Work & pay

Gross Bonus Amount and Percentage Calculator

Find the bonus amount for an eligible salary and period, or work backwards to its percentage. Eligibility must be confirmed separately, and the gross result excludes payroll deductions.

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Your numbers

€
%
1 means the full period; 0.5 means half.
€
Your figures stay on this device.

How the calculation works

The bonus calculation connects an eligible salary, a percentage and the eligible fraction of the award period. It can also work backwards from a known gross bonus to identify the percentage applied to that eligible base.

Gross bonus = eligible salary × percentage ÷ 100 × eligible fraction. In reverse mode, bonus percentage = gross bonus ÷ (eligible salary × eligibility fraction) × 100.
  1. Identify the eligible base

    Multiply eligible salary by the declared period fraction. This keeps the salary reference and the proportion of the qualifying period separate.

  2. Calculate the chosen unknown

    For an amount, multiply the eligible base by the percentage divided by one hundred. For a percentage, divide the gross bonus by that base and multiply by one hundred.

  3. Read the gross result

    The output is the award amount or its implied contractual percentage before payroll deductions. It does not convert the award to money received in a payslip.

Worked example: Full year

Sample inputs demonstrate the method. They are not a forecast or product offer.

The first example has €50,000 eligible salary, a 10% award and a full-period fraction of one. The eligible base stays €50,000; multiplying it by 0.10 produces a €5,000 gross bonus before any payroll deductions.

Find
Gross bonus amount
Eligible salary (€)
50000
Bonus percentage (%)
10
Eligible fraction of the period
1

Expected result

Gross bonus
€5,000.00
Worked example: Half year

Sample inputs demonstrate the method. They are not a forecast or product offer.

Find
Gross bonus amount
Eligible salary (€)
40000
Bonus percentage (%)
5
Eligible fraction of the period
0.5

Expected result

Gross bonus
€1,000.00

Understanding your result

A reduced period fraction lowers the amount at a fixed percentage. In reverse mode, the same award against a smaller eligible base implies a higher percentage.

The calculation describes the inputs rather than establishing an entitlement. Performance discretion, qualifying service and the actual tax treatment must be checked separately.

Questions you might have

What does this bonus percentage calculator include?

Find a gross bonus from an eligible salary and rate, or work backwards from a bonus amount to its percentage.

Which assumptions should I check?

This is gross contractual bonus arithmetic. Tax deductions, performance discretion and bonus eligibility are not inferred.

Choosing the right inputs

Eligible salary
Use the salary amount on which the agreement bases the bonus. Exclude pay components that the agreement does not count; the calculator cannot determine eligibility.
Eligible fraction of the period
Enter a fraction from zero to one: one represents the full period and 0.5 half. Reverse percentage mode requires a positive fraction and positive eligible salary.
Find
Choose gross amount when the percentage is known, or percentage when the gross bonus amount is known. Only the relevant percentage or amount input is used.

Common mistakes to avoid

  • Do not pro-rate salary first and then apply the same eligibility fraction again.
  • A net bonus received after deductions cannot be used as a gross bonus without changing the implied percentage.

Assumptions to check

  • This is gross contractual bonus arithmetic. Tax deductions, performance discretion and bonus eligibility are not inferred.

Sources and method

Read our calculation and testing approach.