Rent indexation in Flanders

In Flanders the rent may be indexed once a year from the anniversary of the date the lease took effect, unless the lease expressly excludes it, and only after a written request or notice from the landlord. Unlike Brussels and Wallonia, the starting index (aanvangsindexcijfer) is the health index of the month before the lease took effect, not the month before it was signed. The new index is in principle that of the month before the anniversary; the Flemish government adds that when the request comes later, the health index at the time of the written notice applies, with arrears limited to three months. For homes on the private market let as a main residence, with an EPC label D, E or F or no valid EPC, and a lease in force before 1 October 2022, the fully indexed rent must be multiplied by a correction factor (correctiefactor) that depends on the anniversary month: for November, 0.945356 for label D and 0.890713 for E, F or no EPC. The factor applies to every indexation until a better EPC or a new lease.