Form W-4 tells your employer how much federal income tax to withhold from each paycheck. The form was redesigned in 2020 and the 2026 version keeps that five-step layout — no more “allowances.” Filled out well, it gets you close to a zero balance at tax time. Filled out carelessly, it can leave you with a surprise bill or an oversized refund (an interest-free loan to the government). Here is how each step works.
Step 1: Personal Information and Filing Status
Enter your name, address, and Social Security number, then choose a filing status:
- Single or Married filing separately
- Married filing jointly or Qualifying surviving spouse
- Head of household
Your filing status determines which standard deduction and bracket schedule the employer uses, so this is the single most important box. Steps 1 and 5 are the only required steps; Steps 2 through 4 are completed only if they apply to you.
Step 2: Multiple Jobs or a Working Spouse
This is where most withholding errors happen. The default W-4 assumes each job is your only job. If you have two jobs, or you are married filing jointly and your spouse also works, the standard deduction and lower brackets get applied twice — and you under-withhold.
You have three options:
- Use the IRS Tax Withholding Estimator (most accurate).
- Fill out the Multiple Jobs Worksheet on page 3.
- If you have exactly two jobs that pay roughly the same, check box 2(c) on the W-4 for both jobs.
Step 3: Claim Dependents and Other Credits
If your income is below the Child Tax Credit phase-out, multiply:
- Qualifying children under 17 by $2,000
- Other dependents by $500
Add them and enter the total. This is an annual reduction in withholding, so it raises your take-home pay. Important: in a two-earner household, only one spouse should claim the dependents — claiming them on both W-4s under-withholds.
Step 4: Other Adjustments (Optional)
This step fine-tunes your withholding:
- 4(a) Other income: Add interest, dividends, or retirement income not subject to withholding so extra tax is taken from your paycheck instead of leaving you with a bill.
- 4(b) Deductions: If you itemize or have other above-the-line deductions beyond the standard deduction, enter the amount from the Deductions Worksheet to reduce withholding.
- 4(c) Extra withholding: Enter a flat dollar amount to withhold each pay period. This is the simplest lever if you consistently owe a little each April.
Step 5: Sign, Date, and Submit
The form is invalid without your signature. Hand it to your employer (HR or payroll), never to the IRS.
A Quick Example
Maria is single, has one job, and one child under 17. She completes Step 1 (Single), skips Step 2 (one job), enters $2,000 in Step 3, leaves Step 4 blank, and signs Step 5. Her employer reduces her annual withholding by $2,000, spread evenly across her paychecks.
By contrast, a married couple where both spouses earn similar salaries should each check box 2(c), and only the higher earner should fill in Step 3.
When to Redo Your W-4
File a fresh W-4 after a marriage or divorce, a new baby, a second job, a big raise, or a spouse starting or leaving work. Mid-year changes only affect future paychecks, so update promptly.
To see exactly how your entries change your take-home pay before you submit anything, model it with the W-4 withholding calculator and then check the result against the paycheck calculator.