In March 2018, the Consumer Prices Index (CPI) increased by 1.0% over one month, after a stability in February. This rise came from a rebound in "manufactured product" prices after the end of winter sales (+2.1% after −0.3%) and in food prices (+0.4% after −0.1%). Furthermore, tobacco prices rose markedly (+13.2%) and those of services accelerated over one month (+0.4% after +0.1% in February). On the other hand, energy prices sharply fell back (−0.7%) in the wake of petroleum product prices.

Seasonally adjusted, consumer prices recovered by +0.5%, after a 0.3% downturn in February.

Year on year, consumer prices sharply accelerated in March 2018: +1.6% after +1.2%. This increase in the year-on-year inflation resulted from a sharper rise in prices of services, food and tobacco. On the other hand, energy prices slightly slowed down and those of "manufactured product" fell back.