International Comparison of the CPI and RPI Formula Effect

An Office for National Statistics article investigates the formula effect, a key methodological difference causing divergence between the Consumer Prices Index (CPI) and Retail Prices Index (RPI). The analysis compares the magnitude of this effect in the UK with inflation measures from other countries. The dataset was last updated on 2026-07-08.

Use Cases

• Compare methodological differences in price index construction across countries based on the described formula effect.
• Analyze the historical divergence between CPI and RPI measures as mentioned in the description.
• Investigate factors explaining differences in the formula effect magnitude between the UK and other nations.

Strengths

• Produced by the Office for National Statistics, a designated National Statistics agency.
• Focuses on a specific, defined methodological difference (the formula effect) between two major inflation indices.
• Provides an international comparative perspective on inflation measurement.

Limitations

• Description metadata is limited; actual data quality requires manual inspection after download.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Office for National Statistics

Collection Method

Likely involves statistical analysis and compilation of international inflation data.

Freshness

Last updated 2026-07-08 13:30:57.034410; freshness should be verified.

Geography

International, with a focus on the United Kingdom.