Fill Out IRS Form W-4 Online
Employee's Withholding Certificate
Internal Revenue Service
Tells an employer how much federal income tax to withhold from an employee's paycheck.
Reviewed July 2026
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IRS Form W-4, Employee's Withholding Certificate, is the form employees give their employer so the right amount of federal income tax is withheld from each paycheck. Set it too low and you can owe a balance plus possible penalties at filing time; set it too high and you overpay all year, then wait for a refund to get your money back.
You can complete Form W-4 in the Universal PDF editor, check the boxes and fill in the fields on screen, sign it, and download the finished PDF for your employer or HR portal. The current revision is laid out in five steps, and only two of them are mandatory for everyone.
What is Form W-4 used for
Your employer uses the W-4, together with IRS withholding tables, to calculate how much federal income tax to take out of your wages. The form was redesigned in 2020 to remove withholding allowances. Instead of claiming a number of allowances, you now report filing status, multiple-job adjustments, dependents, other income, and deductions directly.
The IRS recommends reviewing your withholding every year and whenever your personal or financial situation changes, such as marriage, divorce, a new child, or a second job. The IRS Tax Withholding Estimator on irs.gov can help you decide what to enter.
Who needs to file Form W-4
Every new employee completes a W-4 when starting a job. Existing employees submit a new one whenever they want to change their withholding. If you never submit a W-4, your employer must withhold as if you were single with no other adjustments, which is often more than necessary.
The form goes to your employer only. It is not filed with the IRS, although employers must keep it on file and the IRS can request it.
How to fill out Form W-4
The form has five steps. Steps 1 and 5 are required; steps 2 through 4 apply only if they fit your situation.
- Step 1: enter your name, address, Social Security number, and filing status (single or married filing separately, married filing jointly or qualifying surviving spouse, or head of household).
- Step 2: complete this if you hold more than one job at a time or you are married filing jointly and your spouse also works. You can use the online estimator, the worksheet in the instructions, or simply check the box in 2(c) if there are only two similar-paying jobs.
- Step 3: claim dependents by multiplying the number of qualifying children and other dependents by the credit amounts printed on the form, then entering the total.
- Step 4: optional adjustments, including 4(a) other income not from jobs such as interest or dividends, 4(b) deductions beyond the standard deduction, and 4(c) any extra tax you want withheld from each paycheck.
- Step 5: sign and date. An unsigned W-4 is not valid.
Where to send it and deadlines
Give the completed form to your employer's payroll or HR department. There is no annual deadline, but changes generally take effect within one to two payroll cycles after your employer receives the form. If you claimed exemption from withholding, that claim must be renewed each year on the schedule stated in the form instructions.
Frequently asked questions
Submit a new W-4 that reflects credits and deductions you expect, such as dependents in step 3 or additional deductions in step 4(b). Use the IRS Tax Withholding Estimator first so you do not underwithhold.
The W-4 is your instruction to your employer about withholding, filled out by you. The W-2 is the year-end statement your employer produces showing what you were actually paid and what was withheld.
Only if you had no federal income tax liability last year and expect none this year. You claim it by writing the word the instructions specify below step 4(c), and the exemption must be renewed annually.
No. Your most recent W-4 stays in effect until you replace it. The IRS suggests an annual checkup, and a new form is smart after major life or income changes.
The 2020 redesign replaced allowances with direct entries for dependents, other income, and deductions to make withholding more accurate under current tax law.
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