About US domiciled ETFs for non-US persons, you can read this vey helpful article and explanation, then look into the table for specific countries of residence. Hint, you will find for Switzerland as neither to “avoid” nor “prefer”. Neutrality in its glory, I guess
Nonresident alien’s ETF domicile decision table
This is a deeply complicated matter where your physical residence doesnot matter as much as your fiscal residence does, and that last one, gets even more complicated as sometimes it also depends on which country you
re a national of. For example, there are countries (the US is notoriously known for this, but also some in the EU) where have you been a national you continue being liable for *parts* of your global earned income even if youre permanently working and living in another county. On the other hand, there are others, where as long as you moved out permanently, the taxman forgets all about you.
You will have to take into account where you come from, where you are now and where you will be and sort what applies/shall apply to you.
Trivial sidenote for the “land of the free”… I have a vague impression–maybe am wrong here-- that even if one renounces citizenship, Uncle Sam still collects. Or something.