How it works
This models separately identified supplemental wages when the federal percentage method is permitted. It applies 22% through $1 million annual supplemental wages and 37% to excess wages. FICA uses your prior taxable wages. State bonus withholding and other levies are manual, except Florida wage income tax is zero.
Example
$1,000 bonus with no prior wages produces $220 federal, $62 Social Security and $14.50 Medicare, leaving $703.50 before state withholding.
Questions about this tool
Is supplemental withholding my final bonus tax?
No. This tool models a permitted separate-payment withholding method. Your final income tax depends on your complete return, and state withholding is entered manually except for Florida.
Are these results independently verified?
No. Results and documents use the information you enter. Review the inputs and keep the underlying records.
Methodology sources
Tax year 2026. Sources reviewed September 19, 2026.