Calculate the right federal tax withholding for your W-4 form. Avoid owing at tax time or over-withholding throughout the year.
The W-4 form controls how much federal income tax your employer withholds from each paycheck. Getting the withholding right means you neither owe a large amount at tax time nor give the government an interest-free loan all year. The redesigned W-4 (post-2020) uses a five-step system rather than allowances. Key factors: your filing status affects the standard withholding amount; Step 3 dependents credits directly reduce withholding by the credit amount; Step 4c extra withholding per paycheck covers other income or underwithholding; and itemized deductions above the standard deduction can be entered in Step 4b. The 2026 Child Tax Credit is $2,200 per qualifying child — entering this in Step 3 correctly calibrates withholding.
The 2026 W-4 form has five steps: Step 1 (required) — enter personal information and filing status. Step 2 (if applicable) — check the box if you have multiple jobs or your spouse works. Step 3 (optional) — claim dependent credits: $2,200 per qualifying child under 17, $500 per other dependent. Step 4 (optional) — enter other income not from jobs (4a), deductions if itemizing (4b), and extra withholding per paycheck (4c). Step 5 — sign and date. Only Steps 1 and 5 are required for most single-job taxpayers.
If your employer withholds too little federal income tax, you will owe the difference when you file your tax return. If you owe more than $1,000 and did not pay at least 90% of current year tax or 100% of prior year tax through withholding or estimated payments, the IRS may assess an underpayment penalty. To correct under-withholding, submit a new W-4 to your employer increasing withholding in Step 4c, or make estimated tax payments. Our W-4 calculator shows you exactly how much extra withholding per paycheck is needed.
On the 2020+ W-4, dependents are claimed in Step 3 using dollar amounts rather than allowances. For each qualifying child under 17, enter $2,200. For each other dependent (parent, older child, etc.), enter $500. Add these amounts together and enter the total in Step 3. This reduces your annual withholding by the total Step 3 amount spread across your paychecks. You must meet IRS dependency requirements for each person you claim.
The 2020+ W-4 no longer uses allowances (0 or 1 system) — that was eliminated with the redesigned form. Today you use dollar amounts in Step 3 for dependents. If you leave Step 3 blank (effectively claiming zero), more tax is withheld and you are more likely to receive a refund. If you complete Step 3 accurately, withholding is calibrated to your actual tax liability. For the most accurate withholding, use the IRS Tax Withholding Estimator or our W-4 calculator.
You can submit a new W-4 to your employer at any time — there is no limit. Major life events that warrant a W-4 update include: marriage or divorce, birth or adoption of a child, taking a second job or having your spouse start/stop working, significant income changes, purchasing a home (higher mortgage interest deduction), or receiving a large tax refund or unexpectedly owing taxes. Employers must implement new W-4 changes within their next payroll cycle after receiving the form.