The Federal Tax Estimator provides a simplified estimate of annual federal income tax from taxable income and a user-selected effective tax rate. It is useful for budgeting, comparing scenarios, or checking whether payments are broadly aligned with an expected liability.
Because federal tax is normally calculated with progressive brackets and can be affected by filing status, deductions, credits, additional taxes, and current-year law, this page intentionally uses an effective-rate model. Enter a rate that reflects your own projection or a rate derived from a more detailed tax calculation. The result is a planning estimate, not a substitute for an IRS return calculation.
1. Enter annual income
Use expected gross income before deductions.
2. Subtract adjustments
Enter eligible adjustments you expect to claim.
3. Enter deductions
Use either your expected standard or itemized deduction, not both.
4. Set an effective rate
Use a rate from your own planning assumptions.
5. Review the estimate
Compare estimated tax with withholding and payments elsewhere.
The main result is the estimated federal income tax under the effective-rate assumption you entered.
Actual federal tax generally uses progressive brackets and may differ materially.
Given: $85,000 gross income, $3,000 adjustments, $15,000 deductions, and a 14% effective rate.
Calculation: Taxable income = $85,000 − $3,000 − $15,000 = $67,000. Estimated tax = $67,000 × 0.14 = $9,380.
Result: Estimated federal tax is $9,380, leaving $75,620 before other taxes and expenses.
A single effective rate keeps the tool transparent and avoids pretending to reproduce every current-year federal rule. Use a rate based on your filing situation.
Yes. Enter the deduction amount you expect to use, but do not add itemized deductions on top of the standard deduction.
Estimated taxable income is floored at zero, so the calculator will not produce negative tax.
No. It is a planning estimate based only on the values entered. A filed return may include rules, limits, elections, phaseouts, and forms that this simplified calculator does not model.
No unless a field explicitly asks for them. These tools focus on federal planning amounts and keep state, local, Social Security, and Medicare taxes separate.