Will your Swiss citizenship application pass?

A C permit when you apply. With a B permit you cannot apply on the ordinary route, even after ten years, unless you are married to a Swiss citizen.

Ten years of residence on a B, C or Ci permit, three of them in the five years before you apply. Years between your 8th and 18th birthday count double, with at least six actual years. Time on an F permit counts half; L, N, G and S do not count.

Spoken French, German or Italian at level B1 and written at level A2, proved by a certificate, a diploma, five years of compulsory school or your mother tongue.

No social assistance in the three years before you apply or during the procedure, unless you have repaid it in full.

No conviction that bars naturalisation, and no criminal case in progress.

Married to a Swiss citizen and living together in Switzerland: five years of residence including the last year, and three years of marriage. A B permit is enough.

Your canton adds its own residence period, between two and five years, often a knowledge test, and its own fees. In Geneva, Vaud and Zurich it is two years; Geneva charges CHF 1,250 for one adult, Zurich CHF 500, on top of the federal CHF 100.