With regard to church taxes, these only apply if you declare on your tax form that you are a member of either of the two official Swiss churches, Catholic and Reformed (ie protestant). Catholics pay more tax than protestants and the amount varies from community to community, but is usually in the range of 2 - 8% of taxable income.

Thus you can be a member of any one (or all) the dozens of Christian churches that are not recognised and not pay church tax. (Like Mormons, Seventh Day Adventist, JWs etc). I mean you wouldn't want to finance the competition, would you?