Self-Employment Tax Calculator 2025
Calculate your self-employment tax for 2025 including Social Security and Medicare. The Social Security wage base for 2025 is $176,100, up from $168,600 in 2024.
Income Information
Payment Options
Tax Calculation Results
Understanding Self-Employment Tax
Self-employment tax is how self-employed individuals pay into Social Security and Medicare. As a self-employed person, you pay both the employee and employer portions, totaling 15.3% of your net earnings.
2025 Tax Rates & Limits
Social Security (12.4%)
- 2025 wage base: $176,100
- 2024 wage base: $168,600
- Only earnings up to wage base are taxed
- Funds retirement and disability benefits
Medicare (2.9%)
- No income limit
- All net earnings are taxed
- Additional 0.9% for high earners
- Funds Medicare health insurance
Additional Medicare Tax Thresholds
- Single: $200,000
- Married Filing Jointly: $250,000
- Married Filing Separately: $125,000
Important Rules
- You must pay SE tax if net earnings are $400 or more
- Only 92.35% of net earnings are subject to SE tax
- You can deduct 50% of SE tax as an above-the-line deduction
- SE tax is in addition to regular income tax
- Quarterly estimated payments are usually required
Who Pays Self-Employment Tax?
- Independent contractors and freelancers
- Sole proprietors
- Partners in partnerships
- LLC members (in most cases)
- Anyone with 1099-NEC or 1099-K income
Tax Planning Strategies
- Maximize Business Deductions: Every legitimate expense reduces your SE tax
- Retirement Contributions: SEP-IRA or Solo 401(k) can significantly reduce taxable income
- Health Insurance: Self-employed health insurance is deductible
- Home Office: Claim if you use part of home regularly for business
- Consider S-Corp: May reduce SE tax if income is substantial (consult a tax pro)
- Track Everything: Good records ensure you don't miss deductions
Common Mistakes to Avoid
- Forgetting to make quarterly estimated payments
- Not setting aside enough for taxes (aim for 25-30%)
- Missing the employer-equivalent deduction
- Incorrectly calculating the 92.35% of net earnings
- Not tracking all business expenses
- Mixing personal and business expenses