Massachusetts paycheck quick facts
| MA state income tax | 5% flat (since 2020) |
|---|---|
| Millionaire\'s Tax surtax | +4% on MA taxable income above $1M |
| MA personal exemption (2026 est.) | $4,500 single · $9,000 MFJ · $7,000 HoH |
| MA dependent exemption | $1,000 per dependent |
| MA PFML (employee share, 25+ employees) | ~0.46% on wages up to $183,600 |
| Local income tax | 0% (Boston, Cambridge, all MA cities) |
| Federal income tax | 10% – 37% (2026 brackets) |
| FICA | 6.2% SS (cap $183,600) + 1.45% Medicare |
How your Massachusetts paycheck works
Massachusetts has a simple flat-rate state tax (5%) and no local income tax, which makes most paychecks easy to predict. The major complication for high earners is the Fair Share Amendment (Millionaire\'s Tax), approved by voters in 2022. It adds 4% on top of the 5% rate for Massachusetts taxable income above $1 million — making the effective top rate 9% on that income.
Massachusetts is also one of the states with a meaningful state-level Paid Family and Medical Leave program. The combined contribution is around 0.88% of wages; the employee share is typically 0.46% for larger employers. Smaller employers (under 25 employees) often pay the entire premium themselves.
FICA: Social Security and Medicare
Every W-2 employee in the US pays FICA, regardless of state. It has two parts:
- Social Security — 6.2% of wages up to the annual wage base ($183,600 for 2026). Earnings above the cap are not taxed for Social Security.
- Medicare — 1.45% of all wages with no cap. If you earn above $200,000 (single) or $250,000 (married filing jointly), an additional 0.9% Additional Medicare Tax applies to the portion above that threshold.
Your employer pays a matching 6.2% + 1.45% (the Additional Medicare is employee-only). Self-employed workers pay both halves — known as SECA: 12.4% Social Security + 2.9% Medicare.
Federal income tax brackets (2026)
The IRS uses a progressive bracket system. The first dollars you earn are taxed at 10%, the next at 12%, and so on up to 37% for high earners. Your marginal rate is the bracket your last dollar falls into; your effective rate is your total tax divided by gross — almost always lower than your marginal rate.
| Single / MFS | MFJ | Rate |
|---|---|---|
| $0 – $12,150 | $0 – $24,300 | 10% |
| $12,150 – $49,450 | $24,300 – $98,900 | 12% |
| $49,450 – $105,700 | $98,900 – $211,400 | 22% |
| $105,700 – $201,775 | $211,400 – $403,550 | 24% |
| $201,775 – $256,225 | $403,550 – $512,450 | 32% |
| $256,225 – $640,600 | $512,450 – $768,700 | 35% |
| $640,600+ | $768,700+ | 37% |
The 2026 standard deduction reduces taxable income before brackets apply: $15,750 single, $31,500 married filing jointly, $23,625 head of household.
Pre-tax deductions that reduce your taxable income
The biggest lever you control on your paycheck is your pre-tax contributions. These come out of your gross pay before federal income tax is calculated, so every dollar contributed saves you your marginal rate's worth of tax.
- Traditional 401(k) — up to $24,500 for 2026 ($31,000 if 50+). Reduces federal taxable income but not FICA wages.
- HSA (Health Savings Account) — up to $4,400 single / $8,750 family in 2026, only available with a high-deductible health plan. Triple-tax-advantaged: pre-tax going in, tax-free growth, tax-free withdrawals for medical expenses.
- FSA (Flexible Spending Account) — up to $3,400 for 2026. Use-it-or-lose-it (with limited rollover). Pre-tax for both federal income tax and FICA.
- Employer health, dental, and vision premiums — typically pre-tax via a Section 125 cafeteria plan.
How to use this calculator
- Pick Salary or Hourly.
- Enter your annual salary (or wage + hours per period).
- Choose your pay frequency — most US employers pay bi-weekly (26 paychecks/year) or semi-monthly (24 paychecks/year).
- Pick your filing status. It controls the brackets and standard deduction.
- If you have qualifying children under 17, enter the count to claim the Child Tax Credit (up to $2,000 per child).
- Expand Pre-tax deductions if you contribute to 401(k), HSA, FSA, or pay health premiums pre-tax.
The result updates instantly. The "Take-home per paycheck" figure is what should hit your bank account; the breakdown table shows exactly where the rest goes.
Sources
The federal tax constants used here come directly from the 2026 authoritative sources:
- IRS Revenue Procedure 2025-32 — 2026 inflation-adjusted brackets, standard deduction, Child Tax Credit amounts.
- SSA Cost-of-Living Adjustment announcement — 2026 Social Security wage base ($184,500).
- IRS Publication 15-T — Federal Income Tax Withholding Methods, including Additional Medicare Tax thresholds.
- IRS Form W-4 — 2020+ five-step withholding worksheet referenced for filing-status and dependent inputs.
Calculator is provided for estimation only and does not constitute tax advice. For tax filing, consult the IRS forms above or a licensed tax professional.
The Millionaire\'s Tax in detail
The Fair Share Amendment took effect for the 2023 tax year. It applies to Massachusetts taxable income — meaning your AGI minus the personal exemption, dependent exemptions, and any other state-level deductions. The threshold ($1 million as of 2023) adjusts for inflation annually.
The surtax has significantly affected high-earning Massachusetts residents — particularly those with concentrated RSU vesting, IPO events, or one-time large bonuses. Tax planning around the timing of large income events has become more important since 2023.
How to increase your Massachusetts take-home pay
- Max your 401(k). Saves federal + MA tax at your marginal rate. At 22% federal + 5% MA, that\'s 27% marginal savings.
- HSA contributions are the most efficient. They skip federal income tax, MA tax, AND FICA. Triple-tax-advantaged.
- Section-125 cafeteria plan for medical, dental, vision premiums. Pre-tax for federal, MA, and FICA.
- If you\'re close to $1M MA taxable income, work with a CPA on timing — deferred compensation, RSU vest planning, or charitable bunching can keep you below the surtax threshold.
- Consider 529 plan contributions. Massachusetts offers a state tax deduction (up to $1,000 single / $2,000 MFJ) for contributions to the MA 529 college savings plan.
Compare Massachusetts to neighbors and competitors: New York, New Hampshire, New Jersey, California.