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A New Reason to Hate Grocery Inflation: Measuring and Interpreting Inflation Heterogeneity

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Abstract

The 2021-2022 inflation episode presented the first opportunity to examine inflation and price dispersion using U.S. scanner data in a high-inflation environment. Data from 50,000 outlets reveals that price changes across similar goods grew more dispersed in 2022 before falling again in 2023. This paper documents how price change dispersion interacts with households’ product choices to generate substantial inflation heterogeneity. Household-level inflation rates exhibit a 1.4 percentage point interquartile range in 2019, which grew to 4.0 percentage points in 2022 before falling back to 1.6 percentage points in 2023. Households offset little of their implied budget shocks through substitution. A model with idiosyncratic preferences rationalizes household behavior and implies that households’ inflation rates represent convenient, observable bounds on their welfare losses. When inflation peaked in 2022, households at the 10th and 90th percentiles of the inflation distribution and average grocery expenditures faced welfare losses of $573 and $1,145, respectively.

Suggested Citation

  • Kelsey O'Flaherty, 2026. "A New Reason to Hate Grocery Inflation: Measuring and Interpreting Inflation Heterogeneity," Finance and Economics Discussion Series 2026-001, Board of Governors of the Federal Reserve System (U.S.).
    • Handle: RePEc:fip:fedgfe:102371
    DOI: 10.17016/FEDS.2026.001
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    1. Xavier Jaravel, 2021. "Inflation Inequality: Measurement, Causes, and Policy Implications," Annual Review of Economics, Annual Reviews, vol. 13(1), pages 599-629, August.
    2. Alberto Cavallo & Oleksiy Kryvtsov, 2024. "Price Discounts and Cheapflation during the Post-Pandemic Inflation Surge," NBER Chapters, in: Inflation in the COVID Era and Beyond, National Bureau of Economic Research, Inc.
    3. Colin J. Hottman & Stephen J. Redding & David E. Weinstein, 2016. "Quantifying the Sources of Firm Heterogeneity," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 131(3), pages 1291-1364.
    4. Kaplan, Greg & Schulhofer-Wohl, Sam, 2017. "Inflation at the household level," Journal of Monetary Economics, Elsevier, vol. 91(C), pages 19-38.
    5. Fernando Alvarez & Martin Beraja & Martín Gonzalez-Rozada & Pablo Andrés Neumeyer, 2019. "From Hyperinflation to Stable Prices: Argentina’s Evidence on Menu Cost Models," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 134(1), pages 451-505.
    6. Robert J. Hill & Daniel Melser, 2008. "Hedonic Imputation And The Price Index Problem: An Application To Housing," Economic Inquiry, Western Economic Association International, vol. 46(4), pages 593-609, October.
    7. Bart Hobijn & David Lagakos, 2005. "Inflation Inequality In The United States," Review of Income and Wealth, International Association for Research in Income and Wealth, vol. 51(4), pages 581-606, December.
    8. Robert B. Barsky & F. Thomas Juster & Miles S. Kimball & Matthew D. Shapiro, 1997. "Preference Parameters and Behavioral Heterogeneity: An Experimental Approach in the Health and Retirement Study," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 112(2), pages 537-579.
    9. Diewert, W. E., 1976. "Exact and superlative index numbers," Journal of Econometrics, Elsevier, vol. 4(2), pages 115-145, May.
    10. repec:ifs:ifsewp:36 is not listed on IDEAS
    11. Dimitris Georgarakos & Kwang Hwan Kim & Oliver Coibion & Myungkyu Shim & Myunghwan Andrew Lee & Yuriy Gorodnichenko & Geoff Kenny & Seowoo Han & Michael Weber, 2025. "How Costly Are Business Cycle Volatility And Inflation? A Vox Populi Approach," Working papers 2025rwp-241, Yonsei University, Yonsei Economics Research Institute.
    12. McFadden, Daniel, 1974. "The measurement of urban travel demand," Journal of Public Economics, Elsevier, vol. 3(4), pages 303-328, November.
    13. Olena Kostyshyna & Maude Ouellet, 2024. "Household Food Inflation in Canada," Staff Working Papers 24-33, Bank of Canada.
    14. Deaton,Angus & Muellbauer,John, 1980. "Economics and Consumer Behavior," Cambridge Books, Cambridge University Press, number 9780521296762, November.
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    JEL classification:

    • D11 - Microeconomics - - Household Behavior - - - Consumer Economics: Theory
    • D12 - Microeconomics - - Household Behavior - - - Consumer Economics: Empirical Analysis
    • 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

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