Quote from Big:
Second possibility :
Before you even move there, you negociate with the cantonal tax authorities a fix-rate deal. They will want to know you have some money available (not millions, but they will want to know you can sustain yourself).
Your tax will be essentially indexed on your rent (or an estimation of your rent if you are owner), essentially they will count that your rent is 1/5th or your income (which it usually is for most people), so rent*5*12 should be your annual income, so you will be paying tax on that (depending on the canton, that could be low). If you make 10 times that amount, they will not care one little bit.
Pros :
Really low taxes, especially if you are winning big, and/or living in a modest home.
You don't even file a tax return, you just pay the fix amount you negociated.
Cons :
You are not allowed to work in switzerland (although one would think it could be difficult to prove that you are not working)
You have to live in switzerland for more than 6 month per year (although this is not a con for me at all).
Best thing I would advise, setup a quick mini Hedge fund in the Seychelles, bank account in Lichtenstein, fully anonymous, you tell the authorities you have money in a fund, and it makes you a living, you trade your account either from home (but pretending you don't work) or you trade your account from somewhere else during 5 months and 29 days, and then you enjoy 6 months skiing holidays (or summer lakeside pool).