What tax year does this calculator use?

It uses projected 2026 federal tax brackets and standard deduction amounts, estimated from the most recently published IRS inflation adjustments. Official 2026 Publication 15-T figures may differ slightly once the IRS releases them; use this tool for planning, not for exact compliance.

How does this differ from IRS Publication 15-T?

Publication 15-T withholding tables build the standard deduction into the bracket structure differently for jobs with and without the Step 2 checkbox. This calculator uses a simplified equivalent: it subtracts the full standard deduction for a single job, or half the standard deduction when multiple jobs is checked, then applies annual tax brackets. Results are a close estimate, not the exact table lookup a payroll system uses.

What does the Step 2(c) multiple jobs checkbox do?

Checking it tells your employer to withhold at a higher rate because you (or your spouse) have more than one job. This calculator approximates that by halving the standard deduction applied, which raises taxable income and increases withholding per paycheck.

How are dependent credits calculated?

Step 3 of Form W-4 asks for an annual dollar credit: $2,000 for each qualifying child under 17 and $500 for each other dependent. This calculator computes that total automatically from the number of dependents you enter and subtracts it from the tentative annual tax.

Why might my actual paycheck withholding be different?

Actual payroll withholding depends on the exact IRS table your employer uses, rounding rules, pre-tax deductions (401(k), health insurance) that lower taxable wages, and any state or local withholding, none of which this federal-only estimator applies.

Should I use this instead of the IRS Tax Withholding Estimator?

Use this for a quick paycheck-level estimate. For a full-year reconciliation that accounts for your entire tax situation, the IRS Tax Withholding Estimator at irs.gov is more precise.

W-4 Withholding Calculator

Name: W-4 Withholding Calculator
Availability: InStock
Author: Nham Vu

Enter your filing status, pay frequency, gross pay, and Form W-4 Step 2-4 adjustments to estimate federal income tax withheld from each paycheck.

Form W-4 Details

Filing Status

Pay Frequency

Gross Pay Per Period

Step 2(c): Multiple jobs box is checked

Step 3: Children Under 17

Other Dependents

Step 4 (Optional)

4a: Other Annual Income

4b: Other Annual Deductions

4c: Extra Withholding Per Paycheck

Enter your gross pay to estimate withholding.

Estimated Withholding Per Paycheck

$0.00

federal income tax

Annual Withholding

$0.00

Effective Rate

0.0%

Taxable Income

$0.00

Step	Amount

Based on projected 2026 federal brackets and standard deduction. Federal income tax only; does not include Social Security, Medicare, state, or local withholding.

Summary

Enter your filing status, pay frequency, gross pay, and Form W-4 Step 2-4 adjustments to estimate federal income tax withheld from each paycheck.

How it works

Select your filing status and how often you get paid.
Enter your gross pay for one pay period.
Check the multiple jobs box if Step 2(c) is checked on your W-4.
Enter dependents from Step 3 and any Step 4 amounts (other income, deductions, extra withholding).
The calculator annualizes your pay, applies the standard deduction and tax brackets, subtracts dependent credits, then divides by your number of pay periods.
Read the estimated withholding per paycheck and for the full year in the results panel.

Use cases

Checking whether a new Form W-4 will withhold enough before submitting it to payroll.
Comparing withholding across weekly, biweekly, semimonthly, and monthly pay schedules.
Seeing the effect of checking the Step 2(c) multiple jobs box on take-home pay.
Estimating how claiming dependents in Step 3 reduces withholding per paycheck.
Testing how extra per-paycheck withholding (Step 4c) changes your year-end position.
Comparing single vs. head of household withholding after a filing status change.

Frequently Asked Questions

Last updated: 2026-07-25 · Reviewed by Nham Vu