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How to fill out a W-4 in 2026: a step-by-step guide

Step-by-step guide to the 2026 Form W-4: filing status, multiple jobs, dependents, the new deductions worksheet, the exempt box and what each one does.

By CalcBloc Editorial Team9 min read

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Form W-4 tells your employer how much federal income tax to take out of each paycheck. Fill it in well and your withholding lands close to the tax you actually owe: no big bill in April, no oversized refund that was really an interest-free loan to the government.

The 2026 form has five steps, and most people only need two of them. This guide goes through each step in order, explains what the new 2026 changes mean, and shows what each choice does to a real paycheck. The official form and its instructions are on the IRS website.IRS

Prefer to see the effect before you sign? Enter your W-4 choices in the paycheck calculator and compare.

What’s new on the 2026 Form W-4

IRS Publication 15-T lists two changes for 2026:IRS

  1. The Deductions Worksheet covers the new federal deductions. P.L. 119-21, the 2025 tax law, created deductions for qualified tips, qualified overtime pay, interest on a qualifying car loan and a deduction for people 65 and older. The Step 4(b) worksheet now has lines for each, so you can lower your withholding during the year instead of waiting for a refund. It also has a line for the new charitable deduction for people who take the standard deduction.
  2. A checkbox for claiming exemption. If you qualify to be exempt from federal income tax withholding, you now check a box below Step 4(c). Before 2026 you wrote “Exempt” in that space.

The Step 3 amount per qualifying child under 17 on the 2026 form is $2,200.

Step 1: Personal information and filing status

Everyone completes Step 1: name, address, Social Security number and filing status. The form’s caution note says you (and your spouse, if filing jointly) need a Social Security number valid for employment to claim certain credits and deductions.

Step 1(c) has three choices:

  • Single or Married filing separately
  • Married filing jointly or Qualifying surviving spouse
  • Head of household, which the form says to check only if you are unmarried and pay more than half the costs of keeping up a home for yourself and a qualifying individual.

Your choice sets which withholding table your employer uses and how much standard deduction is built in. Under the 2026 percentage method, payroll subtracts $12,900 a year for married filing jointly or $8,600 for other statuses before using the tables (unless the Step 2 box is checked), and the tables themselves start with a zero-rate band. Together they equal the 2026 standard deduction: $16,100 single, $32,200 married filing jointly, $24,150 head of household. Our paycheck tax guide explains the method step by step.

If you never give your employer a W-4, the IRS tells employers to withhold as if you checked “Single or Married filing separately” and made no other entries.

Step 2: Multiple jobs or spouse works

Complete Step 2 if you hold more than one job at the same time, or you are married filing jointly and your spouse also works. Without it, each employer withholds as if its job were your household’s only income, giving each one the full standard deduction and the lowest brackets. Together that under-withholds.

The form asks you to do only one of these:

  • (a) Use the IRS Tax Withholding Estimator at irs.gov/W4App for the most accurate result. The form says to use this option if you or your spouse have self-employment income.
  • (b) Use the Multiple Jobs Worksheet on page 3 of the form. It uses tables of household salaries to give an annual amount of extra tax, which you divide by the number of paydays at your highest-paying job and enter in Step 4(c) on that job’s W-4.
  • (c) Check the box if there are only two jobs in total. Do the same on the W-4 for the other job. The form explains that checking the box cuts the standard deduction and tax brackets in half for each job. That is accurate when the two jobs pay about the same; if the pay is very different, more tax than necessary may be withheld.

Then complete Steps 3 through 4(b) on the W-4 for only one job, ideally the highest-paying one, and leave them blank on the others.

Step 3: Claim dependent and other credits

Step 3 turns credits into lower withholding. The form says to use it 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.
  • 3(b): multiply the number of other dependents (for example an older child or a qualifying relative) by $500.
  • Add the two, plus an estimate of any other credits you expect, such as education credits or the foreign tax credit, and enter the total.

Payroll divides the Step 3 total by the number of paydays and subtracts it from each paycheck’s withholding. The form notes that including other credits here increases your paycheck and reduces your refund.

Step 4: Other adjustments

4(a) Other income

Enter income you expect this year that will not have tax withheld and is not from a job, such as interest, dividends or retirement income. Payroll adds it to your annual wages before applying the tables, so more is withheld. The form notes that if you complete 4(a), you likely will not need to make estimated tax payments for that income. If you would rather not share this, you can put an equivalent extra amount in 4(c) instead.

4(b) Deductions and the 2026 Deductions Worksheet

Use the Deductions Worksheet on page 4 if you expect to claim more than the basic standard deduction. The result on line 15 goes in Step 4(b), and payroll subtracts it from your annual wages before applying the tables. The worksheet’s main lines:

Worksheet lineWhat it covers2026 amounts
1aQualified tipsUp to $25,000 if total income is under $150,000 ($300,000 joint)
1bQualified overtime: the “and-a-half” part of time-and-a-halfUp to $12,500 ($25,000 joint), same income test as tips
1cInterest on a qualifying passenger vehicle loanUp to $10,000 if total income is under $100,000 ($200,000 joint)
3a, 3bAge 65 or older, for you and your spouse$6,000 each if total income is under $75,000 ($150,000 joint)
5Student loan interest, deductible IRA contributions, educator expenses and other adjustmentsYour estimate
6 to 10Itemized deductions (medical, state and local taxes, mortgage interest, gifts to charity) with the worksheet’s limitsYour estimate
11Your standard deduction$16,100 single, $32,200 joint, $24,150 head of household
12Cash gifts to charity if you take the standard deductionUp to $1,000 ($2,000 joint)

The worksheet only counts itemized deductions to the extent they exceed the standard deduction, so most people who do not itemize will enter just the new deductions, any adjustments and their line 12 charitable gifts. For eligibility details, the form points to the Instructions for Schedule 1-A (Form 1040). The new deductions apply for tax years through 2028.IRS

Remember that tips and overtime are still subject to Social Security and Medicare. The deductions lower income tax only.

4(c) Extra withholding

Enter any additional amount you want withheld from each paycheck, including the result from the Multiple Jobs Worksheet. This is the simplest lever if you owed tax last year or have side income: a fixed extra amount every payday.

Claiming exemption from withholding

You can claim exemption for 2026 only if you meet both conditions on page 2 of the form: you had no federal income tax liability in 2025, and you expect none in 2026. If so, check the “Exempt from withholding” box below Step 4(c), complete Steps 1(a), 1(b) and 5, and leave everything else blank.

Exemption lasts one year. The form says you will need to submit a new W-4 by February 16, 2027 to stay exempt. If you claim exemption and turn out to owe tax, you may owe penalties as well. Exemption covers federal income tax only; Social Security and Medicare are still withheld.

Step 5: Sign and date

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

What each W-4 choice does to your paycheck

Here is the same $75,000 salary, single filer in Texas, paid every two weeks, with different W-4 entries. Each figure is take-home pay per paycheck from our paycheck calculator:

W-4 entriesTake-home per paycheck
Step 1 only (single)$2,369
Step 2 box checked$2,188
Step 3: two children under 17$2,538
Step 4(b): $10,000 of deductions$2,448
Step 4(c): $50 extra per paycheck$2,319

The pattern:

  • Step 2 lowers take-home pay, because it removes the double standard deduction a two-earner household would otherwise get.
  • Step 3 raises take-home pay by the credit amount spread across the year.
  • Step 4(a) lowers take-home pay; Step 4(b) raises it by roughly your deduction times your tax bracket.
  • Step 4(c) lowers take-home pay by exactly the amount you enter.

None of these changes your actual tax for the year. They only change how much is paid during the year versus when you file. To see how your withholding compares with your likely 2026 tax, use the federal income tax calculator.

When to submit a new W-4

There is no need to fill in a new W-4 every year unless you are claiming exemption. Submit a new one when something changes your tax picture:

  • You marry or divorce, or your spouse starts or stops working.
  • You have or adopt a child, or a dependent ages out of the child tax credit.
  • You take a second job or leave one.
  • You expect a large change in other income, deductions or credits, including the new deductions for tips, overtime or seniors.
  • You owed a lot, or got a much larger refund than you wanted, last year.

The form suggests using the Tax Withholding Estimator if you are filling it in partway through the year, expect to work only part of the year, receive bonuses or other irregular income, or want the most accurate result for multiple jobs. It also suggests rechecking at the start of each year.

Common W-4 mistakes

  • Two earners, no Step 2. The most common cause of an unexpected tax bill for married couples.
  • Claiming dependents on both spouses’ forms. Step 3 belongs on one W-4 only.
  • Using head of household without qualifying. It gives a larger built-in deduction and wider brackets, so the wrong status under-withholds.
  • Assuming tips and overtime are untaxed. They are still withheld on unless you enter the expected deduction in Step 4(b).
  • Forgetting state forms. Many states have their own withholding certificate. Your W-4 controls federal withholding only. Check your state’s paycheck page for its form.

Frequently asked questions

Should I claim 0 or 1 on my W-4?

That question is from the old form. Since 2020 the W-4 has no allowances. Instead you choose a filing status and enter dollar amounts for jobs, credits, other income, deductions and extra withholding. If you still have a pre-2020 form on file, your employer keeps using it until you submit a new one.

How do I get a bigger refund?

Have more withheld than you owe, most simply by entering an amount in Step 4(c). Keep in mind that a refund is your own money returned without interest; withholding closer to your real tax gives you that money in each paycheck instead.

How do I stop owing tax every year?

Check Step 2 if you or your spouse have more than one job, enter other income in Step 4(a), or add extra withholding in Step 4(c). The IRS Tax Withholding Estimator can tell you how much.

Does the W-4 affect Social Security and Medicare?

No. Those are flat percentages of your wages and do not depend on the W-4. The W-4 affects federal income tax withholding only.

Does the 2026 W-4 handle the new deductions automatically?

No. Your employer only reduces withholding for the tips, overtime, car loan interest or senior deductions if you enter them through the Deductions Worksheet in Step 4(b). Otherwise you get the benefit when you file your return.

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