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The W-4 Controls How Much Tax Is Withheld From Your Paycheck
When you start a new job, your employer gives you a W-4 form. What you write on it tells your employer how much federal income tax to take out of each paycheck. Get it right and you will owe little to nothing at tax time. Get it wrong and you could owe a big bill or give the IRS an interest-free loan all year.
Rates and figures as of May 2026.
The Five Steps on the W-4
The current W-4 form has five steps. Only Steps 1 and 5 are required for everyone. The rest are optional and only apply to certain situations.
Step 1: Personal Information
Write your name, address, Social Security number, and filing status. Filing status options are Single, Married Filing Jointly, and Head of Household. Choose the one that matches how you plan to file your taxes.
Step 2: Multiple Jobs or Spouse Works
Fill this out if you have more than one job or if you are married and your spouse also works. You have three options:
- Use the IRS Tax Withholding Estimator online for the most accurate result.
- Use the Multiple Jobs Worksheet on page 3 of the form.
- Check the box in Step 2(c) if you have exactly two jobs with similar pay. This is the simplest option but may not be perfectly accurate.
Skip Step 2 if you only have one job and your spouse does not work.
Step 3: Claim Dependents
If you have children or other dependents, this step reduces your withholding. For each qualifying child under 17, multiply by $2,000. For other dependents, multiply by $500. Write the total in the box.
Skip this if no one claims you as a dependent on their taxes.
Step 4: Other Adjustments (Optional)
This step has three parts:
- 4(a): Add other income not from jobs, like freelance work or investment income. Adding income here increases your withholding so you do not owe a big bill later.
- 4(b): Add deductions if you plan to itemize. This reduces your withholding.
- 4(c): Request extra withholding in whole dollars if you want more taken out each pay period.
Step 5: Sign and Date
Sign the form and give it to your employer. You are done.
Common Mistakes to Avoid
- Not updating your W-4 after a major life change (marriage, divorce, new baby, second job).
- Claiming too many deductions and owing a large bill in April.
- Forgetting to account for freelance or investment income in Step 4(a).
- Using an old W-4 form. The IRS redesigned it in 2020. Do not use anything before that year.
When Should You Update Your W-4?
You should update it anytime your tax situation changes. Common triggers include getting married or divorced, having a child, getting a second job, starting freelance work, or getting a significant raise or pay cut.
If you earn freelance income on top of your regular job, be sure to read our guide on paying off IRS tax debt in case you end up owing. It is also smart to keep a solid emergency fund to cover any unexpected tax bill. And once your withholding is dialed in, put extra savings into a high-yield savings account.
Frequently Asked Questions
Do I have to fill out a new W-4 every year?
No. Your W-4 stays in effect until you change it. Only update it when your tax situation changes.
What happens if I do not fill out a W-4?
Your employer withholds taxes as if you are single with no other adjustments. This often means more withholding than necessary.
Can I claim exempt on my W-4?
Only if you had zero federal tax liability last year and expect zero this year. Most workers do not qualify.
How do I fill out a W-4 if I have two jobs?
Complete Step 2 on your W-4. Use the IRS Withholding Estimator or the Multiple Jobs Worksheet on the form for the most accurate result.
Does a W-4 affect state taxes?
No. The federal W-4 only affects federal withholding. Most states have their own separate withholding form.