Why Use This Self-Employment Tax Calculator
Running your own business means managing your own taxes. This self-employed tax calculator helps you:
- 💰 Calculate Your Total Tax — see income tax + self-employment tax.
- 📊 Understand Your Deductions — see the breakdown of all taxes.
- 🌍 Works for Any Country — enter your own rates and caps.
- 📈 Visualize Your Tax — see breakdown charts.
- 📜 Track Your History — save, review, and export past calculations.
- 🔒 100% Private — all calculations run locally.
How Self-Employment Tax Is Calculated
Net Income After Expenses = Net Profit − Business Expenses
Social Security Tax = (Net Income After Expenses capped at Social Security Cap) × Social Security Rate
Medicare Tax = Net Income After Expenses × Medicare Rate
Pension Contribution = Net Income After Expenses × Pension Rate
Income Tax = Net Income After Expenses × Income Tax Rate
Total Tax = Income Tax + Social Security Tax + Medicare Tax + Pension Contribution
Net Earnings = Net Income After Expenses − Total Tax
How to Use This Self-Employment Tax Calculator
- Select your account currency from the picker in the site header.
- Enter your net profit from self-employment.
- Select your pay frequency.
- Enter your income tax rate.
- Enter your social security rate.
- Enter your social security cap (if applicable).
- Enter your medicare rate.
- Enter your pension contribution rate (optional).
- Enter any business expense deductions.
- Enter any other deductions.
- View your results instantly — see your total tax, net earnings, and breakdown.
Frequently Asked Questions
What is self-employment tax?
Self-employment tax is the tax that self-employed individuals pay to fund social security, Medicare, and other state programs. It typically includes both the employee and employer portions of these contributions.
How is self-employment tax calculated?
Self-employment tax is calculated on your net profit from self-employment. In many countries, it includes social security and Medicare contributions at rates that may be higher than employee rates because you pay both shares.
Can I deduct business expenses?
Yes — you can enter deductible business expenses, which reduce your net income subject to tax.
Does this calculator work for any country?
Yes — you enter your own tax rates, social security rates, and caps. The tool works for any country’s self-employment tax system.
Is my data stored anywhere?
No. All calculations run locally in your browser. History and presets are saved in your browser’s localStorage — nothing is sent to a server.