The Sécu only reimburses about 70 % of care. The rest (ticket modérateur), extra fees, dental, optical and hearing are covered by the mutuelle. The difference is huge on big items (implants, orthodontics, glasses, hospitalisation). Without it, the out-of-pocket cost is heavy.
employee vs individual.
Employee — company mutuelle mandatory, the employer pays at least 50 % (family option).
Student, freelancer, unemployed — an individual mutuelle, about 20 to 60 €/month (by cover and age).
low income: the CSS.
The Complémentaire santé solidaire (CSS) — free or a few euros/month. Check your eligibility and apply on ameli/CAF; not applying when eligible means losing money.
the 100 % Santé.
Some dental prostheses, glasses and hearing aids have zero out-of-pocket cost (with most "responsible" mutuelles).
how to choose.
Compare the garanties table: GP, specialist, dental, optical, hospitalisation, extra fees (100 %, 200 %, 300 %…).
Dental or vision issues? Pick high dental/optical caps.
Check the waiting periods and cancellation terms. After 1 year, cancel anytime (infra-annuelle).
Use comparators/brokers; if it's complex, go through Expert services.
tips.
If you have a company mutuelle, avoid double coverage.
Dental/optical planned? Aim for high caps in advance.
Keep invoices and statements.
common mistakes.
Staying without a mutuelle and paying big items full price.
Subscribing without reading the garanties.
Being CSS-eligible and not applying.
FAQ.
Is it essential?
Almost: the Sécu alone leaves a big out-of-pocket share.
And employees?
Company mutuelle mandatory, half paid by the employer.
Low income?
The CSS, free or very cheap.
Dental and optical?
The 100 % Santé offers zero-out-of-pocket equipment.