Hi there,
If you expect to have healthcare expenses of at least 1500 francs in a given year, then choosing the lowest possible deductible (300 francs) for your compulsory Swiss health insurance is generally the cheaper option.
In Switzerland, the costs associated with pregnancy and childbirth easily add up to several thousand francs. Assuming that most of your pregnancy-related healthcare is received within the same calendar year, switching to a 300-franc deductible could save you a lot of money.
On the other hand, if you expect to spend less than 1500 francs in a given year, then choosing a 2500-franc deductible makes more financial sense.
Best regards from Moneyguru
More on this topic:
Guide to choosing the right deductible
Deductibles explained
Swiss health insurance comparison