How to Fill Out the W-4 in 2026: Step-by-Step Guide

The W-4 Employee’s Withholding Certificate tells your employer how much federal income tax to withhold from each paycheck. Getting it right means you won’t owe a surprise tax bill in April — or give the IRS an interest-free loan all year.

What Changed with the 2020 W-4 Redesign

The IRS redesigned the W-4 in 2020, eliminating the old “allowances” system. If you filed a W-4 before 2020 and haven’t updated it, your employer continues using the old system — but you should review whether it still reflects your situation.

The new form has five steps, only two of which are required for everyone.

Step 1: Personal Information (Required)

Enter your:

• Full name
• Social Security number
• Address
• Filing status: Single/Married Filing Separately, Married Filing Jointly, or Head of Household

Your filing status is the most impactful choice on this form. Married filing jointly gets higher standard deductions and wider tax brackets than single filers.

Step 2: Multiple Jobs or Spouse Works (Complete If Applicable)

This step is critical if you have multiple jobs or your spouse works. Each employer withholds as if their job is your only income source. Without adjustment, you’ll be under-withheld.

You have three options:

Option A (Easiest): Use the IRS Tax Withholding Estimator at irs.gov and enter the result directly in Step 4(c).

Option B: Use the Multiple Jobs Worksheet on page 3 of the W-4. This is more accurate.

Option C: Check the box in Step 2(c). This works only if you have exactly two jobs with similar pay. It withholds at a higher rate for both jobs.

Multiple Jobs Worksheet Example

Combined Income	Additional Annual Withholding Needed
Two jobs at $30K each = $60K	~$870 additional
One job $60K + one job $20K = $80K	~$2,430 additional
One job $100K + one job $40K = $140K	~$6,490 additional

Divide the additional withholding needed by the number of pay periods remaining in the year and enter that amount on line 4(c).

Step 3: Claim Dependents (If Applicable)

If your total income is $400,000 or less (married filing jointly) or $200,000 or less (all other filers), you can claim the Child Tax Credit here.

Child Tax Credit amounts:

• Qualifying children under 17: $2,000 per child
• Other dependents: $500 per dependent

Enter the total dollar amount on line 3. This reduces your withholding by telling your employer to account for credits you’ll receive.

Example:

• Married couple, $120,000 combined income
• Two children under 17
• Line 3 entry: $2,000 × 2 = $4,000

Step 4: Other Adjustments (Optional)

Step 4(a): Other Income

If you have income not subject to withholding (freelance work, rental income, dividends), enter the annual amount here. This increases your withholding to cover that extra income.

Common entries:

Income Type	Estimated Amount to Enter
Freelance side income	Gross freelance income × 0.92 × 0.22 (or your bracket)
Rental income (net)	Net rental profit for the year
Investment dividends	Qualified dividends × 0.15 or 0.20

Step 4(b): Deductions

If you expect to itemize deductions and they’ll exceed the standard deduction ($15,000 single / $30,000 married in 2026), use the Deductions Worksheet on page 3.

Common itemizable deductions:

• Mortgage interest
• State and local taxes (capped at $10,000)
• Charitable contributions
• Medical expenses over 7.5% of AGI

Step 4(c): Extra Withholding

If after completing the above steps you still want to ensure you don’t owe taxes, you can request a flat dollar amount of additional withholding per paycheck here.

Common reasons to add extra withholding:

• Self-employment income not easily estimated
• Large expected capital gains
• Bonus income that may be under-withheld
• Previous years where you owed at filing

Step 5: Sign and Date (Required)

Your W-4 isn’t valid without your signature. If your employer asks you to complete a W-4 electronically, follow their system’s signing process.

When to Update Your W-4

Life Event	Action Needed
Got married	Update filing status; complete multiple jobs section
Had a child	Add to Step 3 for Child Tax Credit
Got divorced	Change to Single/Head of Household
Started a second job	Complete Step 2
Got a large raise	May need more withholding
Paid off mortgage	May no longer itemize; adjust Step 4(b)
Retired	File a new W-4 or W-4P for pension/retirement income

Checking Your Withholding Is Correct

A good rule of thumb: your withholding should bring you to within $500 of your actual tax liability — neither owing a large amount nor receiving a very large refund.

The IRS Tax Withholding Estimator (irs.gov/W4App) can help you calculate this precisely.

To understand how your W-4 elections affect your paycheck, use our paycheck calculator — you can model different filing statuses and pre-tax deductions to see the impact on your take-home pay. If you have multiple jobs and want to compare scenarios, try the compare tool.