Massachusetts charges 5% flat + 4% surtax >$1M state income tax. Use the rsu tax calculator pre-loaded with Massachusetts rates.
Open RSU Tax Calculator →RSU vesting in Massachusetts triggers a flat 5% state income tax, treated as ordinary income just like your salary. Your employer typically sells shares at vesting to cover the combined federal, state, and FICA withholding, which can consume 35-50% of the vested shares depending on your income level. This calculator shows you exactly how many shares (or dollars) you keep after all Massachusetts tax layers are applied.
Massachusetts levies a flat 5% state income tax on all taxable income regardless of how much you earn. This makes tax planning straightforward: for every additional dollar you earn, 5 cents goes to Massachusetts. Massachusetts does not impose local income taxes, so the 5% flat rate is the only state-level income tax you owe.
The table below shows what you actually keep at five salary levels in Massachusetts, accounting for federal tax, FICA, and Massachusetts's flat 5% state tax.
See how Massachusetts compares to other Northeast states. Each link takes you to the rsu tax calculator landing page for that state.
For a comprehensive breakdown of Massachusetts’s tax structure, salary comparisons, cost-of-living analysis, and more, visit the full Massachusetts take-home pay page.