Massachusetts Paycheck Calculator
Estimate your take-home pay in Massachusetts, which taxes most wages at a flat 5% state rate, with an added 4% surtax that only kicks in for the portion of annual income above roughly $1 million.
California payroll premiums
Mandatory deductions that aren't income tax. They come out of your paycheck whether or not California taxes income.
- CA SDI1.3% (no cap)
1.3% of all wages, with no cap since 2024.
Your Form W-4
Optional. Skip this and you'll get the withholding for a W-4 with nothing claimed on it. The form has had no "allowances" since 2020 — dependents are now a dollar credit in Step 3.
The dollar total from Step 3, not a number of people — typically $2,200 per qualifying child and $500 per other dependent.
Interest, dividends or retirement income with no withholding of its own.
Only deductions beyond the standard deduction, from the Step 4(b) worksheet.
An extra dollar amount held from each paycheck, on top of the tax above.
This calculator provides estimates for informational purposes only. Actual paycheck amounts may vary based on your employer, benefits, local taxes, filing status, and tax elections.
Federal withholding calculation updated September 2026 using IRS Publication 15-T (2026).
Your estimate will appear here
Enter your pay details and click calculate to see your estimated take-home pay, tax breakdown, and annual income.
A note on the millionaire's surtax: This calculator's flat 5% rate is accurate for the vast majority of Massachusetts workers. But since 2023, income above roughly $1 million a year (an amount that adjusts annually for inflation, about $1.083 million for 2025) is taxed at an additional 4%, for a combined 9% on just that portion. If your income is anywhere near that threshold, the real number will run higher than this calculator's estimate.
Quick Answer
Massachusetts' flat state income tax rate is 5% for typical wages, and this calculator uses that exact rate along with federal income tax, Social Security (6.2%), and Medicare (1.45%). It also subtracts the Paid Family and Medical Leave premium that comes out of your pay — 0.18% for family leave plus 0.28% for medical leave, so 0.46% of wages up to the $184,500 Social Security maximum. It doesn't model the separate 4% millionaire's surtax that applies only to annual income above roughly $1 million, since that affects a small share of filers.
How It Works: Formula & Variables
Net Pay = Gross Pay − Federal Tax − State Tax (5% flat) − Social Security − Medicare − Other Deductions
- Gross Pay
- Your total earnings before any deductions, hourly rate times hours, or annual salary divided by pay periods.
- Federal Tax
- Calculated using progressive tax brackets based on your filing status and taxable income.
- State Tax
- A flat 5% of taxable income. Doesn't include the additional 4% surtax on annual income above roughly $1 million.
- Social Security
- 6.2% of gross pay, up to the annual wage base limit.
- Medicare
- 1.45% of gross pay, with no wage limit (plus 0.9% surtax above certain thresholds).
Worked Examples
Example 1: Hourly worker in Worcester
Sam works 40 hours a week at $22 an hour. Gross weekly pay is $880. After federal income tax (around $63.68), Massachusetts state tax (5% of taxable income, or $28.52), Social Security (6.2%, or $54.56), and Medicare (1.45%, or $12.76), estimated take-home pay lands at about $720.48 a week, roughly 82% of gross pay.
Example 2: Salaried employee in Boston
Taylor earns $75,000 a year, paid biweekly ($2,884.62 gross per paycheck), filing as Single. After federal tax, the 5% Massachusetts flat tax, Social Security, and Medicare, estimated take-home pay comes out to roughly $2,260 per paycheck.
Example 3: Married couple in the Boston suburbs
Jordan and Casey file Married Filing Jointly with a combined salary of $155,000 a year, paid biweekly ($5,961.54 gross per paycheck). After federal tax, Massachusetts' flat state tax, Social Security, and Medicare, estimated take-home pay comes out to roughly $4,640 per paycheck, about 78% of gross pay. Since their combined income is well under the millionaire's surtax threshold, no additional state tax applies beyond the standard 5%.
Key Concepts
A flat rate with one high-income exception: Massachusetts kept its long-standing flat income tax structure but added a surtax specifically targeting very high earners through a 2022 ballot measure, rather than moving to a full bracket system.
The surtax threshold moves with inflation: Unlike a fixed dollar cutoff, the roughly $1 million surtax threshold adjusts upward each year, so the exact number to watch for changes annually.
Historically called "Taxachusetts," now more moderate: Massachusetts' flat 5% rate is actually lower than several other Northeastern states' top marginal rates, even with the millionaire's surtax factored in for high earners.
No local income tax, unlike neighboring states with municipal taxes: Boston and every other Massachusetts city or town rely on property tax rather than a local income tax.
Useful for comparing job offers: If you're weighing a Massachusetts offer against one in New York or Connecticut, run both through a paycheck calculator, since flat versus bracket structures produce different results depending on income level.
Common Mistakes
Assuming everyone pays 9%: The 4% surtax only applies to the portion of income above roughly $1 million a year. Most workers pay just the standard 5% flat rate.
Adding a local income tax that doesn't exist: Massachusetts cities and towns, including Boston, don't charge their own income tax.
Comparing gross salaries across states: A $70,000 offer in Massachusetts and a $70,000 offer in New Hampshire don't translate to the same take-home pay. Always compare net pay, not gross.
Ignoring pre-tax deductions: 401(k) contributions and health insurance premiums lower your taxable income before both federal and state tax apply, so leaving them out understates your real take-home pay.
Frequently Asked Questions
Massachusetts charges a flat 5% state income tax on most wages, and this calculator uses that exact rate. High earners with more than roughly $1 million in annual income also owe an extra 4% surtax on the amount above that threshold, a separate charge this calculator doesn't model since it only affects a small share of filers.
Voters approved a constitutional amendment in 2022 adding a 4% surtax on annual income above roughly $1 million, on top of the regular 5% flat rate. That threshold adjusts for inflation each year, reaching about $1.083 million for 2025. It effectively creates a 9% top rate for income above the threshold, but only for that portion, not the whole income.
No. Massachusetts' 5% flat rate applies statewide, whether you work in downtown Boston, Worcester, or a small town in western Massachusetts. Cities and towns don't add their own income tax.
Federal income tax, Massachusetts' flat 5% state income tax, Social Security (6.2% up to the annual wage base), and Medicare (1.45%, plus 0.9% more for high earners). Massachusetts also runs its own Paid Family and Medical Leave payroll contribution, separate from income tax and not included in this calculator.
No. Massachusetts municipalities, including Boston, don't collect a separate city income tax. Local government funding there comes mainly from property tax.
Yes, switch between the Hourly and Salary tabs and enter your wage or annual salary along with your pay frequency. The state is already set to Massachusetts.
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