Massachusetts Paycheck Calculator

The Fair Share Amendment, approved by voters in 2022 and effective from 2023, added 4 percentage points to income above a threshold that indexes with inflation — roughly $1.08 million for 2026. Above that line, the marginal rate is 9% rather than 5%.

The threshold is applied per tax return, not per person, and Massachusetts requires couples who file jointly federally to file jointly at state level too. That creates a genuine marriage penalty at the top: two people each earning $700,000 would pay no surtax as individuals but face it on a joint return. This has driven a measurable amount of tax planning around the timing of income and equity compensation.

For the large majority of Massachusetts workers the surtax is irrelevant, and the effective state rate is a clean 5% on wage income.

Massachusetts runs one of the more generous paid leave programmes in the country, funded by a combined employer and employee contribution. The employee share for 2026 is up to 0.46% of eligible wages, capped at the Social Security wage base, so contributions stop once earnings pass that ceiling.

The programme covers both family leave — bonding with a new child, caring for a seriously ill relative — and the employee's own medical leave, with wage replacement scaled so lower earners receive a higher proportion of their pay.

Legislation passed in 2026 changes how employer contributions are allocated between the family and medical portions from January 2027, so the split will shift, though the employee-facing figure is not expected to move dramatically. As with any payroll programme, check your own payslip against the current published rate.

No Massachusetts city or town levies a local income tax. Boston, Worcester, Springfield and Cambridge all withhold only the state rate and PFML, which keeps the payslip simple relative to neighbouring Connecticut or nearby New York.

Massachusetts allows relatively few deductions. There is no standard deduction of the kind most states offer; instead the state provides personal exemptions and a small number of specific deductions, including one for commuter costs and another for rent paid, which is unusual and worth claiming if you rent in the state.

Short-term capital gains are taxed at a higher rate than ordinary income — a distinctive feature of the Massachusetts system, and a reason the flat 5% description does not extend to all income types. Social Security benefits are exempt from state tax.