Decision tool
Self-Employment Tax Calculator
Estimate Social Security and Medicare self-employment tax on net earnings.
Your inputs
Adjust the fields and review the result in this workbench.
Cite this calculator
Uses IRS-style 92.35% taxable base and 2025 wage base default. Not a full return estimate.
Last reviewed: August 2026
Self-Employment Tax Calculator. (August 2026). Useful Tools Online. https://usefultoolsonline.com/self-employment-tax-calculator/
Interpretation
SE tax basics
Self-employed individuals pay both employer and employee portions via SE tax. Half is generally deductible above the line.
Avoid mistakes
Common mistakes
A few things that can lead to misleading results or poor decisions.
Using gross revenue instead of net earnings.
Ignoring W-2 wages that reduce the SS cap room.
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