Self-Employment Tax Calculator

Applies your combined Social Security + Medicare self-employment rate to a base you choose. Check the factor if your input is Schedule C net profit (typical Schedule SE path).

Net business income Apply 92.35% net earnings factor before the rate Self-employment tax rate (%)

Result
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How this calculation works

What each input means

Net business income — Profit base before the optional IRS earnings factor.
Apply 92.35% factor — Optional checkbox: multiplies net income by 0.9235 before the rate (Schedule SE uses this on net earnings from self-employment).
Self-employment tax rate (%) — Default 15.3% is a common combined placeholder; you can edit it.

Formula used

Estimated SE tax ≈ (optional 92.35% ×) income × (rate ÷ 100) as one dollar output.

Still not Schedule SE—ignores Social Security wage base cap, Medicare surtax tiers, and the employer-equivalent deduction.

How this result is estimated

This self-employment tax calculator applies the formulas described on this page to the values you enter. Outputs are not financial, tax, legal, or medical advice.

Inputs are user-provided and may include rounding.
Where accuracy, eligibility, or obligations matter, rely on official disclosures and licensed professionals.

Last reviewed: 2026-04-17

Frequently asked questions

Is this calculator result exact?

It is an estimate based on your inputs and may differ from official or provider-specific calculations.

Does this site provide financial, tax, or legal advice?

No. Each tool applies explicit formulas to values you supply. Financial, tax, and legal conclusions belong with licensed professionals and official documents.

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