Massachusetts Paycheck Calculator

How Massachusetts paychecks are calculated

A Massachusetts paycheck has more moving parts than a flat-rate state's. Start with gross pay — a salary, or an hourly rate times weekly hours times 52. Subtract pre-tax elections (traditional 401(k)/403(b), HSA, and §125 health premiums). Massachusetts builds its tax off Massachusetts adjusted gross income, which starts at federal AGI, so those deferrals lower the state base too.

Federal income tax applies the 2026 brackets after the standard deduction. FICA runs on gross — pre-tax deferrals do not shrink it — at 6.2% for Social Security up to $184,500 and 1.45% for Medicare on every dollar. Massachusetts income tax is a flat 5% on MAGI, with a 4% surtax on the slice above roughly $1,107,750. And a separate 0.46% PFML employee premium comes off post-tax.

Everything runs client-side. The 2026 figures from the Massachusetts Department of Revenue and the Department of Family and Medical Leave are baked into the code that recalculates on every keystroke — no submit button, no account, and nothing leaves your device.

The Massachusetts income tax rate

Massachusetts taxes ordinary income at a single 5% rate for every filing status — the legacy of a years-long ballot-question slide down from the old 5.9% rate. For almost every working household that flat rate is the whole story. It sits above the flat rates in Arizona and Pennsylvania but well below the graduated top brackets in California and New York. The one exception is the surtax described below, which only reaches income above a seven-figure line.

The Millionaire Sur Tax

The Fair Share Amendment adds 4% on top of the 5% rate for Massachusetts taxable income above an inflation-indexed threshold — about $1,107,750 in 2026. That makes 9% the marginal rate on income over the line, one of the highest in the country. The surtax only touches the dollars above the threshold and the threshold is identical for every filing status, so it is a targeted add-on, not a new bracket system. The table shows the marginal rate flipping over from 5% to 9%, generated by the engine.

Note the PFML column caps out — the employee premium is limited to 0.46% of wages up to the $184,500 Social Security wage base.

Massachusetts withholding is not the same as your tax bill

Three different numbers get called "your Massachusetts tax," and a paycheck calculator should be honest about which one it shows. Your annual liability is what you owe on Form 1 after the personal exemption and every credit. Your paycheck withholding is what comes off each period under the Circular M tables, driven by the exemptions you claim on Form M-4 — the state's version of the federal W-4, where you pick a filing status and an extra flat dollar amount if you want more held back. The two rarely match to the dollar, which is why you either owe or get a refund in April.

This calculator estimates Massachusetts at the flat 5% on your Massachusetts AGI, plus the 4% surtax above the $1,107,750 threshold — it does not subtract the per-paycheck Form M-4 exemptions, so treat the state line as a conservative, slightly-high estimate and use the Department of Revenue's M-4 worksheet for the precise figure your employer withholds.

Massachusetts PFML — the payroll premium

Unlike most flat-rate states, Massachusetts withholds a payroll premium from employees on top of income tax. Paid Family and Medical Leave (PFML) is a state insurance program that replaces part of your wages during leave for a new child, a serious health condition, or certain family needs. The 2026 total premium is 0.88% of eligible wages, and the employee share is 0.46% — 0.28% for the medical leave portion and 0.18% for family leave. The individual premium is capped at the Social Security wage base, so it stops once your year-to-date wages pass $184,500.

The key accounting point: PFML is a post-tax payroll deduction. It reduces your take-home pay but not your federal or Massachusetts taxable income, and it is not an income tax. On the default $75,000 salary it comes to about $345 a year. How much of the 0.88% premium you actually bear depends on employer size: at employers with 25 or more covered individuals the employee share is capped at 0.46% and the employer pays the rest, but a small employer with fewer than 25 covered individuals is not required to pay the employer share, so the whole 0.88% can fall on the employee. Tick the PFML box above to model that small-employer case.

Massachusetts paycheck deductions at a glance

Federal income tax and FICA

Federal tax is the largest deduction on a Massachusetts paycheck and the only progressive layer below the surtax threshold. For a single filer, federal income tax on the default $75,000 salary runs $7,670 against Massachusetts' $3,750. The 2026 brackets below apply after the standard deduction of $16,100 single, $32,200 joint, $24,150 head of household, plus $2,050 per qualifying factor for age 65 or older or blind.

FICA is separate from income tax. Social Security takes 6.2% up to $184,500 for 2026, then stops for the rest of the year. Medicare takes 1.45% on every dollar with no ceiling, plus 0.9% above $200,000 single or $250,000 joint. The same $184,500 base also caps the MA PFML premium.

Weekly, bi-weekly, semi-monthly, and monthly pay in Massachusetts

For the flat 5% portion, Massachusetts is almost indifferent to pay frequency — a percentage of annual MAGI divided across 52, 26, 24, or 12 periods gives the same yearly total, and the surtax threshold is an annual figure too. The lines that genuinely move are the capped ones: Social Security and MA PFML both stop at the $184,500 wage base, so a higher earner's later checks keep more of each dollar once year-to-date wages pass the cap.

Bi-weekly (26 checks) and semi-monthly (24 checks) are genuinely different: bi-weekly produces two extra paychecks a year, not two larger ones.

Massachusetts hourly paycheck calculator

Switch "How are you paid?" to Hourly and enter your rate and typical weekly hours. The calculator annualises with the standard convention — rate × hours per week × 52 — then runs the identical federal, FICA, Massachusetts income-tax, and PFML layers used for salaried workers. At $25 an hour for 40 hours, that is $52,000 of gross pay and about $791 of take-home per weekly check.

Two hourly caveats. Overtime hours push real annual earnings above rate × 40 × 52, so enter actual hours and add the overtime premium under Advanced options. And seasonal or part-year work means a 52-week annualisation overstates what you earn — divide your expected pay out yourself in that case.

Massachusetts take-home pay examples

Every number below was produced by the same engine running in the calculator above — none of it is estimated by hand. Adjust the inputs and your own results replace these instantly.

Massachusetts vs. other paycheck calculators

The same shared engine runs every state calculator here, so only the state rules change. Compare Massachusetts' flat 5% plus surtax with Illinois' flat 4.95%, Arizona's 2.5% election, Pennsylvania's local earned-income taxes, and Washington's no-income-tax-but-payroll-premiums model.

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PayAtlasUSA is an independent salary research site. It is not affiliated with ADP, Gusto, SmartAsset, or any payroll provider, and no third-party payroll service is connected to this calculator.