Self-Employment Tax Calculator
Estimate self-employment tax and income tax on your business profit. Revenue minus deductible expenses gives profit; the calculator separates social-security/Medicare contributions from income tax and deducts half the SE tax.
Written and reviewed by the CalcBundle editorial team. Transparent formulas · results are estimates, not advice.
Total estimated tax
$0
Self-employment taxest
$0
Income taxest
$0
Total tax
$0
After-tax income
$0
| Business profit | $0 |
|---|---|
| SE Social Security | $0 |
| SE Medicare | $0 |
| Taxable income | $0 |
| Income tax | $0 |
| Total estimated tax | $0 |
Effective tax rate on total income: 0.0%. Only your business profit (revenue − expenses) is taxed, not gross revenue.
Based on United States (Federal) rules for tax year 2025.
Self-employment income and business expenses
Your taxable business profit is revenue − deductible business expenses. Only that profit is subject to self-employment tax and income tax — not your gross receipts.
Self-employment (social) contributions
In the US, self-employment tax is the combined Social Security (up to the annual wage base) and Medicare rate on 92.35% of your net profit. Because you are both employer and employee, you pay both halves — but half is deductible against income tax.
Income tax on top
After the deductible half of SE tax and your standard deduction, the remaining income is taxed through the ordinary income tax brackets. If you receive a 1099, the 1099 tax calculator and quarterly tax calculator help you plan payments.
Frequently asked questions
What is self-employment tax?
In the US it is the Social Security and Medicare tax that self-employed people pay on their net business profit — covering both the employee and employer halves. It is separate from federal income tax.
Is my whole revenue taxed?
No. Only your net profit is taxed — revenue minus deductible business expenses. This calculator computes profit first, then the taxes on it.
Can I deduct part of the self-employment tax?
Yes. Half of the self-employment tax is deductible against your income tax, which this calculator applies automatically for supported years.
Related calculators
1099 Tax
Estimate self-employment and income tax on 1099 income, plus a set-aside.
Quarterly Tax
Estimate annual tax and a suggested quarterly estimated payment.
Income Tax
Estimate income tax with a progressive bracket breakdown, marginal and effective rates.
Take-Home Pay
Estimate net pay after income tax, payroll taxes and deductions.
Disclaimer. This calculator provides estimates for informational purposes only. Results are based on the information you enter and the assumptions used by the calculator. Actual financial, tax, business valuation, lending, marketplace or investment outcomes may differ. Consider consulting a qualified professional for decisions involving significant amounts of money. Estimates based on the selected tax year and information entered. Not tax advice; state taxes are not included.