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Self-Employment Tax Calculator 2026
Estimate self-employment Social Security and Medicare from net business profit, allowing for W-2 wages.
- SE tax plus additional Medicare, $
- 8,477.73
- Deductible half of SE tax, $
- 4,238.87
- Additional Medicare on SE earnings, $
- 0
How the calculation works
SE earnings = profit × 92.35%. Social Security = 12.4% up to the remaining $184,500 wage base; Medicare = 2.9% plus 0.9% above the additional-tax threshold.
Inputs
- Net self-employment profit, $
- W-2 Social Security wages, $
- W-2 Medicare wages, $
- Filing status
Calculation details
US, 2026. Ordinary SE tax does not apply when SE earnings are below $400. Enter Social Security wages and Medicare wages separately.
Excludes federal income tax, state taxes, special farm or church-worker methods, and international agreements. Additional Medicare is excluded from the half-SE-tax deduction.
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Updated: 2026-10-02