Common mistakes that make a cancellation fail

Mistake no. 1: sending too late

This is the most frequent reason for refusal. For basic insurance, your letter must be received by 30 November at the latest — not posted on that date. A letter sent on 29 November but received on 2 December is out of time. The postmark does not count: only receipt matters. Allow several days and prefer registered mail, which time-stamps receipt.

Mistake no. 2: the wrong address or an incomplete document

Many insured people send their cancellation to the general contact address when the fund requires a separate cancellation address. Check it before sending. On content, a missing insured number, signature or relevant branch (basic KVG/LAMal or supplementary VVG/LCA) is enough to delay — or reject — the request.

Always state: surname, first name, address, insured number, branch, desired effective date and signature. Make clear that you are cancelling, not merely 'switching'.

Mistake no. 3: no proof, or unpaid premiums

A plain email proves neither the signature nor the date of receipt: in a dispute, you have no recourse. Registered mail or an acknowledgement of receipt from the client portal removes that doubt. Always keep a copy of the letter and the proof of sending.

Another little-known trap: a cancellation is blocked while premiums or cost-sharing remain unpaid. Settle your arrears before starting the process, otherwise the fund can legitimately refuse your departure.

Mistake no. 4: cancelling the old fund too early

Never cancel before you have the written confirmation of membership from your new fund as of 1 January. The right sequence is: compare, sign the new one, then cancel the old one. That way you avoid any coverage gap — basic insurance being compulsory in Switzerland.