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
Inputs
- Gross Income
- Business Expenses
- Filing Status
- Quarterly Payments Made
- Single
- Married
- Head of household
Results
- Net Profit
- SE Tax
- Income Tax
- Quarterly Payment Due
When precision matters, guesswork falls short. The Self-Employment Tax Calculator applies the correct formula to the values you enter and returns a clear result. The required inputs are gross income, business expenses, filing status, quarterly payments made, single, married and head of household. Once provided, the result — net profit, se tax, income tax and quarterly payment due — appears instantly. The rule of 72 offers a quick estimate: divide 72 by the annual rate to approximate doubling time.
Small changes in interest rates or time horizons can dramatically shift outcomes. Tax implications can significantly alter net returns, so treat these results as a starting point. Whether you need to estimate self-employment tax and quarterly payments for a quick check or a thorough analysis, this tool adapts to both. Whether saving for retirement or evaluating a loan, running the numbers removes guesswork. Run the calculation with your best-case and worst-case assumptions to bracket the likely outcome. Factor in inflation when projecting long-term growth; a nominal rate of 7% with 3% inflation yields roughly 4% real growth.