How long do I have after moving to Switzerland?
Three months from the date you move in. Cover then applies retroactively from your first day in Switzerland – so you pay the premiums for those months afterwards. Someone who registers in early March after moving in January receives three premium invoices at once.
If you let the deadline pass, your municipality of residence assigns you to an insurer. You then have no say over the insurer or the model, and the assigned solution is as a rule more expensive than one you choose yourself. The municipality may also levy a surcharge.
The same deadline applies to newborns, counting from birth. If the child is registered in time, cover starts on the first day of life. With late registration the insurer may require a health check for supplementary insurance – but not for basic insurance.
In practice this means: see to it early, but without rushing. You can compare insurers calmly and join retroactively – cover exists from day one anyway. Anyone who obtains a quote before moving usually has the registration done on the first day and need not worry about back payments.