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COVID-19 inflation weights in the UK and Germany

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  • Grigoli, Francesco
  • Pugacheva, Evgenia

Abstract

The COVID-19 pandemic altered consumption patterns significantly in a short period of time. However, official inflation statistics take time to reflect changes in the weights of the CPI consumption basket. Using credit card data for the UK and Germany, we document how consumption patterns changed and quantify the resulting inflation bias. We find that consumers experienced a higher level of inflation at the beginning of the pandemic than what a fixed-weight inflation (or the official-weight) index suggests and lower inflation thereafter. We also show that weights can differ among age groups and in-person vs. online spenders. These differences affect the purchasing power of the population heterogeneously. We conclude that CPI inflation indexes based on frequently updated weights can provide useful inputs to assess changes in the cost of living, including across segments of the population. If shifts in consumption patterns prove persistent, these indexes can help determine the need to introduce new weights and inform monetary policy and the design of support policies for the more vulnerable.

Suggested Citation

  • Grigoli, Francesco & Pugacheva, Evgenia, 2024. "COVID-19 inflation weights in the UK and Germany," Journal of Macroeconomics, Elsevier, vol. 79(C).
  • Handle: RePEc:eee:jmacro:v:79:y:2024:i:c:s0164070423000435
    DOI: 10.1016/j.jmacro.2023.103543
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    References listed on IDEAS

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    More about this item

    Keywords

    Consumer behavior; Consumer price index; COVID-19; Inflation; Weights;
    All these keywords.

    JEL classification:

    • C43 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods: Special Topics - - - Index Numbers and Aggregation
    • E21 - Macroeconomics and Monetary Economics - - Consumption, Saving, Production, Employment, and Investment - - - Consumption; Saving; Wealth
    • E31 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Price Level; Inflation; Deflation
    • L81 - Industrial Organization - - Industry Studies: Services - - - Retail and Wholesale Trade; e-Commerce

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