Self-Employment Tax Calculator
Estimate your self-employment tax and quarterly payments.
This tool provides educational estimates and general guidance only. It is not legal, tax, accounting, or financial advice. Always verify requirements with official government sources or consult a qualified professional before making decisions.
Your estimate will appear here
Enter your net profit to estimate self-employment tax.
What this tool does
Self-employed people and single-member LLC owners pay self-employment tax — Social Security and Medicare — on their net business profit. This calculator estimates that tax and what to set aside each quarter.
How it’s calculated
Self-employment tax applies to 92.35% of your net profit at a combined 15.3% rate (12.4% Social Security up to the annual wage base, plus 2.9% Medicare). You can deduct half of it on your income tax return.
Important limitations
This estimates self-employment tax only — not federal or state income tax — and uses simplified rules. Always confirm your numbers with a qualified tax professional.
Frequently asked questions
It’s the Social Security and Medicare tax (a combined 15.3%) that self-employed people and single-member LLC owners pay on their net business profit. Employees split this with an employer; self-employed people pay both halves but can deduct half on their income tax return.
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