Massachusetts charges 5% flat + 4% surtax >$1M state income tax. Use the self-employment tax calculator pre-loaded with Massachusetts rates.
Open Self-Employment Tax Calculator →Freelancing in Massachusetts means stacking a flat 5% state income tax on top of the 15.3% self-employment tax and federal income tax. The combined marginal rate for freelancers here can exceed 42% on income in the 22% federal bracket. Careful quarterly estimated payment planning is critical to avoid underpayment penalties. This calculator factors in Massachusetts's state tax and the deductible half of SE tax to give you an accurate picture.
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 self-employment 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.