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

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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

  1. Maximize Business Deductions: Every legitimate expense reduces your SE tax
  2. Retirement Contributions: SEP-IRA or Solo 401(k) can significantly reduce taxable income
  3. Health Insurance: Self-employed health insurance is deductible
  4. Home Office: Claim if you use part of home regularly for business
  5. Consider S-Corp: May reduce SE tax if income is substantial (consult a tax pro)
  6. 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