Tax Details
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Uses official IRS inflation-adjusted brackets and standard deductions for the selected tax year. This is an estimate only — actual tax may differ due to credits, other income, or state taxes.
Your estimated tax will appear here
Enter income and filing status, then click Calculate Federal Tax.
Federal Income Tax Calculator – Estimate Your US Tax Liability for 2025 & 2026
The federal income tax calculator on www.usacalc.online helps you estimate how much you will owe the IRS for tax year 2025 or 2026. Using the official IRS inflation-adjusted tax brackets and standard deduction amounts, this free tool shows your federal tax liability, effective tax rate, marginal tax rate, and estimated after-tax income.
How It Works
Select tax year and filing status, enter gross income and adjustments, choose standard or itemized deduction, then calculate. The tool applies progressive brackets for the selected year.
Example – Single Filer 2026
$75,000 gross income • Standard deduction
Gross Income
$75,000
Standard Deduction
$16,100
Taxable Income
$58,900
Est. Federal Tax
~$7,670
Run your own numbers on www.usacalc.online.
Final Thoughts
Use this free federal income tax calculator for planning. For filing, use official IRS tools or a tax professional. Support: info@usacalc.online.