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How Bonuses Are Taxed in Massachusetts (2026)
A bonus paid on a separate check in Massachusetts has a flat 22% federal tax withheld (37% on cumulative supplemental wages over $1,000,000 in a year), 7.65% FICA, and Massachusetts's flat 5% state income tax. Withholding is not a higher tax rate — it is just how much your employer holds back up front; your actual tax on the bonus is settled when you file, and any over-withholding comes back as refund.
| Component | Rate on the bonus |
|---|---|
| Federal income tax (supplemental, percentage method) | 22% flat · 37% above $1,000,000/yr |
| Social Security | 6.2% (up to $184,500 of total wages) |
| Medicare | 1.45% · +0.9% above $200,000 |
| Massachusetts state tax | 5% flat |
Some employers instead use the aggregate method — adding the bonus to your regular paycheck and withholding as if that were every check — which can withhold more or less than the flat 22%. The calculator above uses the flat-rate (percentage) method.
Massachusetts Bonus Take-Home by Amount (2026)
Flat-rate (percentage) method, single filer, bonus paid separately on top of a $65,000 salary. Enter your own numbers in the calculator above — this table is a starting point.
| Bonus | Federal (22%) | FICA | Massachusetts tax | Take-home |
|---|---|---|---|---|
| $1,000 | $220 | $77 | $50 | $654 |
| $2,500 | $550 | $191 | $125 | $1,634 |
| $5,000 | $1,100 | $383 | $250 | $3,268 |
| $10,000 | $2,200 | $765 | $500 | $6,535 |
| $15,000 | $3,300 | $1,148 | $750 | $9,803 |
| $25,000 | $5,500 | $1,913 | $1,250 | $16,338 |
How Massachusetts Paycheck Tax Is Calculated (2026)
Source: Massachusetts Department of Revenue| Flat state rate | 5% |
|---|---|
| Personal exemption | $4,400 |
Federal Tax & FICA (shared across all states)
| Filing status | Standard deduction |
|---|---|
| Single | $16,100 |
| Married Filing Jointly | $32,200 |
| Head of Household | $24,150 |
| Federal brackets (all filing statuses) | 10% / 12% / 22% / 24% / 32% / 35% / 37% |
|---|---|
| Social Security | 6.2% up to $184,500 wage base |
| Medicare | 1.45% on all wages, +0.9% above $200,000 single/HoH, $250,000 MFJ |
⚠️ Massachusetts's married-filing-jointly and head-of-household state brackets have not yet been independently verified against the primary source above — this calculator uses Massachusetts's single-filer brackets as an estimate when those statuses are selected.
Guideline version 2026-MA-v1 · Last verified 2026-08-19
Massachusetts Bonus Tax FAQ
What is Massachusetts's state income tax rate?
Massachusetts charges a flat 5% rate for tax year 2026.
How much is take-home pay on $65,000 in Massachusetts?
On a $65,000 gross salary, a single filer in Massachusetts takes home roughly $51,377.5/year (about $4,281.46/month) after federal tax, FICA, and state tax.
What deductions does Massachusetts apply before taxing my income?
Massachusetts applies a $4,400 personal exemption, plus an additional 4% surtax on income over $1,107,750, before the flat 5% rate. See the "How Massachusetts Paycheck Tax Is Calculated" section above for the exact formula.
Does this estimate change if I'm married or have dependents?
This calculator uses single-filer figures only (v1 scope). Married filing jointly typically uses different federal and Massachusetts state brackets and a larger standard deduction — your actual take-home pay will differ. Dependents can also reduce federal withholding via the W-4. Check Massachusetts Department of Revenue's married-filing-jointly tables for a precise figure.
Methodology & Source
Massachusetts state tax figures sourced from Massachusetts Department of Revenue (https://www.mass.gov/orgs/massachusetts-department-of-revenue), citing Mass. Gen. Laws ch. 62 § 4 — flat 5% plus 4% surtax on income over $1M (2022 ballot amendment). Federal brackets, standard deductions (single/MFJ/HoH), and FICA constants sourced from the IRS (Revenue Procedure 2025-32; married-filing-jointly Additional Medicare threshold of $250,000 is a separate, unindexed statutory figure). Massachusetts's married-filing-jointly and head-of-household figures are not yet independently verified and currently fall back to single-filer brackets — see the caveat in the formula section above.
Bonus federal withholding uses the flat supplemental-wage rate (22%, 37% above $1,000,000 cumulative supplemental wages/year), per IRS Publication 15 (Circular E), Employer's Tax Guide, 2026 edition — the alternative "aggregate method" is not modeled. Massachusetts publishes no separate supplemental withholding rate, so the calculator estimates the state tax on the bonus from your marginal bracket.
This is an estimate based on standard single-filer federal, FICA, and MA state calculations. Actual withholding may differ based on your W-4 elections, pre-tax deductions, and other factors. The millionaire's surtax threshold is inflation-indexed annually; $1,107,750 is the most recently published figure at last-verified date — confirm current threshold at mass.gov before relying on this near the boundary.
Guideline version: 2026-MA-v1 · Effective: 2023-01-01 · Last verified: 2026-08-19