Federal income tax calculator
Federal Tax Calculator
Estimate US federal income tax based on annual income, filing status and simplified standard deduction assumptions.
How this federal tax calculator works
This calculator estimates federal income tax by subtracting a simplified standard deduction from income and applying progressive federal tax brackets.
What is taxable income?
Taxable income is the amount of income used to calculate income tax after deductions. This calculator uses a simplified standard deduction assumption.
What is an effective tax rate?
Effective tax rate compares estimated tax with total income. It is different from the highest marginal tax bracket because not all income is taxed at the same rate.
Federal tax vs paycheck withholding
Federal tax estimates are not the same as exact paycheck withholding. Actual payroll withholding can depend on W-4 settings, deductions, credits, benefits and employer payroll configuration.
Important note
This calculator provides simplified educational estimates only. It is not tax, legal, payroll or financial advice. Tax rules can change and actual results may vary.