Swiss insurance isn't hard, but it's different from what most expats are used to. The combination of strict deadlines, mandatory coverage, tax-deductible products, and private individual contracts creates many opportunities to make expensive mistakes — mistakes that can cost you hundreds or thousands of francs per year, or leave you dangerously underinsured.
Here are the ten we see most often, ordered by how much they typically cost. Fix any of these and you'll instantly be better off than 80% of expats.
1. Missing the 3-month KVG deadline
The mistake: Assuming you have plenty of time to sort out health insurance, then discovering after three months that your canton has auto-assigned you to a random insurer.
The cost:You'll likely end up with a more expensive insurer than you'd have chosen — and you're locked in until the next switch window (November 30).
The fix: Within your first month, use Priminfo.admin.ch to compare premiums. Sign up with your chosen provider — they'll backdate coverage to your arrival date automatically.
2. Double-paying for accident coverage
The mistake:Keeping accident coverage active on your KVG even though you're covered by UVG through your employer.
The cost: Around 7% of your monthly KVG premium — typically CHF 15–30/month wasted.
The fix: If you work 8+ hours/week for a Swiss employer, UVG already covers you for accidents. Email your KVG provider and ask them to remove accident coverage (Unfalldeckung ausschliessen). Takes two minutes, saves CHF 180–360 per year.
Add it back if you leave the job
3. Overpaying for KVG — wrong Franchise
The mistake: Sticking with the default CHF 300 Franchise because it feels safer, even if you rarely see a doctor.
The cost: Up to CHF 600/year in unnecessary premiums for healthy adults.
The fix:If you're generally healthy and your annual medical costs are below CHF 2,000, switch to a CHF 2,500 Franchise. You'll save CHF 400–600/year on premiums and pay out of pocket only if you need a lot of care. You can change your Franchise every year by November 30 for the following year.
4. Overpaying for KVG — wrong model
The mistake:Staying on the expensive "standard model" with free choice of doctor when a Telmed or Hausarzt model would save 12–20%.
The cost: CHF 40–100/month in unnecessary premiums.
The fix: Consider switching to a Telmed model (you call a 24/7 hotline first) or Hausarzt model (you pick one family doctor). Emergencies, pediatrics, gynecology, and ophthalmology are exempted, so the downsides are usually minimal.
5. Not having personal liability insurance
The mistake:Skipping personal liability because it's "optional."
The cost:Potentially hundreds of thousands of francs if you cause a serious accident. Plus, most landlords won't rent to you without it.
The fix:Get a CHF 5–10 million liability policy for CHF 5–15/month. It's the cheapest high-value insurance in Switzerland. See our personal liability guide.
6. Underinsuring household contents
The mistake: Guessing a low sum insured to save a few francs per month.
The cost:At claim time, Swiss insurers apply the pro-rata rule — if you insured for CHF 60,000 but your real replacement value was CHF 100,000, they'll pay only 60% of any claim.
The fix: Walk through each room and calculate actual replacement values for furniture, electronics, clothes, kitchen equipment, bikes. Most 3.5-room households end up between CHF 70,000 and CHF 100,000.
7. Skipping Pillar 3a
The mistake:Assuming Pillar 3a is only for retirement planning, then finding out it's fully tax-deductible.
The cost: CHF 1,500–3,000 per year in unnecessary income tax.
The fix:If you're taxed in Switzerland and have earned income, contribute up to CHF 7,056/year (2026 limit) to a Pillar 3a account. Deduct the full amount from your taxable income on your return (B-permit holders use a Tarifkorrektur). For a typical expat in Zurich earning CHF 100,000, this saves around CHF 1,800 in taxes per year.
Maxing out Pillar 3a is always worth it
8. Not filing a Tarifkorrektur as a B-permit holder
The mistake:Thinking that because source tax is deducted automatically, you can't claim deductions.
The cost: Hundreds to thousands of francs in refundable tax.
The fix: B-permit holders can file a source tax correction (Tarifkorrektur) each year — typically by March 31 of the following year — to claim back deductions for Pillar 3a, alimony, professional training, donations, childcare, and more. Contact your cantonal tax office for the form or use their online portal.
9. Buying insurance through the wrong channel
The mistake: Signing up online with the first insurer whose website you landed on — often the most expensive option.
The cost: Hundreds of francs per year across multiple policies.
The fix: Always compare multiple providers through a comparison site (Priminfo for KVG; Comparis or Bonus.ch for others) or a broker. Brokers are free to you — they earn a commission from the insurer — and they usually know which providers have the best service, not just the lowest price.
10. Not reviewing insurance annually
The mistake: Setting up insurance once, then never looking at it again.
The cost: Missed opportunities to save when premiums rise or your circumstances change. Potential underinsurance as your assets grow.
The fix: Set a reminder for early November each year. Review:
- Your KVG provider — compare premiums on Priminfo and switch if a better option exists (notice by November 30)
- Your Franchise — has your health situation changed?
- Your household contents sum insured — did you buy new furniture, electronics, a bike?
- Pillar 3a — did you max out the annual contribution?
- Your life situation — marriage, children, mortgage, car purchase all change insurance needs
Honorable mentions
A few more common pitfalls worth knowing about:
- Not having supplementary health insurance when young and healthy — once you develop a condition, insurers can refuse you. Apply early.
- Forgetting the 60-day cancellation right after a claim — both you and the insurer can terminate after any claim. Useful if service was poor.
- Not declaring valuables separately on household contents policies — jewelry and art above CHF 20,000 usually need to be listed individually.
- Keeping multi-year contracts on policies you'd switch — ask for 1-year contracts when you sign up, even if the multi-year option is slightly cheaper.
Next steps
If you're new to Switzerland, start with our Moving to Switzerland checklist. If you've been here a while and want to audit your current setup, take our free risk analysis — it takes 5 minutes and flags overcharges, coverage gaps, and missed tax deductions specific to your situation.