Massachusetts Salary & Paycheck Calculator 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 absence of pre-tax 401(k) treatment at the state level. MA doesn't conform to federal §401(k) pre-tax rules — your federal AGI shows the deferral, but your MA taxable wages don't. 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. MA doesn't conform to federal §401(k) pre-tax — meaning every $24,500 of 401(k) deferral skips federal tax but still gets hit by 5% MA state tax. The trade-off: MA-tax-already-paid 401(k) withdrawals come out tax-free at the state level in retirement.

The single highest-leverage tactic for MA W-2 earners is maxing 457(b) (where available — public-sector and certain non-profit employers only), since MA does conform to federal §457(b) pre-tax treatment, while §401(k) and §403(b) deferrals don't avoid the MA 5% rate. Public-sector MA employees with 457(b) access save $1,225+/year vs equivalent 401(k) deferrals at the state layer. For the broader MA W-2 base, HSA contributions remain pre-tax at both federal and MA layers, making HSA the single most valuable shelter category in Massachusetts. 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.