How to Adjust Your W-4 Withholding for 2026
To adjust your federal withholding, submit a new W-4 to your employer. The key sections are Step 2 (multiple jobs), Step 3 (dependents), and Step 4 (extra withholding or deductions). For 2026, Step 4(b) is especially important if you qualify for the new OBBBA tips or overtime deductions, since adding those deductions to your W-4 can increase your take-home pay immediately rather than making you wait for a refund.
When to update your W-4
You should file a new W-4 when any of these events occur:
- Marriage or divorce: Your filing status changes, which shifts your bracket thresholds and standard deduction ($16,100 single vs. $32,200 MFJ).
- New child or dependent: You gain eligibility for the Child Tax Credit ($2,200 per child in 2026), which goes on Step 3.
- Starting a second job or your spouse starts working: Complete Step 2 to avoid under-withholding from combined income.
- New OBBBA eligibility: Starting a tipped job or moving to overtime-eligible work means you can add deductions on Step 4(b).
- Large refund or balance due last year: A refund over $1,000 means you are withholding too much; a balance due means too little.
- Significant raise or pay cut: Your marginal rate may change, requiring a withholding adjustment.
Step-by-step guide (Steps 1-4)
The 2026 W-4 has five steps. Here is what to put in each one:
Step 1: Personal information
Enter your name, address, Social Security number, and filing status. Choose one of three options: Single (or Married Filing Separately), Married Filing Jointly, or Head of Household. This drives which bracket table and standard deduction your employer uses.
Step 2: Multiple jobs or spouse works
Complete this only if you have more than one job or your spouse also works (and you file jointly). You have three options:
- IRS Tax Withholding Estimator: The most accurate method. The online tool generates the exact dollar amounts for Steps 3 and 4.
- Multiple Jobs Worksheet: Use the table on page 3 of the W-4 instructions to look up an additional withholding amount.
- Check the box: If there are only two jobs total with similar pay, both W-4s should check the Step 2(c) box. This roughly doubles the withholding per job.
Step 3: Claim dependents
Multiply your number of qualifying children by $2,200 and enter the total. If you have other dependents, add $500 per dependent. This amount directly reduces the tax your employer withholds each pay period.
Step 4: Other adjustments
- 4(a) Other income: Enter income not from jobs that you want withheld on (dividends, interest, retirement distributions). This increases withholding.
- 4(b) Deductions: Enter deductions beyond your standard deduction. This includes itemized deductions above the standard amount, student loan interest, and OBBBA deductions. This decreases withholding.
- 4(c) Extra withholding: A flat dollar amount withheld each pay period on top of the calculated amount. Use this as a catch-all if other steps do not produce the result you want.
How to account for OBBBA deductions on Step 4(b)
If you qualify for the OBBBA tips or overtime deductions, you can reduce your withholding now instead of waiting until you file your return. The deductions to consider:
- Tips deduction: Up to $25,000 per year for employees in customarily tipped occupations
- Overtime premium deduction: Up to $12,500 per year for single/HoH filers ($25,000 for MFJ) for FLSA non-exempt employees
To claim the benefit during the year, estimate your expected annual OBBBA deductions and add that amount to W-4 Step 4(b). The W-4 instructions include a Deductions Worksheet where you can combine your standard or itemized deductions with these above-the-line deductions.
Example: Adjusting Step 4(b) for overtime
Sarah is a single filer who earns overtime regularly and expects to accumulate $12,500 in deductible overtime premiums during 2026. She does not itemize, so her baseline deduction is the standard deduction of $16,100.
On the Deductions Worksheet, she enters $16,100 (standard deduction) + $12,500 (OBBBA overtime) = $28,600.
She then subtracts the standard deduction amount of $16,100 and enters the result ($12,500) on Step 4(b).
At the 22% marginal rate, this reduces her annual withholding by approximately $2,750, adding about $106 to each biweekly paycheck.
Be conservative with your estimate. If you over-estimate your OBBBA deductions on the W-4, you will have less withheld than you owe and could face a balance due at filing. Use the W-4 withholding calculator to model your specific situation.
Common mistakes
- Skipping Step 2 with dual incomes: This is the most frequent cause of unexpected tax bills. If both spouses work, at least one W-4 must account for the other income.
- Filing status mismatch: Selecting "Single" on the W-4 when you plan to file jointly (or vice versa) produces incorrect withholding because the employer uses different bracket tables for each status.
- Forgetting to update after life changes: A W-4 from three years ago does not reflect a new child, marriage, or income change. Review annually at minimum.
- Confusing withholding with actual tax: Withholding is an estimate paid throughout the year. Your actual tax is calculated on your return. The two should be close, but they rarely match exactly.
- Over-claiming OBBBA deductions: Only claim the tips or overtime deduction on Step 4(b) if you are confident you qualify and can estimate the amount accurately. The tips deduction requires a customarily tipped occupation, and the overtime deduction covers only the premium portion of overtime pay.
For a full breakdown of every paycheck deduction, see the Paycheck Withholding Guide for 2026. To run specific scenarios, try the paycheck calculator.