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Self-Employment Tax Calculator

Enter your self-employment income

Only affects the 0.9% Additional Medicare Tax threshold.

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Schedule C profit after business expenses (or partnership self-employment income). Enter a loss as a negative number.

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Box 3 + box 7 of any W-2s. Wages already taxed for Social Security use up part of the wage base.

More options
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Schedule F profit or loss.

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Box 5 of your W-2s. Leave blank to use the Social Security wages figure.

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Wages from a church that elected out of FICA. Most people leave this at 0.

Your results

Self-employment tax

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Deductible half

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Additional Medicare Tax

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Total owed on SE income

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Net earnings from self-employment–
Social Security part (12.4%)–
Medicare part (2.9%)–
Share of your profit–
Set aside per quarter–

Tax year 2026 rules and a $184,500 Social Security wage base. Income tax on your profit is separate — the deductible half lowers it.

How the tax is worked out

Line by line, in the same order as Schedule SE and Form 8959.

StepAmount

Results are estimates for educational purposes and are not financial, tax or legal advice.

Work out the 2026 Social Security and Medicare tax on your freelance or business profit, the half you can deduct, and how much to set aside each quarter. The income tax calculator is free to use with no sign-up, and works on desktop and mobile.