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Frontalier France–Switzerland

Your 2026 CMU frontalier contribution, computed

The 2026 contribution is computed on your revenu fiscal de référence (RFR) 2024 — the one on your 2025 avis d'imposition — not on this year's salary.

Formula: (RFR 2024 − allowance of 25% of the 2025 PASS, i.e. €11,775) × 8%.

Sources: URSSAF (8%, art. L380-3-2 CSS) · PASS 2025 (Légifrance) · verified on 18/08/2026 · Nothing is saved on this page.

Wondering whether CMU is the right regime at all? The choice between LAMal and CMU is a one-time, 3-month decision — see the LAMal vs CMU simulator and the droit d'option deadline calculator.

Beyond the number: your whole situation, analyzed

The Cross-Border pack (€29, one-time) runs the full picture: LAMal vs CMU on your household, family allowances with the Swiss differential, Geneva quasi-resident eligibility, and a personalized PDF analysis with your key dates.

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