From Belgium, Switzerland, Spain or the United Kingdom

Deregistration from your commune's population register is the central act, alongside the special departure-year return. The national register and where your family lives weigh heavily.

Notifying the residents' registry, returning the permit and settling cantonal tax structure the exit. Keeping a home available in Switzerland is a risk factor.

Beyond the 183 days, the authorities look at the core of economic interests and the presumption tied to a resident spouse and minor children. Form 030 formalises the change of residence.

The statutory residence test combines day counts with ties (accommodation, family, work, prior presence). Split-year rules govern the year of departure.