How to Update W-4 Withholding Now That Allowances Are Gone

To update your W-4 withholding, complete the current five-step Form W-4 (Employee’s Withholding Certificate), give it to your employer’s payroll or HR department, and check your next pay stub to confirm the change went through. The form no longer uses “allowances.” Instead, you enter your filing status, dollar amounts for dependent credits, and any adjustments for a second job, other income, or extra withholding you want taken from each paycheck.

Why the Form Looks Different

The IRS redesigned the W-4 in 2020 after Congress suspended personal exemptions in the 2017 tax overhaul, which had been the basis for the old allowance system. The current form replaces allowance counts with straightforward dollar entries for credits, deductions, and extra withholding.¹

If you last filed a W-4 before 2020, that old form is still in effect and your employer isn’t required to make you submit a new one. But as soon as you want to change anything about your withholding, you have to use the current version.

Filling Out the Current W-4

Download the latest Form W-4 from irs.gov, or open it inside your employer’s payroll portal. Most people only need Steps 1, 3, and 5. Steps 2 and 4 exist for specific situations like multiple jobs, non-wage income, or itemized deductions.¹

Step 1: Personal Information and Filing Status

Enter your legal name, address, and Social Security number. Your name must match your Social Security card exactly, or the IRS may have trouble crediting your tax payments.²

Then check one filing status: Single or Married Filing Separately; Married Filing Jointly or Qualifying Surviving Spouse; or Head of Household. Filing status controls which standard deduction and tax brackets your employer applies. For 2026 the standard deduction is $16,100 for single filers, $32,200 for joint filers, and $24,150 for head of household.³ Picking the wrong status is a common reason withholding ends up off.

Step 3: Dependents and Credits

If you’ll earn $200,000 or less ($400,000 or less if married filing jointly), you can lower your withholding by entering dollar amounts for dependents:²

Multiply qualifying children under 17 by $2,200.
Multiply other qualifying dependents (older children, parents, other relatives) by $500.

Add the two amounts and put the total on Step 3. To qualify for the $2,200 credit, the child must be under 17 at the end of the tax year, live with you more than half the year, and have a valid Social Security number.²

Step 2: Multiple Jobs or a Working Spouse

If you hold more than one job at once, or you’re married filing jointly and your spouse also works, Step 2 keeps each employer from withholding as if its paycheck is your only income. Skipping this step is a common reason people owe at tax time.⁴ You have three options:

Use the IRS Tax Withholding Estimator at irs.gov/W4app (Step 2a). It walks through your whole tax picture and produces a dollar amount to enter on Step 4(c). Your employer only sees the extra withholding number, not the second job.⁵
Complete the Multiple Jobs Worksheet on page 3 of the form (Step 2b), which produces the same kind of Step 4(c) amount.²
Check the box in Step 2(c) on both W-4s if you have exactly two jobs paying roughly the same amount.

Whichever method you use, put credits and deductions (Steps 3 and 4) only on the W-4 for your highest-paying job. Leave those fields blank on the others.⁵ For situations involving capital gains, alternative minimum tax, or self-employment income, the IRS points to the worksheets in Publication 505 rather than the online estimator.⁴

Step 4: Other Income, Deductions, and Extra Withholding

Step 4 lets you fine-tune three specific things:²

Step 4(a) is for other income that won’t have taxes withheld: interest, dividends, retirement distributions, and the like. Enter the expected annual total to raise your per-paycheck withholding.
Step 4(b) is for itemized deductions above your standard deduction. The Deductions Worksheet on the form helps you compute the number to enter. A larger number here lowers your withholding.
Step 4(c) is a flat extra dollar amount you want withheld from every paycheck. Results from the Multiple Jobs Worksheet and the online estimator also go here.

Step 5: Sign and Date

Your signature completes the form. If you fill in only Steps 1 and 5, your employer withholds based on your filing status alone, with no dependent credits or other adjustments.¹ That default works fine for many single filers with one job and no dependents.

Submitting the Form to Your Employer

Deliver the completed W-4 to payroll or human resources. Some employers still accept a signed paper copy; many larger ones use portals like Workday or ADP, where you enter the same figures and filing status inside a “Pay” or “Tax Withholding” screen. If you submit electronically, save the confirmation email or receipt in case a paycheck comes out wrong later. Your employer must implement a properly completed W-4 and cannot refuse it.²

When the Change Shows Up on Your Paycheck

Federal rules give employers up to 30 days to put a new W-4 into effect. The updated withholding must begin no later than the start of the first payroll period ending on or after the 30th day after your employer received the form.⁶ Employers with automated payroll usually process changes faster. If you turn the form in partway through a pay period, expect the change on the following check, since payroll is often finalized several days before pay day.

Check the federal income tax line on your next one or two pay stubs. If the amount hasn’t changed after two full pay cycles, contact payroll to confirm the form was processed.

When You Have to Update Your W-4

You can file a new W-4 whenever you want. Certain changes, however, require you to file within 10 days if the change reduces the withholding you were claiming and your remaining withholding for the year won’t cover your tax bill:⁷

You can no longer claim a child tax credit you had accounted for (a child turned 17, for example).
Your other tax credits drop by more than $500 from what’s on your current W-4.
Your deductions drop by more than $2,300 from what’s on your current W-4.

Beyond the mandatory triggers, the IRS suggests reviewing your withholding at least once a year and after any life event that shifts your tax picture: marriage, divorce, a new baby, buying a home, starting a side job, or a spouse entering or leaving the workforce.⁴

Claiming Exempt from Withholding

If you had zero federal income tax liability last year and expect none this year, you can claim exempt. Write “Exempt” in the space below Step 4(c), complete Steps 1 and 5, and leave Steps 2 through 4 blank. Both conditions have to be true.²

An exempt W-4 lasts only through the end of the calendar year. To keep the exemption, submit a new form by February 15 of the following year. Otherwise your employer will start withholding as if you’re a single filer with no adjustments, which usually produces the highest withholding rate.⁶

If You Never Turn In a W-4

Start a new job without submitting a W-4 and your employer will withhold as if you’re single with no adjustments, credits, or extra deductions.⁸ For most people, that pulls more tax than necessary out of every paycheck. Turning in a completed W-4 early gets your withholding aligned with your real situation.

Avoiding an Underpayment Penalty

If your withholding comes up too short, the IRS can charge an underpayment penalty with interest. As of early 2026 that rate is 7% per year on the underpaid amount.⁹ You generally avoid the penalty if you meet any one of these safe harbors:¹⁰

Your return shows a balance due under $1,000 after withholding and credits.
Your total payments cover at least 90% of the current year’s tax.
Your total payments equal or exceed 100% of last year’s tax (110% if your AGI was over $150,000, or $75,000 if married filing separately).

Running the IRS Tax Withholding Estimator once or twice a year, and after any big life change, is the simplest way to stay inside those margins. If you find yourself falling short partway through the year, file a new W-4 with a higher amount on Step 4(c) to catch up over your remaining paychecks.¹¹

State Withholding Is a Separate Form

Updating the federal W-4 doesn’t change your state income tax withholding. Some states accept the federal form for state purposes; many require their own. Ask payroll or check your state tax agency for the right form. If you’re changing federal withholding because of marriage, a new dependent, or another life event, update the state form at the same time.

1
Internal Revenue Service. FAQs on the 2020 Form W-4
2
Internal Revenue Service. Form W-4 2026 Employee’s Withholding Certificate
3
Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026
4
Internal Revenue Service. IRS Tax Withholding Estimator Helps Taxpayers Get Their Federal Withholding Right
5
Internal Revenue Service. Tax Withholding Estimator FAQs
6
Internal Revenue Service. Publication 15 (2026), (Circular E), Employer’s Tax Guide
7
Internal Revenue Service. Publication 505, Tax Withholding and Estimated Tax
8
Internal Revenue Service. Withholding Compliance Questions and Answers
9
Internal Revenue Service. Quarterly Interest Rates
10
Internal Revenue Service. Underpayment of Estimated Tax by Individuals Penalty
11
Internal Revenue Service. Pay As You Go, So You Won’t Owe: A Guide to Withholding, Estimated Taxes and Ways to Avoid the Estimated Tax Penalty