This Self‑Employment Tax Calculator helps freelancers, gig workers, contractors, and small business owners estimate how much they owe in self‑employment tax. Unlike traditional employees, self‑employed individuals must pay both the employer and employee portions of Social Security and Medicare taxes, totaling 15.3%. This tool simplifies the process by allowing you to enter your net self‑employment income after business expenses. It then calculates your Social Security tax (12.4%), Medicare tax (2.9%), and total self‑employment tax owed. The calculator also shows your adjusted taxable income after deducting half of your self‑employment tax—an IRS‑approved deduction that reduces your overall tax burden. This makes the tool ideal for budgeting, quarterly tax planning, and understanding how freelance income affects your financial obligations. All calculations run directly in your browser, ensuring complete privacy with no data stored or shared. With a clean, modern interface and instant results, this Self‑Employment Tax Calculator provides a fast and reliable way to estimate your tax responsibilities and plan ahead with confidence.