The finance minister recently made waves by stating that no benefit in kind need be applied for a mobile phone provided to employees as long as the latter pay the costs related to personal use. These costs could be established with a system of split billing or by setting a realistic amount.

Links:
Only available in FR – Outils IT : les nouveaux forfaits confirmés au niveau social…mais incertitude en cas de split billing (Group S)


Source: http://www.hralert.be/fr/news/usage-prive-du-gsm-de-societe-pas-d%E2%80%99office-impose (HR Alert)