1. Characterisation of tax residence
Three alternative criteria (French Tax Code art. 4 B) — a single one suffices to establish residence in France.
- Home or main place of stay — the family's habitual place of living
- Main professional activity — carried out in France on a principal basis
- Centre of economic interests — investments, income sources, wealth management
- Bilateral treaties resolve dual-residence conflicts (cascade: permanent home → centre of interests → habitual abode → nationality)