Finance & Money
Self-Employment Tax Calculator - Estimate self-employment tax and quarterly payments.
Estimate self-employment tax and quarterly payments.
Formulas and edge cases are reviewed against authoritative references before publication. For methodology, editorial standards, or corrections, use the links below.
Frequently asked questions
What is self-employment tax?
Both employer and employee portions of Social Security and Medicare (15.3% total).
When are quarterly taxes due?
April 15, June 15, September 15, January 15 of the following year.
Can I deduct half of SE tax?
Yes, you can deduct the employer-equivalent portion (7.65%) from income.
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About this tool
This Self-Employment Tax Calculator turns your inputs into practical results. Provide Business Expenses, Gross Income, and Filing Status to calculate SE Tax and Income Tax.
Adjust values to compare scenarios and see how sensitive the result is. The calculation uses the numbers as entered, so double-check units and expect small differences from rounding in the displayed totals.