The mechanism: a temporary departmental option
The increase is neither automatic nor uniform: it requires a deliberation of the departmental council.
- Increase in the rate under Article 1594 D of the French Tax Code above 4.50%, up to a limit of 5%
- Application to deeds executed and agreements concluded from the effective date of the deliberation, at the earliest 1 April 2025
- Scheme limited in time: the increased rates cease, in principle, to apply to deeds executed after 31 March 2028
- Verification, matter by matter, of the rate in force in the department at the date of the deed