W-4 Impact Simulator — Visualize Withholding Changes

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Unlock W-4 Advanced Features

Step 2(c) is locked in Basic mode. Most married filers don't need to check it, but if you're not sure, you can read the Step 2(c) guide or upgrade to the Advanced W-4 Simulator for personalized guidance.

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Need help with Step 2(c)? Read the Step 2(c) guide

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Are you an International Student or Nonresident Alien?

This calculator is for US Residents only. NRAs have special IRS rules (e.g., cannot claim Standard Deduction, must select Single).Use the NRA Tax Wizard instead.

Reference tool for payroll scenarios.

For documented determinations that fit your onboarding cycle (pre-hire, first payment, mid-year changes), use the Compliance Engines.

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Payroll Inputs

Gross Pay (Per Paycheck)

Pay Frequency

Step 1: StatusForm W-4 (2026)

Single or Married filing separatelyMarried filing jointly or Qualifying surviving spouseHead of household

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Step 2: Multiple Jobs or Spouse Works

Step 2(c): Check this box if there are only two jobs total.

(This effectively standardizes benefits between the two jobs, usually resulting in higher withholding to prevent underpayment).

Step 3: Claim Dependents

Total Credits Amount ($)

Multiply children < 17 by $2,000, others by $500.

Step 4: Other Adjustments

4(a): Other Income (Annual)

4(b): Deductions (Annual)

4(c): Extra Withholding (Per Pay Period)

This amount is withheld in addition to standard tax.

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Estimated Paycheck Result

Net Pay (Take Home)

$2,442.69

Gross Pay$3000.00

Federal Income Tax-$327.81

FICA (SS & Med) (Est. 7.65%)-$229.50

TaxesNet Pay

Why did my pay change?

Adding $0 in Step 3 reduces your annual tax bill directly. Adding $0 in Step 4(c) increases withholding per check.

W-4 Simulation Compliance Record