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Calculate self-employment tax (SE tax), federal income tax, and quarterly estimated payments for freelancers and 1099 workers.
Estimate SE tax, federal income tax, and quarterly estimated payments for freelancers and business owners (2026).
Total Self-Employment Tax
$11,304
SS: $9,161 + Medicare: $2,143
Federal Income Tax
$7,971
Total Tax Owed
$19,274
Quarterly Payment
$4,819
SE Tax Deduction
$5,652
Effective Total Rate
24.09%
Net After All Taxes
$60,726
Estimated Tax Due Dates
Each payment: $4,819
| Tax Component | Basis | Amount |
|---|---|---|
| Social Security (SE tax) | 12.4% on net earnings ≤ $176,100 | $9,161 |
| Medicare (SE tax) | 2.9% on all net earnings | $2,143 |
| Federal Income Tax | Progressive brackets (2026) | $7,971 |
| Additional Medicare Tax | 0.9% above $200,000 | $0 |
| Total Tax | Effective rate 24.09% | $19,274 |
Adjusted SE Income
$80,000
SE Tax Deduction (50%)
− $5,652
Adjusted Gross Income
$74,348
Federal Taxable Income
$59,348
Self-Employment Tax Calculator applies 15.3% SE tax to 92.35% of net SE income (SS portion capped at $176,100 wage base), deducts 50% of SE tax from AGI, applies 2026 federal income brackets, adds 0.9% Additional Medicare Tax above $200K/$250K, and divides total by 4 for quarterly payments.
Calculate your total self-employment tax (SE tax), federal income tax, and quarterly estimated payments as a freelancer, contractor, or small business owner. Includes the SE tax deduction.
Enter your net self-employment income (revenue minus business expenses)
Add any W-2 wages to determine the correct Social Security wage base used
Enter any additional business deductions to reduce taxable SE income
See your quarterly estimated tax due dates and amounts
Net earnings = adjusted SE income × 0.9235. SS portion = min(net earnings, max(0, $176,100 − W-2 income)) × 12.4%. Medicare = net earnings × 2.9%. SE deduction = total SE tax × 0.5. Taxable income = max(0, SE income + W-2 − SE deduction − $15,000 standard deduction). Additional Medicare Tax = max(0, total income − threshold) × 0.9%. Quarterly estimates = total annual tax ÷ 4.
Self-employment tax is 15.3% — 12.4% for Social Security (up to $176,100 in 2026) and 2.9% for Medicare (no cap). This applies to 92.35% of your net SE income. You also get to deduct 50% of SE tax from your federal income tax.
Yes, if you expect to owe $1,000+ in federal taxes for the year. Quarterly due dates in 2026: April 15, June 16, September 15, and January 15, 2027. Underpayment can result in a penalty.
Yes. Business expenses (equipment, software, home office, health insurance, retirement contributions) reduce your net SE income, which lowers both SE tax and income tax. The self-employed health insurance deduction and Solo 401(k) contributions can reduce taxable income significantly.
An extra 0.9% Medicare surtax applies to combined wages and SE income above $200,000 (single) or $250,000 (married filing jointly). This is separate from the standard 2.9% Medicare tax and is not matched by an employer.
See exactly how much of your income falls into each federal tax bracket — with marginal vs effective rate breakdown.
Calculate your 2026 federal income tax with bracket-by-bracket breakdown.
Estimate your take-home pay after federal, FICA, state taxes, 401(k), and health premiums.