How this 1099 tax calculator works
Enter your net 1099 income — your freelance revenue minus business expenses. The calculator then runs the 2026 U.S. federal tax math in three layers:
1. Self-employment tax
Your net earnings are multiplied by 92.35%, then taxed at 15.3% — 12.4% for Social Security (capped at the $184,500 wage base) and 2.9% for Medicare. If you also have W-2 wages, your wages count against the Social Security cap first, exactly as the IRS does. An extra 0.9% Medicare tax applies above the high-income thresholds.
2. Deductions
Half of your self-employment tax is deducted above the line, then the 2026 standard deduction applies ($16,100 single / $32,200 married / $24,150 head of household), and a 20% QBI deduction (Section 199A) is taken on your qualified business income — capped by your taxable income.
3. Federal income tax
The remaining taxable income runs through the seven 2026 federal brackets — 10%, 12%, 22%, 24%, 32%, 35% and 37% — and the calculator shows exactly how much each bracket contributes. An optional flat state rate gives you a rough state tax estimate.
Not modeled: itemized deductions, tax credits, SSTB limitations on the QBI deduction (a warning appears when your income is in the phase-out range), and state-specific rules. Use the result for planning and budgeting — then have a tax professional review your actual return. If you owe, the quarterly estimated tax calculator will split your bill into 1040-ES payments.