Do I need to fill out a new W-4 every year?

No. The form stays in effect until you change it. The exception is an exempt claim, which must be renewed by 16 February each year (16 February 2027 for 2026).

What happens if I don't fill out a W-4?

Your employer withholds as if you were single with no other entries on the form. If you are married or have children, that usually means more tax is withheld than you need.

Should I check the box in Step 2(c)?

Tick it when you have exactly two jobs in total, or you and your spouse each have one, and the pay is similar. Tick it on both forms. If one job pays much more than the other, the Multiple Jobs Worksheet or the IRS estimator is more accurate.

How much is the child amount on the 2026 W-4?

$2,200 for each qualifying child under 17 and $500 for each other dependent, for total income up to $200,000 ($400,000 joint).

Can I claim the overtime deduction on my W-4?

Yes. Enter the expected qualified overtime, up to $12,500 ($25,000 joint), on line 1b of the Deductions Worksheet and carry the total to Step 4(b). Your employer cannot lower withholding for it without the new form.

Does the W-4 change Social Security or Medicare?

No. Those are a fixed percentage of wages. The W-4 sets federal income tax withholding only, and many states have their own form.

How to Fill Out Form W-4 in 2026, Step by Step

By Jhon W · Published 15 October 2026

Form W-4, the Employee's Withholding Certificate, tells your employer how much federal income tax to take out of each paycheck. Most people only need Step 1 and Step 5: your name, filing status and signature. Steps 2, 3 and 4 are for a second job, children, other income and deductions, and you fill them in only when they apply.

This guide walks through every step of the 2026 form. Each example uses a single filer paid $2,500 every two weeks, where the IRS tables withhold $216.15 a paycheck with only Step 1 filled in.

What Form W-4 does, and what it does not

The W-4 sets withholding, not your tax. Your real tax is worked out on your return in April, and the money withheld during the year is credited against it. Too much withheld comes back as a refund; too little means a balance due and possibly a penalty, as the form itself warns.

Your employer uses the form with IRS Publication 15-T to work out each paycheck. The W-4 has had no allowances since 2020. If you never give your employer a form, or fill it in wrongly, you are treated as a single filer with no other entries.

Step 1: Your details and filing status

Enter your name, address and Social Security number, then tick one filing status:

Single or married filing separately.
Married filing jointly or qualifying surviving spouse.
Head of household: only if you are unmarried and pay more than half the cost of keeping up a home for yourself and a qualifying person.

The status changes the standard amount built into the tables. For 2026 the standard deduction is $16,100 for single filers, $24,150 for head of household and $32,200 for married couples filing jointly.

Step 2: Two jobs, or a spouse who works

Use Step 2 if you hold more than one job at the same time, or if you are married filing jointly and your spouse also works. Without it, each employer withholds as if its job were your only income, so the second paycheck gets the low tax brackets again.

The form gives three options; choose one:

(a) The IRS Tax Withholding Estimator on irs.gov. The most accurate, and required if you or your spouse have self-employment income.
(b) The Multiple Jobs Worksheet. Find the amount in the worksheet's table for your two salaries, divide by the pay periods of the higher-paying job, and enter it in Step 4(c) of that job's W-4.
(c) The checkbox, for exactly two jobs in total. Tick it on both W-4s. Each job is then withheld with half the standard deduction and half-width brackets. It works best when the two jobs pay about the same; when one pays much less than the other, the form warns it can withhold too much.

Example: two jobs with the same pay

A single worker has two jobs, each paying $2,000 every two weeks, $104,000 a year in all. Without Step 2, each job withholds $156.15 a paycheck, $8,120 for the year. The tax on $104,000 is $14,050, so about $5,930 would be due in April. With the Step 2(c) box ticked on both forms, each job withholds $270.19, and the year's withholding matches the tax.

Fill in Steps 3 to 4(b) on one W-4 only, the one for the highest-paying job. Leave them empty on the others, or the same credit is counted twice.

Step 3: Children and other dependents

Step 3 lowers withholding for the child tax credit and the credit for other dependents. Use it only if your total income will be $200,000 or less ($400,000 or less if married filing jointly).

3(a): multiply the number of qualifying children under 17 by $2,200. A child must be under 17 on 31 December, live with you more than half the year and have a Social Security number.
3(b): multiply the number of other dependents, such as a child aged 17 or older or a qualifying relative, by $500.
Add the two, plus any other credits you expect, such as education credits, and enter the total.

With two children under 17, Step 3 is $4,400. That takes $169.23 off each paycheck in our example: withholding falls from $216.15 to $46.92, because $4,400 spread over 26 paychecks is about $169.23.

Step 4: Other income, deductions and extra withholding

Step 4 has three optional lines.

4(a) Other income

Interest, dividends or retirement income that has no tax withheld. Do not include wages or self-employment income here. If you would rather not show other income to your employer, you can put an extra amount in Step 4(c) instead.

4(b) Deductions

Fill in the Deductions Worksheet only if you expect deductions beyond the standard deduction. The 2026 worksheet has new lines for the deductions created in 2025:

Line 1a, qualified tips: up to $25,000, if total income is under $150,000 ($300,000 joint).
Line 1b, qualified overtime: the "and-a-half" part of overtime pay, up to $12,500 ($25,000 joint), with the same income limit. Our guide on how overtime is taxed shows how to work out that amount.
Line 1c, car loan interest: interest on a qualified passenger vehicle loan, up to $10,000, if income is under $100,000 ($200,000 joint).
Lines 3a and 3b, age 65 or older: $6,000 for you and $6,000 for a spouse 65 or older, if income is under $75,000 ($150,000 joint).
Lines 5 to 14: student loan interest, IRA contributions and itemized deductions such as mortgage interest, state and local taxes and charitable gifts, compared with the standard deduction.

Line 15 is the total that goes in Step 4(b). A $5,000 entry lowers withholding in our example from $216.15 to $193.08 a paycheck.

4(c) Extra withholding

Any extra amount you want taken from each paycheck. It is added on top of the table amount, so $50 in Step 4(c) makes the example $266.15. Use it to cover side income, a likely balance due, or the result of the Multiple Jobs Worksheet. It is also the tool for a large bonus, as we explain in how bonuses are taxed.

Step 5: Sign and date

The form is not valid until you sign it. Your employer fills in the Employers Only box: its name, address, the first date of your employment and its employer identification number.

Claiming exempt

You can ask for no federal income tax withholding only if you had no federal income tax liability for 2025 and expect none for 2026. Tick the "Exempt from withholding" box and fill in only Steps 1(a), 1(b) and 5. The exemption ends with the year: give your employer a new W-4 by 16 February 2027.

Social Security and Medicare are still withheld from an exempt employee's pay. The W-4 controls federal income tax only.

When to give your employer a new W-4

You start a new job, or take a second one.
You marry, divorce, or your spouse starts or stops working.
A child is born or adopted, or a dependent no longer qualifies.
You expect a large deduction, such as qualified overtime, or new income without withholding.
At the start of each year. The IRS suggests checking withholding with its estimator every year.

A W-4 from 2019 or earlier still works, but it uses the old allowance system. A new form is required only if you want to change your withholding.

Check the result before you hand it in

Enter the same filing status and Steps 2 to 4 in our take-home pay calculator to see the federal withholding on your next paycheck, line by line from the IRS worksheet, with Social Security, Medicare and your state's tax.

Then compare the year's total withholding with the tax you expect to owe. If they are close, the form is right. If you got a large refund or owed money last year, change Step 3, 4(b) or 4(c) and check again.

Frequently asked questions

Do I need to fill out a new W-4 every year?: No. The form stays in effect until you change it. The exception is an exempt claim, which must be renewed by 16 February each year (16 February 2027 for 2026).
What happens if I don't fill out a W-4?: Your employer withholds as if you were single with no other entries on the form. If you are married or have children, that usually means more tax is withheld than you need.
Should I check the box in Step 2(c)?: Tick it when you have exactly two jobs in total, or you and your spouse each have one, and the pay is similar. Tick it on both forms. If one job pays much more than the other, the Multiple Jobs Worksheet or the IRS estimator is more accurate.
How much is the child amount on the 2026 W-4?: $2,200 for each qualifying child under 17 and $500 for each other dependent, for total income up to $200,000 ($400,000 joint).
Can I claim the overtime deduction on my W-4?: Yes. Enter the expected qualified overtime, up to $12,500 ($25,000 joint), on line 1b of the Deductions Worksheet and carry the total to Step 4(b). Your employer cannot lower withholding for it without the new form.
Does the W-4 change Social Security or Medicare?: No. Those are a fixed percentage of wages. The W-4 sets federal income tax withholding only, and many states have their own form.