most income levels. New Hampshire has no income tax on wages. Rhode Island uses progressive rates from 3.75% to 5.99%. For incomes under $200,000, MA is competitive. Above $1M, the 9% combined rate puts it near New York and California levels.
What deductions reduce Massachusetts taxable income?
Massachusetts offers a standard deduction of $8,000 for single filers and $16,000 for married filing jointly. Personal exemptions are $4,400 single and $8,800 joint. Renters can deduct 50% of rent paid, up to $4,000. Other deductions include student loan interest, childcare expenses, and commuter transit costs. These reduce your taxable income before the 5% rate is applied.
Do I owe MA tax if I work remotely for a Massachusetts company?
If you live in Massachusetts, you owe MA income tax on all your income regardless of where you work. If you live in another state but work for an MA company, the rules depend on your state of residence and any reciprocity agreements. Massachusetts ended its temporary COVID-era rule that taxed remote workers in other states. Consult your specific situation with a tax professional.
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