How to Change Exemptions on W-4 and Adjust Withholding

To change your exemptions on a W-4, fill out a new 2026 Form W-4, update your filing status, dependents, and any other adjustments, and hand it to your employer’s payroll or HR department. You can do this at any time during the year, as often as you need to. The 2026 form reflects changes under the One Big Beautiful Bill, including a dedicated exemption checkbox and new deductions for tips and overtime that affect how much tax comes out of each paycheck.

When a New W-4 Is Worth Filing

Any meaningful change to your income or household is a reason to revisit your withholding. Getting married or divorced changes your filing status and the standard deduction your employer uses. A new baby adds a $2,200 dependent credit on the 2026 form. A second job, or a spouse who starts working, means two employers are each withholding as if theirs is your only paycheck, which almost always leaves too little tax withheld overall.¹

The direction of the change matters for timing. If your situation shifts in a way that reduces the withholding you’re entitled to claim (for example, you claimed head of household and your qualifying dependent moved out), federal law requires you to submit a new W-4 within 10 days. Changes that would increase your take-home pay, like adding a dependent, have no deadline. Those are voluntary and you can file them whenever you’re ready.²

What to Have Ready

Before you open the form, pull together your Social Security number, your most recent pay stubs, and last year’s tax return. The pay stubs show what has already been withheld this year. The prior return helps you estimate non-wage income like interest, dividends, or freelance earnings. If you plan to itemize deductions for mortgage interest, state taxes, or charitable contributions, have those numbers handy too.

The biggest single decision on the form is filing status. The 2026 W-4 lists four options: single or married filing separately, married filing jointly or qualifying surviving spouse, and head of household.¹ Each carries a different standard deduction, so picking the wrong one throws off the entire calculation. For 2026, the standard deduction is $16,100 for single filers, $32,200 for married couples filing jointly, and $24,150 for heads of household.³ Head of household has strict requirements: you must be unmarried and pay more than half the cost of maintaining a home for yourself and a qualifying dependent. If you’re unsure, single or married filing separately is the safer default until you verify.

Walking Through the 2026 Form

The 2026 W-4 has four steps. Only Step 1 is required. You can download the form at IRS.gov or complete it through your employer’s payroll system.

Step 1: Personal Information and Filing Status

Enter your name, address, Social Security number, and check the box for your filing status.

Step 2: Multiple Jobs or Working Spouse

Complete this step only if you hold more than one job at a time, or you’re married filing jointly and your spouse also works. Without it, both employers apply the full standard deduction and your household effectively claims it twice. The form gives you three ways to handle the shortfall: the online IRS estimator, the Multiple Jobs Worksheet on page 3, or a checkbox that works when there are exactly two jobs with roughly similar pay.¹

Step 3: Dependent Credits

Enter $2,200 for each qualifying child under 17 and $500 for each other dependent, such as a college-age child or an elderly parent you support. These amounts reduce your withholding dollar for dollar.¹ A qualifying child must live with you more than half the year and have a valid Social Security number. A qualifying relative generally must earn less than $5,050 in gross income for the year.⁴

Step 4: Other Adjustments

Step 4 has three optional lines that fine-tune your withholding.

Line 4a is for non-wage income you expect during the year, such as interest, dividends, or retirement distributions. Entering an amount here increases your withholding to cover the tax on income your employer doesn’t see.
Line 4b is for deductions above the standard deduction. If you itemize and expect the total to exceed the standard amount, enter the difference. This reduces your withholding.
Line 4c is a flat dollar amount taken from every paycheck on top of the calculated withholding. People use it as a buffer for hard-to-predict income or simply to build a larger refund.¹

What Changed for 2026

The One Big Beautiful Bill added provisions that change how withholding works in 2026. Qualified tips are now deductible up to $25,000 per year, and overtime pay gets similar favorable treatment. These aren’t automatic payroll adjustments. To get the benefit in each paycheck instead of waiting until you file, you need to submit an updated W-4 that reflects them.⁵

The tips deduction applies to cash tips, including charged tips, received in occupations that customarily received tips before 2025. Mandatory service charges added to a bill don’t count. The provision runs through tax years ending before 2029.⁵

The 2026 form also added a dedicated checkbox for claiming exemption from withholding, replacing the old practice of writing “Exempt” below Step 4(c). The IRS also updated its Tax Withholding Estimator to reflect the OBBB changes, including new provisions for car loan interest and a deduction for seniors.⁶

Claiming Full Exemption from Withholding

If you had zero federal tax liability last year and expect none this year, you can claim complete exemption. On the 2026 form, check the new exemption checkbox below Step 4(c) instead of completing the rest of the form.⁵ This is common for students and part-time workers whose annual income falls below the standard deduction.

An exempt W-4 expires at the end of the calendar year. To keep the exemption, submit a new form by February 15 of the following year. Miss that deadline and your employer must withhold as if you’re single with no other entries on the form, which means noticeably smaller paychecks until you file a corrected W-4.⁷

Submitting the Form and When It Takes Effect

Give the completed W-4 to your HR or payroll department. Many employers now handle it through a secure online payroll portal where you enter the information directly. You don’t send anything to the IRS; your employer keeps the form on file for at least four years.⁷

Federal regulations give your employer until the start of the first payroll period ending on or after the 30th day from receiving your form to apply the changes, though employers may apply the new withholding sooner.⁸ In practice, most companies reflect the change within one or two pay cycles. Check your next pay stub. It should show your updated filing status and a different federal withholding amount. If nothing looks different, follow up with payroll before another cycle passes.

If you’ve never submitted a W-4, your employer must withhold as if you checked single or married filing separately with no adjustments, the maximum withholding scenario for most people.⁹ Keep your own copy of any W-4 you submit, especially if you make mid-year changes; the prior version makes it easier to spot what shifted if your paycheck doesn’t look right.

If the IRS Has Sent Your Employer a Lock-In Letter

In rare cases, the IRS determines that a taxpayer’s withholding is significantly too low and sends a lock-in letter (Letter 2801-C) to the employer. Once the employer receives it, they must disregard any W-4 you submit that would decrease your withholding. You can’t override the letter by simply filing a new form. To get the restriction lifted, send the IRS a written explanation of why a different withholding amount is correct, and they’ll review it before approving any change.¹⁰

Checking Your Numbers with the IRS Estimator

If your situation involves multiple jobs, itemized deductions, freelance income, or any of the new OBBB provisions, the IRS Tax Withholding Estimator at irs.gov/W4app is more reliable than the paper worksheets. It walks you through income, withholding, credits, and deductions, then generates the exact figures to put on your W-4. Most people finish in about 25 minutes.⁶ The estimator can also generate a pre-filled W-4 (or W-4P for pension recipients) that you print and hand to your employer.

Getting your W-4 wrong toward too little withholding can trigger an underpayment penalty. You avoid it by meeting one of two safe harbors: your total withholding and estimated payments cover at least 90% of the current year’s tax, or they cover 100% of last year’s tax (110% if your adjusted gross income exceeded $150,000, or $75,000 if married filing separately).¹¹ Running the estimator once or twice a year and adjusting your W-4 before the gap widens is the simplest protection.

State Withholding Is a Separate Form

The W-4 is a federal form. It doesn’t control state income tax withholding. Most states with an income tax require a separate state withholding certificate. Some accept the federal W-4 for state purposes; many don’t. A few states with flat-rate income taxes don’t need a form at all. Check with your payroll department or your state tax agency. Updating federal withholding without touching state withholding is a common oversight that can leave you short when you file your state return.

1
Internal Revenue Service. Form W-4 2026 Employee’s Withholding Certificate
2
Office of the Law Revision Counsel. 26 USC 3402 – Income Tax Collected at Source
3
Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026
4
Internal Revenue Service. Dependents
5
Internal Revenue Service. Publication 15-T (2026), Federal Income Tax Withholding Methods
6
Internal Revenue Service. Updated Tax Withholding Estimator Lets Millions of Taxpayers Take One, Big, Beautiful Bill Changes Into Account
7
Internal Revenue Service. Topic No. 753, Form W-4, Employees Withholding Certificate
8
eCFR. 26 CFR 31.3402(f)(3)-1 – When Withholding Allowance Certificate Takes Effect
9
Internal Revenue Service. Publication 15-T (2026), Federal Income Tax Withholding Methods
10
Internal Revenue Service. Understanding Your Letter 2801C
11
Internal Revenue Service. Underpayment of Estimated Tax by Individuals Penalty