No health insurance after 3 months in Switzerland: what happens?
After the 3-month deadline, cover only starts on the day you enrol, with no backdating, and a premium surcharge applies if the delay is not excusable. If you do not take out insurance at all, the canton enrols you automatically with an insurer it chooses.
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No cover for the period of delay
If you enrol late, the insurance only takes effect from the date you enrol. Care received before that date is not covered by basic insurance.
The premium surcharge
If the delay is not excusable, the insurer charges a surcharge:
- between 30 and 50% of the premium, set according to your financial situation;
- for twice the length of the delay, up to five years: a 4-month delay means 8 months of surcharge;
- less than 30% if paying it would cause you hardship;
- no surcharge when social assistance pays the premiums.
The surcharge follows you if you change insurer.
Automatic enrolment by the canton
The cantons make sure the insurance obligation is respected. If you did not take out insurance in time, the authority designated by the canton enrols you automatically: it chooses the insurer, not you.
How to avoid it
Take out insurance as soon as you arrive, without waiting for the end of the deadline: within 3 months, cover is backdated (Health insurance: start date). You are free to choose your insurer; compare premiums on priminfo.admin.ch, the official calculator. CheckSwiss does not recommend any insurer.
Check the formalities and deadlines that apply to you
CheckSwiss keeps only the formalities that apply to you, based on your canton, job, family and vehicle, and works out your deadlines.
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Frequently asked questions
How much is the premium surcharge?
Between 30 and 50% of the premium, depending on your financial situation, for twice the length of the delay, up to five years. It can be under 30% if paying it would cause you hardship.
Is care received during the delay reimbursed?
Not by basic insurance: if you enrol late, cover only starts on the date you enrol.
What happens if I never take out insurance?
The canton enrols you automatically with an insurer it chooses for you.
Is the surcharge always applied?
No: only if the delay is not excusable, and never when social assistance pays the premiums.
Sources
- Health Insurance Act, KVG/LAMal (SR 832.10), arts 3, 4, 5 and 6, as at 1 January 2026 · checked on 27 September 2026
- Health Insurance Ordinance, KVV/OAMal (SR 832.102), art. 8, as at 1 January 2026 · checked on 27 September 2026
- FOPH, Requirement to obtain insurance for persons resident in Switzerland · checked on 27 September 2026
- Priminfo, official premium calculator (FOPH) · checked on 27 September 2026