Federal Tax Calculator 2025
Calculate your federal income tax with our free federal tax calculator. Get accurate estimates using 2025 IRS tax brackets, standard deductions, and federal tax rates. Our federal tax calculator helps you understand your federal tax liability instantly.
Use Our Free Federal Tax Calculator
Our federal income tax calculator uses official 2025 IRS federal tax brackets to calculate your federal tax liability. This federal tax calculator is 100% free and provides instant federal tax estimates.
Federal Tax Calculator
Enter your information to calculate federal income tax using our free federal tax calculator
Federal Tax Calculator Ready
Enter your income in the federal tax calculator to see your federal income tax estimate
2025 Federal Income Tax Brackets
Our federal tax calculator uses these official 2025 IRS federal tax brackets. The federal income tax system is progressive, meaning federal tax rates increase as your taxable income rises.
2025 Federal Income Tax Brackets
Single - Use Federal Tax Calculator Above
| Federal Tax Rate | Taxable Income Range | Federal Tax Owed |
|---|---|---|
| 10% | $0 - $11,925 | $0 + 10% of excess |
| 12% | $11,925 - $48,475 | $1,192.5 + 12% of excess |
| 22% | $48,475 - $103,350 | $5,578 + 22% of excess |
| 24% | $103,350 - $197,300 | $17,651 + 24% of excess |
| 32% | $197,300 - $250,525 | $40,199 + 32% of excess |
| 35% | $250,525 - $626,350 | $57,231 + 35% of excess |
| 37% | $626,350 - and above | $188,769.75 + 37% of excess |
Federal Tax Calculator Note: These are marginal federal income tax rates. You pay each federal tax rate only on the portion of income within that bracket. Our federal tax calculator applies these 2025 IRS federal tax brackets automatically.
2025 Standard Deductions
- Single$15,750
- Married Filing Jointly$31,500
- Married Filing Separately$15,750
- Head of Household$23,635
The federal tax calculator subtracts these amounts before calculating federal income tax
How Federal Tax Works
- Progressive system: Federal tax rates increase with income
- Marginal rates: Different federal tax rates apply to different income portions
- Deductions reduce: Your taxable income before federal tax is calculated
- Federal tax calculator: Shows exactly how much you owe at each rate
Federal Tax Calculator Example
Use our federal tax calculator above to calculate your exact federal income tax
How Does Our Federal Tax Calculator Work?
Our federal tax calculator uses the official 2025 IRS federal income tax brackets to calculate your federal tax liability accurately. This federal income tax calculator takes your gross income, applies the appropriate standard deduction based on your filing status, and calculates your taxable income. The federal tax calculator then applies the progressive federal tax rates (10%, 12%, 22%, 24%, 32%, 35%, and 37%) to determine your total federal income tax.
Our federal tax calculator accounts for all filing statuses: Single, Married Filing Jointly, Married Filing Separately, and Head of Household. Each filing status has different federal tax brackets and standard deductions. The federal income tax calculator uses these differences to provide accurate federal tax estimates specific to your situation.
The federal tax calculator also factors in pre-tax deductions like 401(k) contributions, HSA contributions, and health insurance premiums, which reduce your taxable income before federal income tax is calculated. This makes our federal tax calculator one of the most comprehensive free federal tax estimators available.
What's Included in Federal Tax Calculations?
- Federal income tax based on 2025 IRS tax brackets (10%-37%)
- Standard deductions for 2025 ($15,750 single, $31,500 married, $23,635 head of household)
- W-4 allowances and additional withholding options
- Pre-tax deductions (401k, HSA, health insurance)
- Federal tax withholding per paycheck, monthly, and annually
- Effective federal tax rate calculation
Understanding Federal Income Tax
Federal income tax is collected by the Internal Revenue Service (IRS) and is the largest source of revenue for the U.S. federal government. The federal tax calculator helps you understand how much federal income tax you'll owe based on the progressive federal tax system.
The federal tax system uses marginal tax brackets, meaning you don't pay the same federal tax rate on all your income. Our federal tax calculator shows you exactly how much federal income tax you pay in each bracket. For example, if you're single earning $60,000, you pay 10% federal tax on the first $11,925, 12% on income from $11,925 to $48,475, and 22% on the remaining amount.
The federal income tax calculator also accounts for the 2025 standard deduction, which reduces your taxable income before federal tax is applied. This means you don't pay federal income tax on the first $15,750 (single) or $31,500 (married filing jointly) or $23,635 (head of household) of your income.
Federal Tax vs State Tax
This federal tax calculator calculates only federal income tax. Most Americans also pay state income tax (except in states like Texas, Florida, and Nevada). To calculate your total tax burden, use our state-specific calculators in addition to this federal income tax calculator.
The federal tax calculator is separate from FICA taxes (Social Security and Medicare). Our complete paycheck calculators include federal income tax, FICA taxes, and state taxes for a comprehensive view.
How to Calculate Federal Income Tax
Calculate Gross Income
Start with your total annual income from all sources (wages, salary, tips, bonuses). Our federal tax calculator uses this as the starting point for federal income tax calculations.
Subtract Pre-Tax Deductions
Reduce your income by pre-tax deductions (401k, HSA, health insurance) to get your adjusted gross income (AGI). The federal income tax calculator handles these deductions automatically.
Apply Standard Deduction
Subtract the 2025 standard deduction ($15,750 single, $31,500 married filing jointly) to calculate your taxable income. Our federal tax calculator uses the correct deduction for your filing status.
Apply Federal Tax Brackets
Calculate federal income tax using the progressive 2025 federal tax brackets (10%, 12%, 22%, 24%, 32%, 35%, 37%). The federal tax calculator applies these rates to different portions of your income.
Calculate Total Federal Tax
Add up federal income tax from all brackets to get your total federal tax liability. Our federal income tax calculator shows your effective federal tax rate and tax owed per paycheck.
Federal Tax Calculator FAQs
State Tax Calculators
Use our federal tax calculator with state-specific calculators for complete tax estimates