Income Tax Calculator 2026 (US Federal)
Estimate 2026 federal income tax using IRS ordinary-income brackets and standard deductions. No login and no calculator-input storage.
Enter zero or a positive amount for income, deductions, and credits. Results are unavailable until the inputs are valid.
Calculator results
2026 Standard Deductions
Federal Income Tax
$0
Effective Rate
0%
Marginal Rate
0%
Income After Modeled Federal Tax
$0
Monthly Tax
$0
Tax Calculation Breakdown
Tax Bracket Breakdown
| Bracket | Income | Tax |
|---|
How this US income tax calculator works
This calculator models tax year 2026 US federal ordinary income tax for single, married-filing-jointly, and head-of-household statuses. Bracket thresholds and standard deductions come from IRS Revenue Procedure 2025-32, sections 4.01 and 4.14.
Start with your expected gross income and choose standard or itemized deductions based on your situation. Then add credits to see how your final liability changes. Because federal tax is progressive, the calculator distinguishes between marginal and effective rates so you can understand why a raise does not tax all income at the same top rate.
Important exclusions: the result does not include Social Security or Medicare taxes, state or local taxes, self-employment tax, alternative minimum tax, net investment income tax, capital-gains schedules, qualified-business-income deductions, dependent rules, phaseouts, or withholding. “Income after modeled federal tax” is not take-home pay.
Use this estimate for a first-pass scenario, not filing. Verify withholding with the IRS Tax Withholding Estimator or consult a qualified tax professional. Pair gross-income scenarios with the Salary Calculator and Budget Planner, but do not treat this simplified output as a paycheck forecast.
Frequently Asked Questions
It estimates tax year 2026 ordinary US federal income tax under a simplified model. It helps compare gross-income, deduction, and credit scenarios, but it is not a filing or paycheck calculator.
Yes. This page focuses on US federal tax estimates and does not include state or local taxes by default. If you live in a state with income tax, add that separately for a fuller picture.
It models tax year 2026 ordinary federal income-tax brackets and standard deductions from IRS Revenue Procedure 2025-32. It does not calculate 2025 tax.
Marginal rate applies to your last dollar of taxable income, while effective rate is total tax divided by total income. Knowing both helps you see why a higher bracket does not tax all income at the same rate.
No. Deductions reduce taxable income, while credits reduce your tax bill directly dollar-for-dollar. In practice, credits usually have the bigger immediate impact on what you owe.
Yes. It is free to use, private, and requires no account creation. You can run multiple scenarios without saving personal tax data on our side.