Calculadora de cheque Massachusetts 2026

Withholding on a Massachusetts paycheck flows through Form M-4, the state's withholding exemption certificate. The flat 5% rate makes the math simple at the wage layer, but two MA-specific complications appear on the stub: PFML (Paid Family and Medical Leave) at a combined 0.88% premium with the employee share at roughly 0.42%, and the much smaller personal exemption ($4,400 single) compared to the federal standard deduction. 401(k) deferrals reduce MA taxable wages just as they do federally — MA conforms to federal pre-tax elective-deferral treatment. Boston has no city income tax (unlike NYC or Philadelphia), and no Massachusetts municipality has a local income tax.

Take-home math at three tiers, Massachusetts single filer 2026 (no Millionaire's surtax): $60,000 → about $4,400 federal + $4,590 FICA + $2,780 MA state (after $4,400 personal exemption) + $252 PFML = $12,022 deductions, take-home $47,978 (80%). $100,000 → $11,800 federal + $7,650 FICA + $4,780 MA + $420 PFML = $24,650, take-home $75,350 (75%). $150,000 → $24,000 federal + $9,275 FICA + $7,280 MA + $630 PFML = $41,185, take-home $108,815 (73%). MA's $4,400 personal exemption is much smaller than federal's $16,100 standard deduction, so MA taxable income runs noticeably higher than federal AGI for most filers.

Massachusetts's signature tax-side variable is the 4% Fair Share surtax on income above $1 million (Question 1, 2022 ballot, effective tax year 2023). For pure-W-2 earners under $1M, the rate is 5% flat. For partnership-income filers, RSU recipients with large vest events, business owners with sale proceeds, and senior law/finance professionals crossing $1M in any given year, the marginal rate jumps to 9% on the excess. One genuine MA non-conformity to know: traditional IRA contributions are NOT deductible on the MA return (unlike 401(k) deferrals, which reduce MA wages normally) — IRA basis accumulates at the state level and is recovered tax-free at withdrawal.

The single highest-leverage tactic for MA W-2 earners is maxing the pre-tax 401(k) — a $24,500 deferral avoids the 5% MA rate ($1,225/year) on top of the federal savings, since MA conforms to federal elective-deferral treatment. HSA contributions are also pre-tax at both federal and MA layers. The one shelter that does NOT work at the MA layer is the traditional IRA deduction — MA never adopted it, so IRA savers accumulate MA basis instead. Pre-Millionaire's-surtax filers expecting a $1M+ event should also evaluate Massachusetts PTET election or pre-event residency change to NH (no income tax), since the 4% surtax on $5M of business sale proceeds is $200,000 of avoidable MA tax.