- 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
- Standardised Methodological Report
- File in the Inventory of Statistical Operations: 30138
Methodological documents
- Press release on the base change 2021
- Main characteristics CPI base 2021
- Methodology scanner data
- Content of the IPC Subclasses, Base 2021.
- Composition of the CPI Headings, Base 2021.
- Composition of the CPI Special Groups, Base 2021.
- Methodologies previous bases
- Base 2016. Methodology / Press release: Main characteristics of the CPI, Base 2016 / Classification ECOICOP and links with COICOP-IPC
- Base 2011. Methodology / Press release: Main characteristics of the CPI, Base 2011
- Base 2006. Methodology / Press release: Main characteristics of the CPI, Base 2006
- Base 2001. Methodology / The CPI-2001 system / Link Coefficients Base 1992-Base 2001