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Soda Taxes And The Prices of Sodas And Other Drinks: Evidence From Mexico

Jeffrey Grogger

American Journal of Agricultural Economics, 2017, vol. 99, issue 2, 481-498

Abstract: To combat a growing obesity problem, Mexico imposed a nationwide tax on drinks with added sugar, popularly referred to as a “soda tax,” effective January 2014. Since the tax took effect nationwide, there is no conventional control group that can be used as a baseline to estimate how the tax affected prices. Instead, I make use of control commodities, that is, untaxed goods that are not substitutes for the taxed drinks. I analyze data from Mexico’s Consumer Price Index program, using the synthetic control method and a time-series intervention analysis. In both cases I employ a placebo inference approach akin to permutation inference. The estimates show that soda prices rose by more than the amount of the tax. There is less evidence that the prices of potential substitutes rose, possibly indicating that consumers did not switch to those products after the tax took effect. Some simple calculations suggest that the soda price increase could lead to a two- to three-pound reduction in mean weight, which amounts to roughly 1%–2% of mean body mass.

Keywords: Overshifting; pass-through; soda taxes (search for similar items in EconPapers)
JEL-codes: H2 I18 (search for similar items in EconPapers)
Date: 2017
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Citations: View citations in EconPapers (57)

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Related works:
Working Paper: Soda Taxes and the Prices of Sodas and Other Drinks: Evidence from Mexico (2016) Downloads
Working Paper: Soda Taxes and the Prices of Sodas and Other Drinks: Evidence from Mexico (2015) Downloads
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