Belgium End-of-Year Bonus Calculator (Prime de fin d'année)
Calculate the end-of-year bonus in Belgium pro rata: one month's gross salary for a full year, reduced for each month not worked; rules depend on your CP.
The bonus is set by the joint committee (CP) or the contract. In CP 200 it equals one monthly salary, with conditions on seniority and on leaving; dismissal for serious cause loses it. Social contributions and tax are withheld.
What it does
Most Belgian employees receive an end-of-year bonus, often called the 13th month, in December. It is not set by law but by the collective agreement of the joint committee (commission paritaire) or the contract, and usually equals one gross monthly salary for a full year, pro rata for those who joined or left during the year.
How to use it
- Type your monthly gross salary.
- Type the months worked this year.
- Read the bonus due.
The arithmetic runs in your browser. Nothing you type is sent anywhere and nothing is stored, so you can use these with real numbers.
Frequently asked questions
How much bonus after 7 months at €3,500?
3,500 × 7 ÷ 12 = €2,041.67 gross.
Is the end-of-year bonus mandatory?
Only if your joint committee or contract provides it; most do.
When is it paid?
Usually with the December salary, or when the contract ends.
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