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Background Notes

Insight Series

Focus on Fuel and Home Heating Costs March 2026

CSO insight series,

Introduction

The Consumer Price Index is designed to measure the change in the average level of prices (inclusive of all indirect taxes) paid for consumer goods and services by all private and institutional households in the country and by foreign tourists holidaying in Ireland.

The classification used in the CPI is based on a version of the European Classification of Individual Consumption by Purpose Adapted to the Needs of Harmonised Indices of Consumer Prices Version 2 (ECOICOP Ver. 2). The ECOICOP Ver. 2 classification breaks consumer expenditure into thirteen different divisions covering a comprehensive range of consumer goods and services.

Core CPI Background Notes

Details on data collection and CPI methodology can be found at CPI Background Notes.

Interactive Visualisation App

To calculate the percentage change in the CPI between two periods of time

Why you can Trust the CSO

Learn about our data and confidentiality safeguards, and the steps we take to produce statistics that can be trusted by all.