W-4 Withholding Calculator (2026)
Fill out your W-4 with confidence. Enter your wages, pay schedule, and W-4 choices, and this calculator runs the 2026 IRS Publication 15-T percentage method — the same math your employer’s payroll uses — to show the federal income tax withheld from each paycheck and whether you’re on track to owe or get a refund.
Most oversized refunds and surprise tax bills come from a mis-set W-4. This tool pinpoints the fix: how much to add to Step 4(c) extra withholding if you’re short, or how much to claim in Step 3 if too much is coming out — so you land near $0 at filing instead of lending the IRS money interest-free.
Fine-tune (optional)
Leave “actual withheld” blank to estimate from your W-4 above. Enter the number from a recent pay stub for a precise refund-or-owe figure. “Paychecks left” spreads any fix over the rest of the year.
Projected refund at tax time
$0
if your W-4 stays as entered
- Federal tax withheld per paycheck
- $253
- Withheld over the year
- $6,570
- Estimated tax for the year
- $6,570
- Income tax before credits
- $6,570
To land near $0 at filing
Your withholding already tracks your tax closely — no W-4 change needed.
Withheld vs. tax owed (for the year)
Estimate only — not tax advice. Models federal income-tax withholding for one job using the 2026 IRS Publication 15-T percentage method (Form W-4 rev. 12/8/2025). It excludes Social Security and Medicare (which the W-4 doesn’t change), state tax, and credits beyond the child/other-dependent credits. The IRS notes withholding worksheets “don’t account for all possible situations” — self-employment or large investment income, both spouses working, or part-year work can shift the result, and the “no tax on tips / overtime” deductions are entered as Step 4(b) amounts and reconciled at filing on Schedule 1-A.
Calculation Formulas
Publication 15-T annualizes your wages, applies the standard-withholding rate schedule (the checkbox in Step 2 switches to a higher, half-bracket schedule), subtracts your Step 3 credits per paycheck, then adds any Step 4(c) extra. This is the exact math your employer’s payroll runs.
Example:
On $70,000 single, paid every two weeks with a blank W-4, about $253 of federal income tax is withheld each paycheck (~$6,570 a year).
The estimator projects your withholding across the year and compares it to your actual tax. A positive number is a refund; a negative number is a balance due. To reach ~$0, a shortfall is divided by the paychecks left in the year to give a Step 4(c) amount.
Key Figures
| Figure | Value | Description |
|---|---|---|
| Standard deduction (2026) | $16,100 / $32,200 / $24,150 | Single / married filing jointly / head of household, from Rev. Proc. 2025-32. |
| Child Tax Credit | $2,200 per child | Per qualifying child under 17 on Step 3 ($500 per other dependent); phases out over $200,000 ($400,000 joint). |
| Multiple-jobs threshold | $120,000 | Above this per job, or with more than three jobs, the W-4 routes you to the IRS estimator or Pub. 505. |
Note: Results are estimates for planning purposes. Rates, fees, taxes, and insurance vary by lender and location — confirm exact figures with a licensed professional before making financial decisions.
Standards & Sources
Last verified: August 2026
- Publication 15-T, Worksheet 1A
Withholding uses the 2026 Percentage Method for Automated Payroll Systems (Pub. 15-T, print date 12/3/2025). The two rate schedules are derived directly from the 2026 tax brackets and standard deduction — exactly how the IRS builds them — so withholding and tax liability can’t drift apart.
- Form W-4 (rev. December 8, 2025)
Steps 1–4 map straight to the worksheet: filing status and the Step 2(c) checkbox pick the rate schedule; Step 3 credits and Step 4(a)/(b)/(c) enter as annual amounts. The $2,200 child-credit multiplier reflects the current form.
- Scope and accuracy
Covers federal income-tax withholding for one job. The IRS notes withholding worksheets don’t account for every situation — self-employment or large investment income, both spouses working, and part-year employment can change the result. Social Security/Medicare, state tax, and the tips/overtime deductions (reconciled on Schedule 1-A) are outside this estimate.
How to Use This Calculator
- Enter your annual wages for this job and how often you’re paid.
- Set your filing status, the Step 2(c) multiple-jobs checkbox, and your dependents (children under 17 and other dependents).
- Add any other income, extra deductions, or extra withholding you’ve entered on Steps 4(a)–(c).
- Read your per-paycheck withholding and projected refund or balance due, then apply the suggested Step 3 or Step 4(c) amount to your W-4.
Frequently Asked Questions
How do I fill out a W-4 to get a bigger paycheck or a smaller refund?
A large refund means too much is being withheld. To keep more each paycheck, claim your dependents in Step 3 (children under 17 × $2,200, other dependents × $500) and remove any extra amount in Step 4(c). This calculator shows how much to enter to bring your withholding down to roughly break even.
What is Step 4(c) on the W-4?
Step 4(c) is a flat extra dollar amount withheld from every paycheck, on top of the normal calculation. It’s the simplest way to cover a shortfall — from a second job, freelance income, or investment income. If this tool projects you’ll owe, it divides the gap by your remaining paychecks to give you the exact Step 4(c) amount.
Why do I owe taxes when both spouses work?
When two jobs each run a standard W-4, each one withholds as if it were your only income, so together they under-withhold. The fix is to check the box in Step 2(c) on both W-4s (for roughly equal pay) or to add extra withholding in Step 4(c) on the higher-paying job. This calculator lets you toggle the Step 2(c) box to see the difference.
Does the W-4 change my Social Security and Medicare withholding?
No. The W-4 only controls federal income tax withholding. Social Security (6.2%) and Medicare (1.45%) are fixed percentages of your pay that the W-4 can’t change, which is why this calculator focuses on the federal income tax piece.
How accurate is this W-4 estimator?
It uses the 2026 IRS Publication 15-T percentage method, so the per-paycheck withholding matches standard payroll closely. The IRS cautions that withholding worksheets don’t cover every situation — self-employment or large investment income, part-year work, and other credits can shift your actual tax. For a blank slate, enter your real pay-stub withholding in the optional field for a precise figure.
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