| Your Information | |
| Filing Status | |
| Gross Annual Income ($) | |
| Pre-Tax Deductions (Optional) | |
| 401(k) / IRA Contributions ($) | |
| Other Pre-Tax Deductions ($) | |
| Results | |
| Standard Deduction | -- |
| Taxable Income | -- |
| Federal Income Tax | -- |
| Effective Tax Rate | -- |
| Marginal Tax Rate | -- |
| Take-Home Pay (After Federal Tax) | -- |
An income tax calculator is a financial tool that estimates your US federal income tax liability based on your income, filing status, and deductions. It uses the current progressive tax bracket system to compute your total tax, effective tax rate, and marginal tax rate. This income tax calculator helps you understand how much of your income goes to federal taxes and plan your finances accordingly.
US federal income tax uses a progressive tax system with multiple brackets. Your taxable income is divided into portions, and each portion is taxed at the corresponding rate. The income tax calculator applies the standard deduction and pre-tax deductions before computing tax.
The income tax calculator first determines the standard deduction based on your filing status, then subtracts pre-tax deductions such as 401(k) contributions to arrive at your taxable income. It then applies the progressive tax brackets to compute your total federal income tax.
Your filing status determines your standard deduction and tax bracket thresholds. The income tax calculator supports three common statuses: Single, Married Filing Jointly, and Head of Household. Married couples filing jointly benefit from a larger standard deduction and wider tax brackets.
Taxable income is the amount subject to federal income tax after subtracting the standard deduction and pre-tax deductions. The income tax calculator shows how reducing your taxable income through 401(k) contributions, IRA contributions, and other pre-tax deductions directly lowers your tax bill.
Your marginal tax rate is the rate applied to your last dollar of income. Your effective tax rate is the average rate you pay on all income. The income tax calculator displays both. For example, a single filer earning $85,000 may have a 22% marginal rate but only a 12% effective rate due to the progressive bracket system.
Pre-tax deductions such as 401(k) contributions, traditional IRA contributions, and health savings account contributions reduce your taxable income. The income tax calculator includes these deductions so you can see how they lower your tax liability and increase your take-home pay.
US federal income tax uses a progressive tax bracket system. Your income is divided into portions, each taxed at a different rate ranging from 10% to 37%. Only the portion of income in each bracket is taxed at that bracket's rate. The income tax calculator applies the standard deduction and pre-tax deductions before computing your tax.
Your marginal tax rate is the rate applied to the highest bracket you fall into. Your effective tax rate is the average rate you pay on all your taxable income. The effective rate is always lower than the marginal rate. The income tax calculator shows both so you can understand your true tax burden.
The standard deduction is a flat amount that reduces your taxable income without needing to itemize. For tax year 2025, the standard deduction is $15,000 for single filers, $30,000 for married filing jointly, and $22,500 for head of household. The income tax calculator applies the correct standard deduction automatically.
This income tax calculator estimates federal income tax only. State income tax rates vary widely, with some states such as Texas, Florida, and Nevada having no state income tax. For a complete picture of your tax liability, you should also consider your state's tax rates separately.