Article 63 of the law of May 17th, 2011 (Law 2011-525) established the Tertiary Activities Rent Index. Decree n°2011-2028 of December 29, 2011 set out the firms concerned and the procedures for calculating and publishing the index.

The Tertiary Activities Rent Index (TARI) is used for indexation of the professional leases, concerning the activities other than commercial.

Since the Act 2014-626 of 18 June 2014 (Article 9) which amends the former act and the article L145-34 of the Commercial Code resulting two indices can be used for the revision of commercial property leases:

• The Commercial Lease Index (ILC) for commercial and craft activities;

• The Tertiary Activities Rent Index (TARI) for tertiary activities other than commercial which are carried on in business premises, including in particular professions and activities in logistics warehouses.

This index is calculated for the first time in 2011.

Computation of rent reference indices