Free withholding (w-4) calculator
Enter your annual income, filing status, and pay frequency — this W-4 withholding calculator estimates your per-period federal withholding and the extra amount to enter on Step 4(c) to hit your target, updated live, as you type.
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Estimated only. Actual withholding depends on your W-4 elections, filing status, and local laws. Consult your payroll provider for exact figures.
Results are estimates. Consult a professional.
How the W-4 withholding calculator works
The W-4 withholding calculator estimates how much federal income tax your employer should withhold from each paycheck so you neither owe a large lump sum nor give the government an interest-free loan of your money. The goal is a target annual withholding that matches — as closely as possible — what you will actually owe when you file. You then compare that target against what your employer is already withholding, and enter any adjustment on Step 4(c) of your W-4.
Worked example: single filer adding extra withholding mid-year
Sam earns $72,000 from a W-2 job and started freelance work mid-year, expecting an additional $18,000 of net self-employment income for the full year. Sam's employer withholds $8,400 annually (based on the existing W-4). Sam files single with no dependents. It is now July 1 — 13 pay periods remain in the year (biweekly).
Estimated 2024 federal income tax by income and filing status
The table below shows approximate federal income tax for common income levels using the standard deduction and no credits, to help you estimate a withholding target. The standard deduction for 2024 is $14,600 (single / MFS) and $29,200 (MFJ).
| Gross income | Single (std. ded.) | MFJ (std. ded.) | HoH (std. ded.) |
|---|---|---|---|
| $40,000 | ~$2,918 | ~$0 | ~$1,550 |
| $60,000 | ~$6,218 | ~$3,318 | ~$4,718 |
| $80,000 | ~$10,294 | ~$6,218 | ~$8,494 |
| $100,000 | ~$14,994 | ~$10,294 | ~$13,194 |
| $120,000 | ~$20,094 | ~$14,994 | ~$18,294 |
| $150,000 | ~$27,294 | ~$21,294 | ~$25,494 |
| $200,000 | ~$42,094 | ~$34,294 | ~$40,294 |
Approximate 2024 federal income tax using standard deduction, no credits, standard brackets. Standard deduction: $14,600 single; $29,200 MFJ; $21,900 Head of Household. Source: IRS Rev. Proc. 2023-34.
Tips for getting your W-4 right
The 2020 W-4 redesign eliminated allowances. It now uses dollar amounts directly — which is more precise but requires more math. These tips help you fill it out accurately and avoid the most common withholding pitfalls.
- Update your W-4 after any major life event. Marriage, divorce, a new child, buying a home, taking a second job, or starting a side business all change your expected tax — and therefore the right withholding. A stale W-4 from years ago is the most common cause of unwanted tax bills.
- Use Step 2 if you have multiple jobs or a working spouse. The IRS withholding estimator at irs.gov/W4app is the most accurate way to handle this. Alternatively, check box 2(c) if both jobs pay roughly the same; it withholds at the higher single rate for both jobs.
- Claim the child tax credit in Step 3. Enter $2,000 per qualifying child under 17 and $500 per other dependent directly on the W-4. This reduces withholding to reflect credits you will claim at filing.
- Enter investment and freelance income in Step 4(a). If you have significant dividend, interest, rental, or self-employment income outside your W-2, enter it here so your employer withholds extra tax on it — avoiding quarterly estimated tax payments.
- Know the underpayment penalty rule. If you owe more than $1,000 at filing AND paid less than 90% of the current year's tax OR 100% of last year's tax (110% if your prior-year AGI exceeded $150,000), the IRS charges an underpayment penalty calculated at the federal short-term rate plus 3%.
Accuracy and limitations
This calculator estimates your target withholding based on 2024 tax brackets, the standard deduction, and the income and credits you enter. It does not calculate the Alternative Minimum Tax (AMT), the Net Investment Income Tax (NIIT), or state income tax withholding. If you have complex situations — significant AMT exposure, substantial capital gains, foreign income, or large itemized deductions — the IRS Tax Withholding Estimator at irs.gov/W4app will produce a more precise result.
The W-4 you submit to your employer is prospective — it affects future paychecks only. If you realize in November that you have been under-withheld all year, there are too few pay periods to correct it through the W-4 alone; an estimated tax payment on Form 1040-ES will close the gap faster and avoid the penalty.
W-4 withholding terms defined
About this W-4 withholding calculator
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