Massachusetts income tax
MAMassachusetts uses a progressive income tax structure with 2 brackets and a top marginal rate of 9.00%.
- Top marginal rate
- 9.00%
- Brackets
- 2
- Structure
- Progressive — multiple brackets
- Last legislated change
- 2023
Note. 4% surtax on income over $1M (Fair Share Amendment).
Source: https://www.mass.gov/orgs/massachusetts-department-of-revenue. Last reconciled 2026-05-03.
Coming in v0.2
Full Massachusetts income tax calculator
We're building per-state take-home calculators that account for every bracket, deduction, and local levy. For v0.1 we're shipping the top-marginal summary and source link only. Honest: we'd rather ship one polished mortgage calculator and an accurate state tax index than fake calculators for all 50 states.