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Self-Employment Tax Calculator: Estimate Your 2026 Self-Employment Tax and Learn How to Reduce It

If you’re earning 1099 income, you’re responsible for both sides of Social Security and Medicare. Use our Self-Employment Tax Calculator to estimate your 15.3% tax liability—and see how restructuring as an S-Corp or adding retirement plans could reduce your burden.

How it works

1. Enter Your Net Self-Employed Income

Input your profit after business expenses. This will be used to calculate your SE tax under 2026 IRS rules.

2. Add Optional Adjustments

Include things like retirement contributions or S-Corp salary (if applicable) to model different outcomes.

3. Review Your Estimated SE Tax

See exactly how much of your income will go to self-employment tax—and what you can do to reduce it legally.

Need Professional Tax Help?

Review your results with a tax professional to confirm whether an S-Corp is the right move for your business. If the numbers show potential savings, the next step is validating them with an expert. A personalized review can help confirm whether these estimates apply to your specific situation.

Frequently Asked Questions

Anyone earning net income from 1099 work, freelance, or business activity. It covers Social Security and Medicare and applies even if you owe no income tax.

It includes 12.4% for Social Security and 2.9% for Medicare. High earners may also be subject to the 0.9% additional Medicare tax.

Yes. If your business qualifies, switching to an S-Corp can reduce how much income is subject to self-employment tax. This calculator can help you compare outcomes.

Use it to set aside money for quarterly taxes—or book a strategy call to see how much we could help you legally reduce.