Targeted Price Controls on Supermarket Products

Alberto  Cavallo; Diego  Aparicio

Article | Review of Economics and Statistics | Forthcoming

Targeted Price Controls on Supermarket Products

Abstract

We study the impact of targeted price controls for supermarket products in Argentina from 2007 to 2015. Using web scraping, we collected daily prices for controlled and non-controlled goods and measured the differential effects on inflation, product availability, and price dispersion. We first show that, although price controls are imposed on goods with significant CPI weight, they have a temporary effect on aggregate inflation and no downward effect on other goods. Second, contrary to common beliefs, we find that controlled goods are consistently available for sale. Third, firms compensate for price controls by introducing new product varieties at higher prices. This behavior, which increases price dispersion within narrow categories, is consistent with a standard vertical differentiation model in the presence of price controls.

Keywords: prices; controls; price dispersion; Economics; Price; Cost Management; Goods and Commodities; Retail Industry; Argentina;

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Cavallo, Alberto, and Diego Aparicio. "Targeted Price Controls on Supermarket Products." Review of Economics and Statistics (forthcoming).

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Data and Replication Files

The data and code needed to replicate the results in this paper are available on Harvard University's Dataverse

In early 2020, a coronavirus pandemic swept the globe, ushering in unprecedented disruptions to the global economy. Both supply and demand were decimated by lockdowns and border closings, as well as reduced spending by fearful consumers. In response, governments around the world made equally unprecedented policy moves, spending trillions of dollars on fiscal stimulus measures to bridge the gap during the self-imposed shutdown. As the pandemic progressed, governments had to weigh the costs between loss of life due to opening up their economies and the economic devastation caused by delaying a reopening.

The Covid-19 Pandemic has led to changes in consumer expenditure patterns that can introduce significant bias in the measurement of inflation. I use data collected from credit and debit transactions in the US to update the official basket weights and estimate the impact on the Consumer Price Index (CPI). I find that the Covid inflation rate is higher than the official CPI in the US, for both headline and core indices. I also find similar results with Covid baskets in 12 out of 17 additional countries. The difference is significant and growing over time, as social-distancing rules and behaviors are making consumers spend relatively more on food and other categories with rising inflation, and relatively less on transportation and other categories experiencing significant deflation.

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Targeted Price Controls on Supermarket Products

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