CSS — Region 1, Basel-Landschaft: twelve years of premiums
Region 1, Basel-Landschaft: the lowest CSS premium went from CHF 376.00 a month in 2015 to CHF 559.10 in 2026 — a rise of +48.7 %. The table below places it next to this region's cheapest insurer, year by year.
| Year | This insurer | The cheapest | Gap |
|---|---|---|---|
| 2015 | CHF 376.00 | CHF 325.60 | CHF 50.40 |
| 2016 | CHF 409.20 | CHF 346.90 | CHF 62.30 |
| 2017 | CHF 440.70 | CHF 374.60 | CHF 66.10 |
| 2018 | CHF 452.40 | CHF 385.00 | CHF 67.40 |
| 2019 | CHF 457.80 | CHF 425.00 | CHF 32.80 |
| 2020 | CHF 471.80 | CHF 425.00 | CHF 46.80 |
| 2021 | CHF 468.40 | CHF 426.70 | CHF 41.70 |
| 2022 | CHF 459.00 | CHF 435.20 | CHF 23.80 |
| 2023 | CHF 477.10 | CHF 465.00 | CHF 12.10 |
| 2024 | CHF 510.60 | CHF 504.30 | CHF 6.30 |
| 2025 | CHF 546.80 | CHF 527.50 | CHF 19.30 |
| 2026 | CHF 559.10 | CHF 558.30 | CHF 0.80 |
Faster or slower than the rest?
CSS rose +48.7 % over the period, against +71.5 % 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 2016: +8.8 % 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.
CSS, canton by canton
Other insurers
Source: Federal Office of Public Health (FOPH), premium files from 2015 to today.