Characteristics of OAT€is

The Government issued the first OAT indexed to the French consumer price index (OATi) on September 15, 1998. This was followed in October 2001 by the very first issue of an OAT indexed to the euro area consumer price index (OAT€i), the Harmonised Index of Consumer Prices (HICP).

Since then, AFT has issued inflation-indexed securities on a regular and transparent basis, thus creating two curves, one indexed to French inflation and the other to euro area inflation. Around 10% of AFT’s annual issuance programme comprises these securities, and this percentage may be even higher if there is sufficient demand (12% in 2008, 7.5% in 2009, 10.8% in 2010, 10.9% in 2011, 9.6% in 2012, 9.9% in 2013, and 10.2% in 2014). Since 2004, OATi and OAT€i auctions are held on a regular basis on the same day as auctions for medium-term OATs, but during a separate session (11.50am). OATi and OAT€i are designed for all types of investors looking to protect the purchasing power of their investments, improve their asset-liability management or diversify their investment portfolio. They are suitable for resident or nonresident institutional investors, e.g. insurance companies, pension and social welfare funds, asset managers, banks, etc, as well as private individuals.


They have a par value of €1 and the real coupon is calculated as a fixed percentage of the index-linked principal. It is established at the time of issue and remains fixed to maturity. The coupon is paid annually and calculated as follows: real coupon x par value x indexation coefficient. The indexation coefficient is equal to the daily inflation benchmark J divided by the basic benchmark. The daily benchmark is calculated on a linear basis between the HICP for the month M-3 and the HICP for the month M-2, and the basic benchmark is the daily benchmark used as the basis for calculating changes in the price index. The benchmark index is the HICP, the consumer price index excluding tobacco for the euro area published every month by Eurostat.

AFT calculates and publishes the daily inflation benchmarks and indexation coefficients on its website.

OAT redemption is based on the following formula: par value x indexation coefficient. If the daily inflation benchmark at maturity is lower than the basic benchmark, redemption at par is guaranteed.