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Changes in the classification of goods and services in the consumer price index
This Guide recommends methods and practices for implementing changes in the classification of goods and services in the Consumer Price Index (CPI). It complements the CPI Manual by presenting detailed guidance and examples of good practices for implementing classification changes.
Released:
28th April 2025
Authors:
CPI Steering Group
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References
Expert Group on Consumer Price Indices. https://unece.org/expert-group-consumer-price-indices
Hoffmann, E., M. Chamie (1999): Standard Statistical Classifications: Basic Principles. Paper for the United Nations Statistical Commission, thirtieth session, 1999. Available on https://unstats.un.org/unsd/classifications/bestpractices/basicprinciples_1999.pdf
ILO, IMF, Eurostat, OECD, UNECE, World Bank (2020): Consumer Price Index Manual: Concepts and Methods. Available on https://www.imf.org/en/Data/Statistics/cpi-manual
Ottawa Group on Price Statistics. https://stats.unece.org/ottawagroup/
United Nations Statistics Division (2018): Classification of Individual Consumption According to Purpose (COICOP) 2018. Available on https://unstats.un.org/unsd/classifications/econ/