Belgium Resignation Notice Calculator (Préavis de démission)
How much notice must you give when you resign in Belgium? From 1 to 13 weeks by seniority, with the date your job ends; new rule for contracts from August 2026.
The notice is given by registered letter or a bailiff's writ, or by handing over a signed letter, and starts on the following Monday. If you find a new job during a dismissal notice, you can leave with a shorter counter-notice.
What it does
An employee who resigns in Belgium gives notice by seniority: 1 week in the first 3 months, 2 weeks up to 6 months, 3 weeks up to a year, 4 up to 18 months, 5 up to 2 years, 6 up to 4 years, 7 up to 5 years, 9 up to 6 years, 10 up to 7 years, 12 up to 8 years and at most 13 weeks after that. For contracts starting from 1 August 2026 the notice is 1 week during the first 6 months.
How to use it
- Type the start of employment.
- Type the day you give notice.
- Read the notice period and your last day.
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 notice after 5 years and 10 months?
9 weeks: given on 14 January 2026, the job ends on 22 March.
What is the maximum notice for a resignation?
13 weeks, from 8 years of seniority.
Can I leave earlier?
Only if the employer agrees to end the contract by mutual consent, or by paying the employer an indemnity for the weeks not worked.
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