Rent and Indexation

What is rent?
Rent is the financial compensation paid by the tenant for the use of a property.
It represents the cost of occupying the unit.
The lease includes an indexation clause, which is applied every year on January 1st.

How is rent indexation calculated?
The rent adjustment is based on the INSEE Rent Reference Index (Indice de Référence des Loyers – IRL).
Your lease specifies the reference date of the index used for the annual revision.
If no date is indicated, the latest index published at the time of signing the lease is used.

Once you have the index values, simply apply this formula:
Base Rent × (New Index ÷ Old Index) = New Rent Amount