Calculate self-employment tax, federal income tax, business deductions, and quarterly estimated payments — instantly and free.
Enter income & expenses for an instant result
All self-employment & W-2 income
Reduce net SE income & taxable income
IRS 2025 estimated tax due dates
Use Quick Estimate or Detailed to calculate your total tax first. Your quarterly payments update automatically in the results panel.
Safe Harbor Rule: Pay at least 100% of last year's tax (or 110% if prior-year AGI > $150,000) to avoid underpayment penalties.
Pay via IRS Direct Pay at irs.gov or mail Form 1040-ES. Each quarterly payment covers both SE tax and income tax.
Your tax estimate appears here as you type
Calculates self-employment tax at 15.3% on 92.35% of net income — Social Security and Medicare combined in one step.
Enter software, equipment, home office, health insurance, and retirement contributions to reduce your taxable income.
Uses current federal income tax brackets for single, married, and head-of-household filers — updated for 2025.
Splits your annual tax into four quarterly estimated payments with exact IRS due dates for 2025.
Self-employment tax, federal income tax, and quarterly payments — all calculated from your real numbers.
Add your total annual freelance or 1099 income. Select your filing status and include any additional W-2 or rental income so the calculator sees your full tax picture.
Enter your business deductions — software, home office, equipment, health insurance premiums, and retirement contributions. Each dollar reduces both your SE tax and your income tax.
See your self-employment tax, federal income tax, combined total, effective rate, and quarterly payment amount — use that figure to set aside the right amount before each IRS deadline.
Everything you need to understand self-employment tax, maximize deductions, and stay on top of quarterly payments.
The short answer: because flying blind on taxes is the most expensive mistake a freelancer can make.
No account, no trial, no credit card. Every calculation, completely free.
Self-employment tax, federal brackets, and deductions all calculated together — not separately across three different tools.
The calculator outputs exactly what to set aside each quarter before the IRS deadline — no guessing, no surprises in April.
Common questions about self-employment tax and freelance deductions