Massachusetts State Income Tax Overview
Massachusetts (MA) state income tax rate: 5.0% (9.0% on income over $1M under the "Millionaires Tax") (flat rate system)
Massachusetts Income Tax Brackets (2026)
Flat 5.0% on income up to $1,000,000; an additional 4% surtax (Millionaires Tax) applies on income over $1,000,000, effective 2023
Massachusetts has a flat 5% income tax, but voters approved the "Fair Share Amendment" in 2022, adding a 4% surtax on income over $1 million (total 9%). This applies to all income over $1M including capital gains. The surtax revenue funds education and transportation.
Median Household Income in Massachusetts
The median household income in Massachusetts is $89,026. Massachusetts has one of the highest median incomes nationally, fueled by its world-class healthcare, education, biotech, and technology sectors concentrated in Greater Boston. The Millionaires Tax primarily affects residents in these high-income industries.
How to Use This Calculator for Massachusetts
- Enter your gross income and filing status
- The calculator applies Massachusetts's flat income tax rate of up to 5.0% (9.0% on income over $1M under the "Millionaires Tax")
- Subtract your standard deduction and any applicable credits
- Review your estimated state and federal tax liability
Frequently Asked Questions
What is the Massachusetts state income tax rate?
Massachusetts has a flat income tax with a top rate of 5.0% (9.0% on income over $1M under the "Millionaires Tax"). Flat 5.0% on income up to $1,000,000; an additional 4% surtax (Millionaires Tax) applies on income over $1,000,000, effective 2023.
How does Massachusetts's income tax compare to the national average?
Massachusetts's top income tax rate of 5.0% (9.0% on income over $1M under the "Millionaires Tax") applies to a flat rate system. Massachusetts has a flat 5% income tax, but voters approved the "Fair Share Amendment" in 2022, adding a 4% surtax on income over $1 million (total 9%). This applies to all income over $1M including capital gains. The surtax revenue funds education and transportation.
What is the median household income in Massachusetts?
The median household income in Massachusetts is $89,026. Massachusetts has one of the highest median incomes nationally, fueled by its world-class healthcare, education, biotech, and technology sectors concentrated in Greater Boston. The Millionaires Tax primarily affects residents in these high-income industries.
Is this state income tax calculator free to use for Massachusetts?
Yes, this state income tax calculator is 100% free with no signup required. It includes Massachusetts-specific tax rates and calculates your estimated state and federal tax liability instantly.