The three-month rule — and what actually happens if you miss it.
Miss the three-month deadline without a valid excuse and your cover begins only on the day you enrol: treatment in the gap is yours to pay, and a premium surcharge applies for a limited period (Art. 5 KVG). If you never act, the canton assigns you an insurer (Art. 6 KVG). Enrol immediately — the gap only grows.
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In brief
Four deadlines drive the architecture. (1) 3-month registration from your cantonal Anmeldung (Art. 3 KVG, Art. 7 KVV) — enrol in time and cover and premiums run from your registration date; enrol late without a valid excuse and cover starts only on enrolment, the gap is unpaid, and a surcharge applies (Art. 5 KVG); never enrol and the canton assigns an insurer (Art. 6 KVG). (2) 30 November annual cancellation under Art. 7 KVG — the notice must reach the insurer by then. (3) Premium-notice right under Art. 7 §2 KVG — after a new-premium notice, one month's notice to the end of the month before the new premium applies. (4) Format — registered post, written notification, signed declaration; missing the format can invalidate an action even when the timing was right.
Two dates in autumn, each in writing.
To switch basic-insurance providers for the next calendar year, the cancellation must reach your current insurer by 30 November, by registered post.
Basic-insurance rules are federal law and identical at every insurer. Supplementary terms are contractual — read your policy's termination clause.
Every Swiss health-insurance deadline, in one table.
| What | Deadline | What happens |
|---|---|---|
| Register basic insurance (new arrival) | 3 months from your cantonal Anmeldung | On time, cover and premiums run from registration; late without a valid excuse, cover starts on enrolment with a surcharge (Art. 5 KVG); never enrolled, the canton assigns an insurer (Art. 6 KVG) |
| Switch basic insurer for 1 January | Notice by 30 November | Any insurer must accept you for basic (Art. 7 KVG) |
| Mid-year switch for 1 July | Notice by 31 March | Available on standard-franchise, free-choice-model policies |
| Premium increase announced | Per the extraordinary termination right (Art. 7 §2) | You may switch when your insurer changes the premium — check the notice period in the announcement letter |
| Cancel supplementary (VVG) | Per contract — commonly 3 months before year-end | Medically underwritten: never cancel before the replacement policy is confirmed in writing |
Basic-insurance rules are federal law and identical at every insurer. Supplementary terms are contractual — read your policy's termination clause.
Deadlines — what to do, when.
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Day 0–90 · Register basic insurance under Art. 3 KVG
From the day you register with your commune (Anmeldung), you have 3 months to enrol in basic insurance (Art. 3 KVG, Art. 7 KVV). Enrol on time and cover — and premiums — run from your registration date. Miss the deadline without a valid excuse and cover begins only on the day you enrol: the gap is uninsured, and a premium surcharge applies for a limited period (Art. 5 KVG). If you never enrol, the canton can assign you an insurer (Art. 6 KVG) — usually not the one you would have chosen.
Tip Enrol by week 4 to avoid the year-end queue. Waiting until day 89 saves nothing: on time, premiums run from registration anyway.
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30 November · Annual cancellation deadline (Art. 7 KVG)
To switch basic-insurance providers for the next calendar year, the cancellation must reach your current insurer by 30 November, by registered post. Plus the new insurer's signed acceptance must be on hand before the cancellation triggers. Without acceptance, the cancellation can revert. The format matters: ordinary post or email isn't binding under federal law.
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After a premium notice · Switching right (Art. 7 §2 KVG)
Your insurer must announce a new premium at least two months ahead. You can then switch with one month's notice to the end of the month before the new premium applies — for a 1 January premium, the letter must reach the insurer by 30 November. This right is the legal basis of the November deadline, not a separate window. Format: registered post, written notification.
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Annual · Verify your premium-region tariff
When you move within or between cantons, notify your insurer in writing. The premium tariff updates from the move date forward. Insurers don't always retroactively adjust — verify the new tariff appears on the next invoice. We routinely catch wrong-region tariffs in place for over a year.
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Cancel and confirm in writing — always
Every cancellation, every model change, every supplementary contract change: by registered post or signed letter, with confirmation requested. Verbal confirmations don't bind under Swiss insurance law. Insurer staff are well-meaning but bind less authority than the policy department; written cancellation reaching the policy department is the only safe form.
Tip A signed PDF returned via the insurer's customer portal is also typically valid — check your specific insurer's accepted format. When uncertain, registered post is the gold standard.
What we catch every week.
Trap 01
The 3-month miss
New arrivals who let the three-month line pass without a valid excuse have cover only from the day they enrol — the gap is theirs to pay — plus a surcharge for a limited period (Art. 5 KVG). Those who never enrol are assigned an insurer by the canton (Art. 6 KVG). Enrol first; then we plan the switch at the next 30 November.
Trap 02
The 30 November plain-mail mistake
Households send cancellations by ordinary post or email. The federal-law-binding format under Art. 7 KVG is registered post — and the new-insurer acceptance must be on hand before cancellation triggers. Without acceptance, the cancellation can revert.
Trap 03
The Art. 7 §2 missed lever
Premium increase notices arrive in October. Each notice gives you the right to switch by 30 November (Art. 7 §2 KVG) — many households let it pass.
Trap 04
The address-change silence
Households move address within Switzerland, notify the insurer of the address but not the cantonal/region change, and pay the wrong tariff for months. Silence creates the wrong-tariff drift.
These four are specific to this topic. The four we check in every review — from the age-curve trap to the 3-month deadline — are in the four traps deep-dive.
A real-pattern case.
Anonymised pattern
A British couple in Zürich received a +6.8% premium notice in October. They'd missed the previous year's 30 November deadline because they'd been travelling, and assumed they were locked in. Without the extraordinary-right knowledge, they would have accepted the increase. Art. 7 §2 KVG gave the new premium notice its own switching right — one month's notice to the end of December, so by 30 November. We helped them file the cancellation by registered post, with new-insurer acceptance secured first. Annual saving on the basic side: ~CHF 720 per adult, ~CHF 1,440 household. The lever wouldn't have appeared without knowing the mid-year extraordinary right exists.
Aggregated from real client patterns. Names anonymised; figures illustrative.
Beyond this guide — the 45-minute review.
The 45-minute review with Robert walks the deadline calendar against your specific situation: where you are in the 3-month registration window, whether the November switch is right, address-tariff verification on any recent move. The review also drafts the registered-post cancellation correctly — the format mistakes are common.
Robert Kolar
Insurance advisor — health insurance specialist
20+ years in Swiss insurance. Reads the basic and supplementary contract for every review. The 45-minute review covers the four-lever framework applied to your address, age, household and existing coverage. German, English, Czech.
Common mistakes.
Cancelling by ordinary post or email
The federal-law format under Art. 7 KVG is registered post. Other formats may not bind, and the cancellation can revert if challenged.
Cancelling without new-insurer acceptance
If the new insurer hasn't yet signed acceptance, the old cancellation can revert. Get acceptance first; cancel second.
Missing the extraordinary right
Every premium notice opens the Art. 7 §2 KVG switching right, which runs to 30 November for a 1 January premium. Many households miss this lever.
Silent address moves
Moving within Switzerland means notifying your insurer. Silence creates wrong-region tariff drift.
Verbal confirmations from insurer staff
Phone confirmations don't bind under Swiss insurance law. Always written confirmation in policy-department channels.
Frequently asked — legal requirements + deadlines.
What is the Swiss health insurance registration deadline?
When is the annual Swiss health insurance cancellation deadline?
What is the extraordinary right of cancellation (Art. 7 §2 KVG)?
Do I have to use registered post to cancel my Swiss health insurance?
Can I switch insurers mid-year?
What happens if I miss the 3-month deadline for Swiss health insurance?
Is Swiss health insurance retroactive?
How much is the late registration surcharge?
Do I need to notify my insurer when I move?
Can my employer cancel my Swiss health insurance for me?
Deadlines, read properly.
We've been managing Swiss-insurance deadlines for expats since 2017. The 3-month registration window, the 30 November cancellation cycle, the Art. 7 §2 switching right, the address-change notification. Free, 45 minutes, in English, with Robert. We draft the registered-post cancellation correctly — the format mistakes cost reverted switches.
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