Calculators for people who sign their own paychecks.
Free calculators for freelancers, contractors and single-owner LLCs. Updated for the 2026 tax year, with the formulas shown so you can check the work.
Split your 2026 federal tax into the four IRS payments, with due dates and the safe-harbor amount.
Open calculator →See your 2026 Social Security and Medicare bill as your own boss, line by line.
Open calculator →Work backward from the take-home pay you want to the rate you need to charge.
Open calculator →Compare SE tax as an LLC with payroll tax as an S-corp, after the extra costs.
Open calculator →Uses both 2026 rates: 72.5¢ through June, 76¢ from July 1.
Open calculator →See margin and markup side by side, and the price that hits your target margin.
Open calculator →