15.10.202606:45:00UTC+00French HICP Turns Negative in September, Signaling Fresh Disinflation Pressures

France’s Harmonised Index of Consumer Prices (HICP) slipped into negative territory in September, underscoring renewed disinflation pressures in the euro area’s second-largest economy. Month-over-month, the French HICP fell by 0.3% in September 2026, a sharp reversal from the 0.4% gain recorded in the previous month.

The latest figures, updated on 15 October 2026, highlight a marked cooling in short-term price dynamics. While the previous reading reflected steady price growth compared with the month before, the September downturn points to weaker underlying demand or easing cost pressures, or a combination of both. On a month-over-month basis, the move from +0.4% to -0.3% will likely feed into broader eurozone inflation assessments and may influence expectations around future policy signals from European monetary authorities.

The comparison period is strictly month-on-month, meaning September’s negative print captures the change in prices versus August 2026, while the earlier 0.4% figure measured August’s prices against July. The swing into negative territory raises questions about the durability of inflation in France and will be closely watched by investors tracking the trajectory of European consumer prices.