Self-Employment Tax Calculator
See exactly what you owe in SE tax on freelance, contractor, or side-business income — including the deductible half.
These are estimates. Want real numbers from a real CPA?
Real fee benchmarks for tax prep, bookkeeping, payroll, and advisory — by service and business type.
How it works
- Multiply net earnings by 92.35% to get the SE tax base.
- Apply Social Security 12.4% up to the 2025 wage base ($176,100).
- Apply Medicare 2.9% on all earnings; add 0.9% additional Medicare above $200k single / $250k MFJ.
Assumptions
- Net SE earnings are after business expenses on Schedule C.
- W-2 wages are not netted against the SS wage base here.
- Half of SE tax is deductible above the line on Form 1040.
Frequently asked questions
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These calculators provide estimates for general planning only and are not tax, legal, or financial advice. Always verify with a licensed CPA for your specific situation.
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