DO TAXES ON SODA AND SUGARY DRINKS WORK? SCANNER DATA EVIDENCE FROM BERKELEY AND WASHINGTON STATE

Abstract

We study two beverage taxes: the SSB tax of 1¢/oz in the city of Berkeley (in effect since 2015) and the temporary 2010 soda tax of 0.166¢/oz in Washington State. Using detailed scanner data, we find that prices in Washington reacted sharply and promptly (often by a larger magnitude than the tax), whereas retail prices in Berkeley reacted marginally (by less than 30% the magnitude of the tax). Further, we find a 5% volume reduction in Washington but fail to detect an effect in Berkeley. We discuss the possible causes for the discrepancy in effectiveness, in particular cross‐border shopping. ( JEL H22, L66, I18)

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