What is Form W-4
Form W-4 tells your employer how much federal tax to withhold from your paycheck. Filling it out correctly means you won't owe a large sum in April or give the government an interest-free loan all year.
The IRS redesigned the W-4 in 2020, eliminating confusing "allowances" and making it more transparent. You now enter direct information about dependents, other income, and deductions.
How to Fill Out Each Section
Step 1: Personal Information
Enter your name, address, Social Security number, and filing status. Your filing status affects your tax brackets and standard deduction.
Step 2: Multiple Jobs or Spouse Works
Complete this section if you have more than one job or if you're married and both work. This prevents under-withholding. Use the IRS online calculator for accuracy.
Step 3: Claim Dependents
If your income is under $200,000 (single) or $400,000 (married), multiply the number of children under 17 by $2,200 (OBBBA raised the base from $2,000 effective tax year 2025) and other dependents by $500. This reduces your withholding.
Step 4: Other Adjustments (Optional)
Here you can add extra withholding, claim additional deductions (mortgage interest, charitable donations), or report other income (freelance, investments).
Key Takeaways
- The W-4 controls how much tax is withheld from your paycheck
- Update it when your life circumstances or income change
- Use the IRS calculator for multiple jobs or complex situations
- Review your first paycheck after changes to verify withholding
Frequently Asked Questions
Find answers to common questions about your taxes and our calculator.
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