Studio PonchioSTPTools · Indexes and tables
ISTAT FOI index: the variations for rents and revaluations.
The Italian FOI index (consumer prices for blue- and white-collar households, net of tobacco) is the reference for updating lease rents, maintenance allowances and many contractual revaluations. From 1 January 2026 the reference base is 2025=100.
| Month | Annual FOI variation | 75% (leases) |
|---|---|---|
| September 2026 (index 104.3) | +4.0% | +3.0% |
| August 2026 (index 103.7) | +3.4% | +2.55% |
| July 2026 (index 103.1) | +2.8% | +2.1% |
| June 2026 | +2.9% | +2.175% |
| May 2026 | +3.0% | +2.25% |
| April 2026 | +2.6% | +1.95% |
HOW IT WORKS
A €1,000 rent with 75% ISTAT indexation on September 2026: 1,000 × 4.0% × 0.75 = €30.00 increase, updated rent €1,030.00. Whether 75% or 100% applies depends on the contract and the lease regime.
A €1,000 rent with 75% ISTAT indexation on September 2026: 1,000 × 4.0% × 0.75 = €30.00 increase, updated rent €1,030.00. Whether 75% or 100% applies depends on the contract and the lease regime.
ISTAT data; latest available month: September 2026 (final). Table updated monthly by the Studio; official revaluations follow the ISTAT publication in the Gazzetta Ufficiale.