Massachusetts self-employment tax calculator
Estimate what self-employment costs you in Massachusetts: 15.3% SE tax on 92.35% of profit, 2026 federal income tax, the QBI deduction, and Massachusetts's 5% state income tax. The state rate is pre-filled — adjust it if your bracket differs.
Your numbers
What you'll owe
Estimated total tax
$14,740
≈ 24.6% of profit · set aside 25% of every deposit
What do you do? Tap one to tailor this.
Each quarterly payment
$3,685
Due ~Apr 15, Jun 15, Sep 15, Jan 15
- Net business profit
- $60,000
- Self-employment tax (15.3%)
- $8,478
- QBI deduction
- − $11,152
- Taxable income
- $29,209
- Federal income tax
- $3,262
- Massachusetts tax (estimate)
- $3,000
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Driving for work? Every 100 miles takes $72.50 off the profit you're taxed on.
Count my milesMassachusetts self-employed tax at a glance
| State income tax | 5% flat |
|---|---|
| Self-employment tax | 15.3% federal (12.4% Social Security + 2.9% Medicare) |
| Social Security wage base | $184,500 (2026) |
| Local income tax | No broad local income tax on business profit |
| Quarterly estimate dates | Federal and state: Apr 15, Jun 15, Sep 15, Jan 15 |
| Typical total rate on $100k profit | About 26.9% (~$26,915) |
What Massachusetts tax looks like at four profit levels
Single filer, standard deduction, 20% QBI deduction applied, Massachusetts rate of 5% included. Your own number depends on filing status and deductions — use the calculator above for that.
| Net profit | Self-employment tax | Federal income tax | Massachusetts tax | Total | Set aside monthly |
|---|---|---|---|---|---|
| $50,000 | $7,065 | $2,370 | $2,500 | $11,935 (23.9%) | $995 |
| $75,000 | $10,597 | $4,600 | $3,750 | $18,947 (25.3%) | $1,579 |
| $100,000 | $14,130 | $7,786 | $5,000 | $26,915 (26.9%) | $2,243 |
| $150,000 | $21,194 | $15,964 | $7,500 | $44,658 (29.8%) | $3,722 |
Self-employment tax in Massachusetts
Massachusetts uses a 5% flat rate, plus a 4% surtax on income above roughly $1M.
Massachusetts applies a flat 5% individual income tax on top of federal income tax and the 15.3% self-employment tax. The federal half never changes: 15.3% on 92.35% of net profit, then income tax on profit less half that SE tax, the standard deduction and up to 20% qualified business income.
The failure mode is cash, not arithmetic. Money lands, it gets spent, and the quarterly due date becomes a crisis. Hate Ledger moves the reserve out of reach the day each deposit clears, so the Massachusetts and federal bills are funded before you see the money.
Frequently asked questions
How much self-employment tax do you pay in Massachusetts?
Self-employment tax is federal: 15.3% on 92.35% of net profit, the same in Massachusetts as everywhere else. Massachusetts applies a flat 5% individual income tax on top of federal income tax and the 15.3% self-employment tax.
What is the total tax rate for self-employed people in Massachusetts?
Most Massachusetts self-employed filers land between 27% and 38% of net profit once federal income tax, the 15.3% SE tax and the 5% state rate are combined.
Do I file quarterly estimates in Massachusetts?
Yes — federal estimates when you expect to owe $1,000 or more, plus Massachusetts state estimates on roughly the same April, June, September and January schedule.
Are there local taxes on self-employment income in Massachusetts?
Massachusetts does not add a broad local income tax on self-employment earnings, so state and federal are the two layers to plan for.
Can an S-corp lower self-employment tax in Massachusetts?
It can, once profit is high enough. Payroll tax then applies only to a reasonable salary rather than all profit. Massachusetts state income tax still applies to the full amount, so the savings are federal.
Estimates only, using projected 2026 federal figures and state rates for planning. Not tax advice.
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