in addition to road tax you will have one time car registration fee of about 120chf and vignette will be 100chf per year
also your community will charge for fire department duty which is a few hundred a year depending on the community.
you also need to pay for the thrash bags which are about 20chf - 40 chf per month
Most likely you will use public transport because switzerland is not car friendly and therefore you might purchase a half off pass for the trains which is 150chf per year plus the train ticket abo price of which you can research on sbb.ch
also budget for some speeding fines because the swiss are very good with the hidden photo radars. 100 to 300 per fine. You will be flashed for simple infractions like switching lanes and driving over the continuous white line right at the traffic light (100chf fine)
one time car parking in the city while shopping is at lest 5 to 15 franks plus 40chf if you are fined.
one meal out at McDonald's with the family will cost you about 50chf.
YOUR CONTRIBUTION TO PUBLIC SERVICE
Every household in Switzerland is legally obliged to pay the radio and television fee. Your fee contributes to the public service offered by radio and television broadcasting in Switzerland. Billag is about CHF 13.75 per month for radio and CHF 23.84 per month for a television (approximately CHF 450.08 per year)
there's more but a lot can be avoided if you think of like like a war on capitalism