When you work as a freelancer, contractor, or run your own business, you don't have an employer withholding taxes from a paycheck. Instead, you're responsible for paying self-employment (SE) tax yourself — and if this is your first year self-employed, the 15.3% rate can come as a shock.
This guide explains everything you need to know about self-employment tax in 2026 — what it is, how to calculate it, and how to legally reduce what you owe.
Self-employment tax is how the IRS collects Social Security and Medicare contributions from people who work for themselves. When you're a W-2 employee, your employer pays half of these taxes on your behalf. When you're self-employed, you pay both halves yourself — which is why the rate is 15.3% instead of the 7.65% employees see on their pay stubs.
SE tax is not income tax. It's a separate tax on top of your federal and state income taxes. Many new freelancers confuse these. You pay SE tax AND income tax — they're calculated separately.
You must pay SE tax if your net self-employment income is $400 or more in a tax year. This applies to:
| Tax Component | Rate | 2026 Wage Base |
|---|---|---|
| Social Security | 12.4% | First $184,500 of net SE income |
| Medicare | 2.9% | No limit |
| Additional Medicare | 0.9% | Net income over $200,000 (single) |
| Total SE Tax | 15.3% | Up to $184,500; 2.9% above |
The Social Security wage base of $184,500 is the 2026 figure from the Social Security Administration. Once your net SE income exceeds this amount, you stop paying the 12.4% Social Security portion — you only continue paying the 2.9% Medicare tax on income above that level.
The IRS has a specific calculation method for SE tax — it's not simply 15.3% of your revenue. Here's the exact process:
Net SE income = Gross business revenue − Business expenses
You don't pay SE tax on 100% of your net income. You multiply by 0.9235 (92.35%) first. This accounts for the employer-equivalent portion — just as employers deduct their half of FICA before reporting wages.
Multiply the result by 15.3% (or 2.9% on amounts above the SS wage base).
Here's the good news: the IRS allows you to deduct half of your SE tax from your gross income when calculating your federal income tax. This is an above-the-line deduction — you get it even if you don't itemize.
Self-employed people must pay taxes quarterly — waiting until April to pay the whole year results in an underpayment penalty. The 2026 quarterly due dates are:
| Quarter | Income Period | Due Date |
|---|---|---|
| Q1 2026 | January 1 – March 31 | April 15, 2026 |
| Q2 2026 | April 1 – May 31 | June 16, 2026 |
| Q3 2026 | June 1 – August 31 | September 15, 2026 |
| Q4 2026 | September 1 – December 31 | January 15, 2027 |
Pay online at IRS Direct Pay (irs.gov/payments) — it's free and takes 5 minutes.
Enter your net self-employment income and get your exact SE tax, the deductible half, and quarterly payment amounts for 2026.
Open SE Tax Calculator →Here's why self-employment feels more expensive — and what to factor in when comparing freelance vs salaried income:
| Tax Component | W-2 Employee | Self-Employed |
|---|---|---|
| Social Security | 6.2% (employee only) | 12.4% (both halves) |
| Medicare | 1.45% | 2.9% |
| Total FICA / SE Tax | 7.65% | 15.3% |
| Employer pays additional | 7.65% (you don't see it) | N/A (you pay it all) |
| Deductible half | No deduction | Half is deductible from income |
The real tax difference is less extreme than it looks — the employer's 7.65% match on a W-2 job is money you effectively "lose" as an employee too (it could otherwise be your salary). The SE tax deduction also partially compensates. Still, self-employed workers do pay somewhat more in total employment taxes.