CSS or Assura-Basis in Region 1 of canton Zurich?
In Region 1, Assura-Basis is CHF 93.60 a year cheaper than CSS for an adult on the same profile. Here is the detail — and what a third insurer would do.
The verdict, in this region
Assura-Basis comes down to CHF 522.80 a month, CSS to CHF 530.60. The gap is CHF 93.60 a year, 300-franc deductible, accident cover included.
What the question hides
Neither is the cheapest here: that is Atupri, at CHF 517.70 a month. Moving there rather than to Assura-Basis is worth CHF 61.20 more a year. Atupri
Where they stand in the region
CSS ranks 4 and Assura-Basis ranks 2, out of 27 active insurers in this region.
Deductible by deductible
With free choice of doctor, the one model every insurer offers — and therefore the only one where a row-by-row comparison compares the same thing.
| Deductible | CSS | Assura-Basis | Gap |
|---|---|---|---|
| 300 | CHF 651.00 | CHF 629.80 | + 21.20 |
| 500 | CHF 639.40 | CHF 618.20 | + 21.20 |
| 1'000 | CHF 610.20 | CHF 589.00 | + 21.20 |
| 1'500 | CHF 581.00 | CHF 559.80 | + 21.20 |
| 2'000 | CHF 551.90 | CHF 530.70 | + 21.20 |
| 2'500 | CHF 522.70 | CHF 501.50 | + 21.20 |
Model by model
Each insurer’s lowest rate in each model type, 300-franc deductible.
| Model | CSS | Assura-Basis |
|---|---|---|
| Family doctor | CHF 530.60 | CHF 522.80 |
| Other model | CHF 592.40 | — |
| Free choice of doctor | CHF 651.00 | CHF 629.80 |
How they moved in this region
Against 2025, CSS moves by + 0.4 % and Assura-Basis by + 4.9 % in this region.
Source: Federal Office of Public Health (FOPH), official premiums.