INEbase / Standard of living and living conditions (CPI) /Consumer price and housing indices /Consumer Price Index / Methodology

Type of survey: monthly continuous survey
Base period: 2021
Weight reference period: previous year
Sample of municipalities: 177
Number of items: 462 of traditional collection and 493 of scanner data
Number of observations: approximately 210,000 prices of traditional collection
Classification: 12 groups, 41 subgroups, 92 classes and 199 subclasses; 56 headings and 29 special aggregates
General calculation method: Laspeyres chain index
Collection method: personal visits to outlets, e-mail, telephone and internet and scanner data

Methodological documents

Consumer Price Index. Methodology