Bonus Calculator
Bonus is evaluated from Gross Bonus Amount, Annual Salary and State Income Tax Rate. The calculation reports Federal Income Tax Withheld, Social Security and Medicare.
Results
About the Bonus Calculator
The calculator uses a multi formula configuration. Each reported value is read as a direct evaluation of the stored rules with the declared field formats and units.
Formula basis:
Federal withholding = bonus x 22% (supplemental rate) or ~28% (aggregate)
SS = max(0, bonus up to remaining SS wage base) x 6.2%
Medicare = bonus x 1.45%
State = bonus x state rate
Net = gross - all withholdings
Interpret the outputs in the order shown by the result fields. Optional inputs affect only the outputs that depend on those variables.
Formula & How It Works
The calculation applies the following relations exactly as recorded in the metadata: Federal withholding = bonus x 22% (supplemental rate) or ~28% (aggregate) SS = max(0, bonus up to remaining SS wage base) x 6.2% Medicare = bonus x 1.45% State = bonus x state rate Net = gross - all withholdings Each output field is produced by substituting the supplied inputs into the relevant relation and then applying the declared rounding or text format.
Worked Examples
Example 1: Year-end bonus: $15,000 gross, California resident, $85k salary
Inputs
With Gross Bonus Amount = 15,000, Annual Salary = 85,000, State Income Tax Rate = 10.23 and Federal Withholding Method = Supplemental 22% flat rate as the stated inputs, the result is Federal Income Tax Withheld = $3,300, Social Security = $930 and Medicare = $218. Each value corresponds to the declared output fields.
Example 2: Sales commission bonus: $50,000, Texas resident, $120k base salary
Inputs
With Gross Bonus Amount = 50,000, Annual Salary = 120,000, State Income Tax Rate = 0 and Federal Withholding Method = Supplemental 22% flat rate as the stated inputs, the result is Federal Income Tax Withheld = $11,000, Social Security = $3,013 and Medicare = $725. Each value corresponds to the declared output fields.
Example 3: Holiday bonus: $2,500 at a small company, single employee in Georgia ($5% state rate)
Inputs
With Gross Bonus Amount = 2,500, Annual Salary = 42,000, State Income Tax Rate = 5 and Federal Withholding Method = Supplemental 22% flat rate as the stated inputs, the result is Federal Income Tax Withheld = $550, Social Security = $155 and Medicare = $36. Each value corresponds to the declared output fields.
Example 4: Executive bonus: $200,000 performance bonus, $350,000 base salary, New York
Inputs
With Gross Bonus Amount = 200,000, Annual Salary = 350,000, State Income Tax Rate = 9.62 and Federal Withholding Method = Supplemental 22% flat rate as the stated inputs, the result is Federal Income Tax Withheld = $44,000, Social Security = $0 and Medicare = $2,900. Each value corresponds to the declared output fields.
Common Use Cases
- Calculate net bonus after federal and state tax withholding
- Estimate how much of a bonus to expect after taxes
- Plan bonus spending or savings based on net amount