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Self-Employment Tax Calculator: Estimate Your SE Tax (Social Security & Medicare)

100% private — your data never leaves your device. All calculations run directly in your browser.

Self-Employment Tax Calculator

Estimate your general SE tax liability for Social Security and Medicare.

Your gross 1099 income minus business expenses.
Include if you have a separate employer job.
Standard Tax Breakdown
  • Social Security: 12.4% (Up to annual wage cap)
  • Medicare: 2.9% (Uncapped)
  • Combined Rate: 15.3%
Total Estimated SE Tax
$0
1040 Adjustment: $0
Social Security Portion $0
Medicare Portion $0
Total Taxable Earnings $0

Note: This is a general estimate. SE tax is typically calculated on 92.35% of your net profit. Social Security tax is only applied up to an annual wage limit, while Medicare tax is uncapped. This tool also estimates the 0.9% Additional Medicare Tax for high earners.

Calculating self-employment tax is a critical step for freelancers, independent contractors, and small business owners in managing their financial obligations. Our Self-Employment Tax Calculator is a professional-grade digital utility designed to provide a general estimate of your tax liability by applying standard federal rates. This tool calculates the 12.4% Social Security portion and the 2.9% Medicare portion, totaling the standard 15.3% self-employment tax rate. It also accounts for the 92.35% taxable multiplier and calculates the 50% “employer-equivalent” deduction used to adjust your gross income. Featuring a premium, white glassmorphic interface, the tool is optimized for high-contrast clarity and professional use. Built with a “privacy-first” architecture, all data processing occurs locally within your browser. This ensures that your sensitive business earnings and financial projections never leave your device, providing a 100% private experience. Identify your tax burden and plan your quarterly payments with confidence using this streamlined, browser-based estimation tool.