Calculate Your Self-Employment Tax
If you're a freelancer, contractor, or small business owner, you're responsible for paying self-employment tax in addition to income tax. This calculator helps you understand your SE tax obligation.
- 15.3% SE tax rate (Social Security + Medicare)
- Deduct half of SE tax from income
- Calculate quarterly payment amounts
- 2025 Social Security wage base: $168,600
Frequently Asked Questions
What is self-employment tax?+
Self-employment tax is the Social Security and Medicare tax for self-employed individuals. Unlike employees who split these taxes with their employer, self-employed people pay both portions (15.3% total).
How is SE tax calculated?+
SE tax is calculated on 92.35% of your net self-employment income. The rate is 15.3%: 12.4% for Social Security (up to $168,600 in 2025) and 2.9% for Medicare (no cap).
Can I deduct self-employment tax?+
Yes! You can deduct half of your SE tax as an above-the-line deduction. This represents the "employer" portion and reduces your adjusted gross income.
Do I need to pay quarterly?+
If you expect to owe $1,000 or more in taxes, you should make quarterly estimated payments. Due dates: April 15, June 15, September 15, January 15.
What forms do I need?+
You'll need Schedule C (business income), Schedule SE (self-employment tax), and Form 1040-ES for quarterly payments.