What is tax withholding?

Tax withholding is the portion of your paycheck your employer sends directly to the IRS (and state, if applicable) on your behalf, as an advance payment toward your annual tax liability.

What happens if too much or too little is withheld?

If too much is withheld over the year, you'll receive a refund when you file. If too little is withheld, you'll owe additional tax — and potentially a penalty if the shortfall is large enough.

How can I change my withholding?

Submit an updated Form W-4 to your employer. You can adjust for multiple jobs, claim dependents, report other income or deductions, or request a flat extra dollar amount withheld each pay period.

Tax Withholding Calculator

Gross Pay Per Pay Period

Pay Frequency

Filing Status

Tax Year

State

Pre-Tax Deductions (401k, HSA, etc.)

Per pay period.

Form W-4 Adjustments (Optional)

Step 2: Multiple jobs or spouse also works

Step 3: Annual Dependents/Credits Amount

e.g. $2,000 per qualifying child under 17.

Step 4(a): Other Annual Income (not from jobs)

Step 4(c): Extra Withholding Per Pay Period

Estimated Net Pay After Withholding

$3,283.58

Paycheck Breakdown

Gross Pay	$4,200.00
Federal Income Tax Withholding	−$595.12
Social Security Tax (6.2%)	−$260.40
Medicare Tax (1.45%)	−$60.90
Net (Take-Home) Pay	$3,283.58

Annualized: gross pay of $109,200, net pay of approximately $85,373 per year (26 pay periods).

Tax withholding is your employer's best guess — based on your Form W-4 — at how much federal (and state) tax you'll owe for the year, collected gradually from each paycheck. This tax withholding calculator estimates that amount and lets you see how W-4 adjustments change it.

How Withholding Is Estimated

The calculator annualizes your per-period taxable wages, applies your filing status's standard deduction, runs the result through the federal tax brackets, and then divides the annual figure back down to a per-paycheck withholding amount. This mirrors the "Percentage Method" approach described in IRS Publication 15-T.

Form W-4 Steps 2 Through 4

The optional W-4 section lets you model the main adjustments from the current Form W-4: Step 2 (a checkbox for when you or your spouse have more than one job, which affects the withholding table used for married filers), Step 3 (an annual dollar credit for dependents — commonly $2,000 per qualifying child under 17), Step 4(a) (additional income not from jobs, like interest or dividends, which increases withholding), and Step 4(c) (a flat extra amount withheld each pay period).

Why Withholding and Tax Liability Can Differ

Withholding is an estimate spread evenly across the year — your actual tax liability depends on your total annual income, deductions, and any credits you claim when filing. If your situation changes mid-year (a raise, a second job, a new dependent), updating your W-4 keeps withholding closer to your real liability and helps you avoid a large refund or balance due.

Related Tools

For a withholding estimate built specifically around the Form W-4 worksheet structure, see our W-4 calculator. To see your total annual tax liability (not just withholding), use the income tax calculator.