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Self Employment Tax Calculator

US Social Security + Medicare for self-employed.

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Revenue − business expenses. Before SE tax.

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Frequently asked questions

Why 92.35% of net earnings?
This simulates the employer's half of payroll tax, which self-employed pay themselves. The 7.65% "adjustment" reduces the taxable base accordingly.
When does SE tax apply?
Net SE income of $400 or more in a year triggers SE tax. Below that, no SE tax.
Is SE tax in addition to income tax?
Yes — both apply. Income tax is at regular rates; SE tax is on top, covering Social Security and Medicare contributions.
Can I reduce SE tax?
Maximize business expenses (reduces net earnings). S-corp election splits income into salary + distributions (only salary subject to FICA) — but adds complexity.