W-4 Withholding Calculator United States

What the W-4 withholding calculator does

The calculator estimates how much federal income tax is withheld from each paycheck, based on your annual salary, the filing status you claim on Form W-4, how often you are paid, and any extra amount you ask your employer to withhold. It shows the per-paycheck figure and the estimated annual federal tax behind it.

Withholding is a prepayment of the income tax you owe when you file. If too little is withheld you may face a bill and possibly a penalty; if too much is withheld you lend the government money interest-free until your refund arrives. Checking your current settings lets you adjust your W-4 before the gap grows.

How the calculation works

• It subtracts the standard deduction for your filing status from your salary to find taxable income.
• It applies the progressive federal brackets for that status to the taxable amount.
• It divides the resulting annual tax by the number of pay periods in your schedule.
• It adds any extra per-paycheck withholding you entered from your W-4.

Federal tax is marginal, so only the income inside each bracket is taxed at that bracket's rate. For a single filer the standard deduction is $16,100, removed before any bracket applies.

Filing status and pay frequency

Filing status has the largest effect on the estimate. Single, married filing jointly, married filing separately and head of household each have their own standard deduction and bracket thresholds; a married couple filing jointly has a larger deduction and wider brackets than a single filer, so the same salary is withheld at a lower rate. Choose the status you will actually file under.

Pay frequency changes only how the annual tax is divided: across 52 checks for weekly pay or 12 for monthly pay. The per-check amounts look very different while the yearly total is the same, so compare withholding with someone else only when both status and pay schedule match.

A worked example

Take a single filer, whose standard deduction is $16,100, with a $60,000 salary paid every two weeks and no extra withholding.

• Taxable income is $60,000 minus the $16,100 standard deduction, or $43,900.
• The first bracket taxes the income up to $12,400 at 10 percent, which is $1,240.
• The remaining $31,500 sits in the 12 percent bracket, which is $3,780.
• Annual federal tax is $1,240 plus $3,780, or $5,020.
• Spread across 26 biweekly paychecks, that is about $193 withheld per check.

With an extra $50 per paycheck on the W-4, each check would show roughly $243 in federal withholding, and the annual prepayment would rise by $1,300.

Extra withholding

The extra withholding line on Form W-4 covers income that has no withholding of its own, such as freelance earnings, investment income, or a spouse's income that pushes the household into a higher bracket. The calculator adds the amount to every paycheck, so you can test different figures before giving your employer a revised W-4. If you usually owe money in April, a modest extra amount can even that out; if you usually get a large refund, reducing it puts more in each paycheck.

Assumptions and limitations

This is a planning estimate, not a payroll system. It assumes the standard deduction and that your salary is your only income with withholding. It does not model itemized deductions, credits such as the child tax credit, other jobs, dependents entered on the W-4, pre-tax benefits like 401(k) or HSA contributions, or the IRS percentage-method tables employers use for each pay period. It excludes Social Security, Medicare and state and local taxes. Your employer's actual withholding may differ, so check anything important with the IRS Tax Withholding Estimator or a tax professional.

This is general information only and not financial advice.

About This W4 Withholding Calculator

Use this w4 withholding calculator to get an instant, accurate estimate. The figures follow official IRS guidance and every rate and threshold is kept up to date for 2026. Adjust the inputs above to match your situation, or browse all our calculators to plan your next step.