CSS in canton Valais: twelve years of premiums
In canton Valais, the lowest CSS premium went from CHF 329.40 a month in 2015 to CHF 447.20 in 2026 — a rise of +35.8 %. The table below places it next to the canton's cheapest insurer, year by year.
| Year | This insurer | The cheapest | Gap |
|---|---|---|---|
| 2015 | CHF 329.40 | CHF 242.30 | CHF 87.10 |
| 2016 | CHF 336.60 | CHF 252.10 | CHF 84.50 |
| 2017 | CHF 349.20 | CHF 279.00 | CHF 70.20 |
| 2018 | CHF 365.40 | CHF 283.65 | CHF 81.75 |
| 2019 | CHF 381.60 | CHF 299.45 | CHF 82.15 |
| 2020 | CHF 387.90 | CHF 318.70 | CHF 69.20 |
| 2021 | CHF 363.00 | CHF 323.20 | CHF 39.80 |
| 2022 | CHF 357.00 | CHF 333.70 | CHF 23.30 |
| 2023 | CHF 371.30 | CHF 338.70 | CHF 32.60 |
| 2024 | CHF 399.20 | CHF 365.90 | CHF 33.30 |
| 2025 | CHF 432.60 | CHF 395.80 | CHF 36.80 |
| 2026 | CHF 447.20 | CHF 406.30 | CHF 40.90 |
Faster or slower than the rest?
CSS rose +35.8 % over the period, against +67.7 % for the cheapest insurer in the same place. The gap narrowed — which does not mean this insurer is the cheapest today, only that it climbed more slowly.
The year that hurt — The steepest year-on-year jump was 2025: +8.4 % in one go.
Figures for an adult, CHF 300 deductible, accident cover included — the only profile defined identically across all twelve years. Each year this is the lowest premium the insurer offered, all models combined.
Valais, canton by canton
CSS, canton by canton
Other insurers
Source: Federal Office of Public Health (FOPH), premium files from 2015 to today.