How to Fill Out a W-4 Form in 2026

What is a W-4 form?

The IRS’s W-4 form, known as the Employee’s Withholding Certificate, is a form used by employers to determine how much federal income tax should be withheld from an employee's paycheck. The form is used to report an employee's withholding allowances, which are based on factors such as the employee's filing status, number of dependents and additional income.

W-4s are only for federal income tax withholding, not state or local tax withholding.

If your financial or personal situation changes, like if you get married, you have a child or your child is no longer considered a dependent, you should update your W-4 form accordingly. By filling out the W-4 form accurately, you can ensure that the right amount of federal income tax is withheld from your paycheck.

How to fill out a W-4 form

When filling out a new W-4 form, you’ll need to at least complete the first section (Step 1), which involves filling out your personal information and entering your filing status, along with the last section (Step 5), which involves signing and dating the form. If other steps apply, you’ll want to make sure you complete those, too.

Below, we’ll go over how to fill out the W-4 form for 2026 according to each section on the form.

Step 1: Enter personal information

In this section, start by filling in your name, address and Social Security number in the spaces provided.

Next, put a check mark or “X” in the box next to your filing status. You can choose from:

• Single
• Married filing jointly or qualifying surviving spouse
• Head of household

Step 2: Multiple jobs or spouse works

If you have more than one job or if you work in a two-income household, you’ll need to complete the applicable sections of Step 3 and Step 4. You can use the IRS tax withholding estimator or the worksheet provided on the W-4 form to calculate your withholding amount more accurately.

Step 3: Claim dependent and other credits

In this section, you’ll need to claim amounts for your dependents and other tax credits. Generally, you’ll multiply the number of qualifying children or other dependents by the specified dollar amount, and then add them together, plus any other tax credits, for the final line.

Step 4: Other adjustments

In this section, you’ll add in information on other adjustments. These adjustments can include items like additional income (such as from interest or retirement income), deductions and any extra withholding.

If you choose to claim an exemption from withholding, you’ll check the box in this section to indicate you qualify for the exemption and understand next steps.

Step 5: Sign here

Once you've filled out the rest of the form, sign and date it to certify the information you provided is accurate.

» RELATED: The Tax Benefits of Owning a Home: Must-Know Deductions and Secrets

Avoid common W-4 issues

Some common issues that can occur when filling out a W-4 form are:

You owe the IRS taxes

Owing the IRS at tax time can be strenuous on your finances and require tax relief help.

To ensure you don’t owe taxes at the end of the year, make sure to:

• Decrease the number of dependents
• Include extra amount you want to withhold on line 4(c)

You get a substantial refund

While a large refund feels like a bonus check at the beginning of the year, it means that you have been lending the IRS your money for free and missing out on larger paychecks throughout the year.

To avoid a large refund and instead receive bigger paychecks throughout the year:

• Increase the number of dependents
• Decrease or eliminate extra income withheld on lines 4(a) or 4(c)
• Increase your deduction amount on line 4(b)

The number of dependents you claim does not have to match how many individuals are in your family or care. You can adjust your dependent number to ensure you get a refund closer to $0.

What are the new W-4 changes?

As a part of the One, Big, Beautiful Bill Act (OBBBA), some new deductions are available, including deductions for qualified tips, overtime compensation, car loan interest and seniors. The standard deduction and child tax credit amounts have also increased.

Generally, changes to the W-4 form have been fairly minor in recent years. The form’s last major update was for the 2020 tax year.

“[The] post-2020 W-4 asks about filing status, other jobs, and credits you may be entitled to claim such as Child Tax Credit,” said Nicole Rosen, enrolled agent from Boundless Advisors. “To me, as a tax professional, it is almost a basic mini-tax return.”

“This is both good and bad,” Rosen said. “It should make withholding more accurate as it will more closely resemble a tax return, but it can also cause many people frustrations. They may be used to receiving a large refund, but the new W-4 means smaller refunds or potentially no refund.”

» MORE: How To File Your Taxes for Free

FAQ

Bottom line

Filing a W-4 form with your employer is an important step to ensure the correct amount of federal income tax is withheld from your paycheck. Make sure to regularly review and update your W-4 form if your circumstances change. If you’re concerned about owing taxes at the end of the year, consider contacting a tax relief company.