How to use the result
Use this page as a payroll planning tool. It is especially useful when you are deciding how much to contribute pre-tax, how much extra to withhold on Form W-4 Step 4(c), or how a raise might change take-home pay.
How this calculator works
- Convert annual pay and deductions into the per-paycheck figures tied to the selected pay frequency.
- Estimate federal withholding from annualized taxable wages, the standard deduction, and any dependent-credit input entered on the page.
- Calculate FICA separately using the Social Security wage base and Additional Medicare withholding rules.
Example scenario
A worker comparing benefit elections can use this page to see how higher pre-tax retirement or HSA contributions change taxable wages, federal withholding, FICA, and net pay on each check.
Direct sources for this page
Employer payroll tax rules and withholding background.
Federal withholding methods used in payroll systems.
Social Security wage-base limit.
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