Sources & Methodology
Methodology: Massachusetts income tax = (gross - pre-tax deductions) x 5.0%. Federal income tax calculated using 2025 IRS Publication 15-T percentage method brackets annualized by pay frequency: Single standard deduction $15,000, Married Filing Jointly $30,000, Head of Household $22,500. 2025 brackets: 10% to $11,925, 12% to $48,475, 22% to $103,350, 24% to $197,300, 32% to $250,525, 35% to $626,350, 37% above. Social Security = (gross - health insurance) x 6.2%, capped at $176,100 annual wage base. Medicare = (gross - health insurance) x 1.45%. Additional Medicare surtax of 0.9% on annual wages exceeding $200,000 (single) or $250,000 (married). Pre-tax 401k and health insurance reduce federal, MA, and FICA (health only for FICA) taxable income.
Last reviewed: March 2026 — rates verified against 2025 MA DOR withholding guidance, IRS Publication 15-T tables, and SSA FICA rate announcements.
Massachusetts Paycheck Calculator -- Complete 2025 MA Tax Guide
Massachusetts has one of the most straightforward state income tax structures in the country — a flat 5% income tax rate on all wages and salaries. Unlike the 43 states with graduated income tax brackets, Massachusetts workers at every income level pay exactly the same 5% rate on their wages. This simplicity makes calculating your take-home pay considerably easier than in most states, though federal income tax still requires bracket calculations.
Massachusetts Take-Home Pay Formula -- How It Works
Massachusetts vs Other New England States -- 2025 Income Tax Comparison
| State | Tax Structure | Rate on $85K Salary | No Local Tax? |
|---|
| Massachusetts | Flat 5% | 5.0% (9% over $1M) | Yes -- no local tax |
| New Hampshire | No wage tax | 0% on wages | Yes |
| Rhode Island | Graduated 3 brackets | ~4.9% effective | Yes |
| Connecticut | Graduated 6 brackets | ~5.5% effective | Yes |
| Maine | Graduated 3 brackets | ~6.2% effective | Yes |
| Vermont | Graduated 5 brackets | ~6.6% effective | Yes |
Pre-Tax Deductions That Reduce Massachusetts Taxes
Contributing to pre-tax retirement accounts significantly reduces Massachusetts income tax. A $500 per month 401(k) contribution reduces annual Massachusetts taxes by $300 (5% of $6,000 annual contribution) plus federal tax savings and FICA savings simultaneously. Employer-sponsored health insurance premiums paid through a Section 125 cafeteria plan reduce Massachusetts taxable wages, federal taxable wages, and FICA taxable wages all at once — making them one of the most tax-efficient benefits available.
Health Savings Account (HSA) contributions through payroll are also pre-tax for all purposes. An employee contributing $3,850 (2025 single HSA limit) through payroll saves approximately $193 in Massachusetts taxes alone, plus federal income tax savings and the 7.65% FICA savings — totaling approximately $500 to $700 in combined tax savings depending on their federal bracket.
The Massachusetts Millionaires Tax (4% Surtax)
Effective January 2023, the Massachusetts Fair Share Amendment adds a 4% surtax on annual taxable income above $1,000,000, bringing the total Massachusetts tax rate to 9% on income above that threshold. The threshold is adjusted annually for inflation. For 2024, the adjusted threshold was approximately $1,053,750. The surtax applies to all income types including wages, business income, long-term capital gains, and interest and dividends above the threshold in a given tax year.
High earners with variable income near the threshold should plan carefully. Strategies include spreading income across tax years when possible, maximizing pre-tax retirement contributions (which reduce Massachusetts taxable income), and consulting a Massachusetts CPA about entity structure for business owners whose pass-through income might push them above the surtax threshold.
💡 Check your MA Form M-4 withholding: The Massachusetts M-4 (state equivalent of the federal W-4) determines how much your employer withholds for state income tax. If you have not filed a current M-4 with your employer, withholding defaults to the single rate with no exemptions — which may over-withhold for married employees or those with significant deductions. File an updated M-4 if your filing status, dependents, or deductions have changed since you were hired.
Frequently Asked Questions
What is the Massachusetts income tax rate? +
Massachusetts has a flat 5% income tax rate on all wages and salaries regardless of income level. There are no graduated brackets for wage income. High earners with annual income over $1,000,000 pay an additional 4% surtax under the Massachusetts Fair Share Amendment (effective 2023), bringing their total MA rate to 9% on income above the threshold. The threshold is adjusted annually for inflation.
How do I calculate Massachusetts take-home pay? +
To calculate Massachusetts take-home pay: start with gross pay, subtract pre-tax deductions such as 401k and health insurance premiums, multiply the remaining amount by 5% for MA income tax, then subtract federal income tax withholding based on IRS 2025 brackets and your filing status, Social Security at 6.2% up to the $176,100 wage base, and Medicare at 1.45%. The result is your net take-home pay per paycheck.
Does Massachusetts have local income tax? +
No. Massachusetts does not impose any local or city income taxes. Workers in Boston, Worcester, Springfield, Cambridge, Lowell, and all other Massachusetts municipalities pay only the state 5% flat income tax plus applicable federal taxes. This is an advantage compared to states like Ohio and Pennsylvania where many cities impose additional local income taxes of 1 to 3 percent.
What is the Massachusetts millionaires tax surtax? +
The Massachusetts Fair Share Amendment adds a 4% surtax on annual taxable income above $1,000,000, bringing the total Massachusetts income tax rate to 9% on income above that threshold. Effective January 2023, the threshold is adjusted annually for inflation. The surtax applies to all income types including wages, business income, and capital gains above the threshold in a given tax year.
Are Social Security benefits taxed in Massachusetts? +
No. Massachusetts does not tax Social Security retirement and disability benefits at the state level. Benefits are fully exempt from the Massachusetts 5% income tax. However, Social Security benefits may be partially subject to federal income tax depending on your combined income -- up to 85% of benefits can be federally taxable if your provisional income exceeds IRS thresholds.
How does Massachusetts tax compare to other New England states? +
Massachusetts has a flat 5% wage income tax rate, placing it in the middle of the New England range. New Hampshire taxes no wages at all. Rhode Island tops out at 5.99%. Connecticut at 6.99%. Maine at 7.15%. Vermont at 8.75%. Massachusetts has the simplest structure with no local taxes and no graduated brackets, making paycheck calculations straightforward compared to multi-bracket neighboring states.
What pre-tax deductions reduce Massachusetts income tax? +
Pre-tax 401k, 403b, and 457 contributions reduce Massachusetts taxable income. Employer-sponsored health insurance through a Section 125 cafeteria plan reduces MA income tax, federal income tax, and FICA taxes simultaneously. HSA contributions through payroll deduction also reduce Massachusetts taxable wages. A $500/month 401k contribution saves $300 per year in Massachusetts income taxes alone (5% of $6,000 annual contribution).
How often is Massachusetts income tax withheld? +
Massachusetts income tax is withheld from every paycheck and remitted to the Massachusetts DOR by your employer. Withholding is based on your MA Form M-4 elections, similar to the federal W-4. If no M-4 is on file, employers withhold at the single rate with no exemptions. You file Massachusetts Form 1 annually by April 15 to reconcile actual tax owed against amounts withheld throughout the year.