Notice Period Calculator Belgium

Enter when the contract started and when you actually hand over or send the notice. The tool calculates the legal notification date and the Monday on which notice starts.

Runs in your browser. Nothing you enter is uploaded.

From your letter date to the real start date

A notice period does not simply start on the day you write or hand over the letter. A hand-delivered employee notice and a bailiff notification take effect immediately. Registered mail takes effect on the third working day after posting; for this rule Saturday counts, while Sundays and statutory public holidays do not. The notice period itself starts on the Monday following the week in which notification takes effect.

An employer cannot validly dismiss with notice merely by handing the employee a letter; the employer must use registered mail or a bailiff.

2026 notice tables

The length calculation distinguishes the statutory 2026 contract-start regimes. Contracts started before 1 January 2014 are deliberately not guessed because transitional two-part rules apply.

Official notification/start rules · Employer notice table · Employee resignation table

Is my data uploaded?

No. The notice timeline is calculated in your browser, so nothing you add is sent to gratistools.be. See the privacy page for details.