The Complete Guide to Self-Employment Tax in 2026

What Is Self-Employment Tax?

Self-employment tax is the Social Security and Medicare tax that self-employed individuals must pay. Unlike traditional employees who split these taxes with their employer, self-employed workers are responsible for the full amount.

In 2026, the self-employment tax rate remains 15.3%, comprised of:

How to Calculate Your Self-Employment Tax

The calculation follows these steps:

1. Determine net self-employment income: Gross income minus business expenses

2. Apply the 92.35% multiplier: Only 92.35% of your net income is subject to SE tax

3. Calculate Social Security portion: 12.4% of taxable base, capped at the wage base limit

4. Calculate Medicare portion: 2.9% of the entire taxable base

5. Add Additional Medicare Tax if applicable

6. Deduct half: You can deduct 50% of your SE tax from your income tax

Key Deductions for Self-Employed Workers

Don't miss these important deductions:

Quarterly Estimated Payments

If you expect to owe $1,000 or more in taxes, you must make quarterly estimated payments. The deadlines for 2026 are:

Missing these deadlines can result in underpayment penalties.

Tips to Reduce Your Self-Employment Tax

1. Maximize business deductions to lower your net income

2. Consider an S-Corp election to pay yourself a reasonable salary

3. Contribute to retirement accounts for tax-deferred growth

4. Track every business expense using accounting software

5. Work with a qualified tax professional for personalized advice