On the basis of marriage this is possible either after 3 years of marriage if the foreign partner has lived in CH for at least 5 years OR after 6 years of marriage if both partners do not live in CH.
I am Swiss and Dutch.
My wife is Romanian.
We have been married for 5 years. We have lived in Romania during these five years and will move to Switzerland in January.
Would she fall under the 6 year rule, even if this is for people not living in Switzerland or under the 5-years-lived-in-Switzerland rule?
In the latter case it would still take another 5 years for my wife to apply for facilitated naturalisation. In the first case it would take only 1 year.
Timing for us is also important for another strange reason. After 5 years of marriage while living abroad my wife can apply for Dutch citizenship. However, one cannot become Dutch (or even apply for it) if one lives in the country of which one has the citizenship. This means she could not apply for Dutch citizenship while we lived in Romania and she will not be able to do so either once she obtained Swiss nationality because we will then be living there.
As I understood from various sites as well as EF postings, my wife will have to apply for a B permit once we are in Switzerland (which she can enter as a tourist for 3 months) and once she obtains this she will also be allowed to work (as wife of a Swiss).
Therefore Swiss nationality is not so urgent and we could go for getting the Dutch nationality first.
In my experience it can often be handy to be able to choose using an EU or a non-EU passport, so if it can be obtained for her, why not.
Does anyone have experience with facilitated naturalisation having switched between living outside of Switzerland and then in?