Federal Tax Withholding Calculator
Estimate your federal income tax, Social Security, and Medicare withholdings. Based on 2025 tax brackets and the standard deduction.
Gross pay before any deductions for one pay period
Enter your gross pay to see estimated withholdings
How Does Federal Tax Withholding Work?
What is federal income tax withholding?
Federal income tax withholding is the amount your employer deducts from each paycheck and sends to the IRS on your behalf. The amount withheld depends on your filing status, pay frequency, and the information you provide on Form W-4. The goal is for your total withholdings during the year to approximate your actual tax liability, so you neither owe a large amount nor receive a large refund at tax time. Employers use IRS Publication 15-T (Federal Income Tax Withholding Methods) to determine the correct withholding amount for each pay period.
How do the 2025 federal tax brackets work?
The United States uses a progressive tax system with seven marginal tax brackets: 10%, 12%, 22%, 24%, 32%, 35%, and 37%. Marginal means you only pay the higher rate on income within each bracket, not on all your income. For example, a single filer earning $60,000 in 2025 pays 10% on the first $11,925, 12% on income from $11,925 to $48,475, and 22% on income from $48,475 to $60,000 (after the standard deduction). The bracket thresholds are adjusted annually for inflation. Your effective tax rate -- the percentage of total income paid in federal tax -- is always lower than your marginal bracket because of this progressive structure.
What is FICA and how is it calculated?
FICA stands for the Federal Insurance Contributions Act and consists of two taxes: Social Security and Medicare. In 2025, employees pay 6.2% for Social Security on earnings up to $168,600 (the wage base limit) and 1.45% for Medicare on all earnings with no cap. High earners pay an additional 0.9% Medicare tax on wages above $200,000 ($250,000 for married filing jointly). Your employer matches the 6.2% Social Security and 1.45% Medicare portions, meaning the combined FICA rate is 15.3% of wages. Self-employed individuals pay both halves (the "self-employment tax") but can deduct the employer-equivalent portion.
What is Form W-4 and why does it matter?
Form W-4 (Employee's Withholding Certificate) tells your employer how much federal income tax to withhold from your paycheck. The current version (redesigned in 2020) asks for your filing status, information about multiple jobs or a working spouse, dependents, and any additional withholding or deductions. Claiming more dependents or additional deductions reduces your withholding, while adding extra withholding increases it. You should submit a new W-4 when you experience major life changes such as marriage, divorce, having a child, or starting a second job. The IRS provides an online Tax Withholding Estimator to help you fill out Form W-4 correctly.
Standard deduction vs. itemized deductions
The standard deduction for 2025 is $15,000 for single filers and married filing separately, $30,000 for married filing jointly, and $22,500 for head of household. This calculator uses the standard deduction, which approximately 90% of taxpayers claim since the Tax Cuts and Jobs Act of 2017 nearly doubled it. Itemized deductions (mortgage interest, state and local taxes up to $10,000, charitable contributions, and medical expenses above 7.5% of AGI) only benefit you if they exceed the standard deduction. Additional standard deductions are available for taxpayers who are 65 or older or blind.
What taxes does this calculator not include?
This calculator estimates federal income tax, Social Security, and Medicare withholdings only. It does not include state income tax (which varies from 0% in states like Texas and Florida to over 13% in California), local income taxes (e.g., New York City, many Ohio cities), pre-tax deductions such as 401(k) contributions, health insurance premiums, HSA/FSA contributions, or tax credits like the Earned Income Tax Credit (EITC) or Child Tax Credit. For a complete picture of your take-home pay, you should account for all applicable deductions and credits.
Federal Tax FAQ
Explore Related Resources
Blog Posts
Automate Payroll Tax Calculations
Grove helps you manage payroll, track employee costs, and stay compliant with federal and state tax requirements -- all in one platform.
30-day money-back guarantee. Cancel anytime.