The decree for the splitting of communes issued by the State representative in the department only produces its effects for tax purposes from the following year if it is issued before 1st October of the year.
When the demerger order is issued after 30 September but no later than 15 April of the following year, the decisions relating to the rates to be set for the latter year in accordance with Article 1639 A must be the subject of concordant decisions by the municipal councils of the municipalities resulting from the split. Failing this, the taxes are collected in accordance with the decisions taken by the pre-existing municipality in respect of the previous year.