Ireland’s Harmonised Index of Consumer Prices (HICP) climbed to 3.9% year-over-year in September 2026, up from 3.1% in August, according to data updated on 1 October 2026. The figures are based on a year-over-year comparison, measuring price changes in September 2026 against the same month a year earlier, with the previous reading comparing August 2026 to August a year earlier.
The acceleration in the HICP suggests inflationary pressures in Ireland picked up as autumn began, reversing the slower pace recorded in August. While the data do not detail specific categories behind the rise, the headline move from 3.1% to 3.9% indicates a broadening or strengthening of price increases across the consumer basket as captured by the harmonised index.
This latest print will likely be watched closely by market participants and policymakers, as the HICP is the key inflation gauge harmonised across the European Union and used for cross-country comparisons. The higher September reading may influence expectations around the inflation trajectory in Ireland and, by extension, its position within the wider euro area price environment.