Article R2333-109 of the French General Code of Local Authorities
L’état des redevances à percevoir en vertu des dispositions des articles R. 2333-105 to R. 2333-108 is established on 31 December of the year preceding the start of each annual collection period. The amount of the fee provided for in article R. 2333-105-1 may be adjusted during the collection period to take account of the commissioning actually carried out.