Optimal second best taxation of addictive goods in dynamic general equilibrium: a revenue raising perspective

Luca Bossi, Pedro Gomis-Porqueras and David Kelly

The B.E. Journal of Macroeconomics, 2014, vol. 14, issue 1, 75-118

Abstract: In this paper we derive conditions under which optimal tax rates for addictive goods exceed tax rates for non-addictive consumption goods within a rational addiction framework where exogenous government spending cannot be financed with lump sum taxes. We reexamine classic results on optimal commodity taxation and find a rich set of new findings. Two dynamic effects exist. First, households anticipating higher future addictive tax rates reduce current addictive consumption, so they will be less addicted when the tax rate increases. Therefore, addictive tax revenue falls prior to the tax increase. Surprisingly, the optimal tax rate on addictive goods is generally decreasing in the strength of tolerance, since strong tolerance strengthens this tax anticipation effect. Second, high current tax rates on addictive goods make households less addicted in the future, affecting all future tax revenues in a way which depends on how elasticities are changing over time. Classic results on uniform commodity taxation emerge as special cases when elasticities are constant and the addiction function is homogeneous of degree one. Finally, we also study features of addictive goods such as complementarity to leisure that, while not directly related to the definition of addiction, are nonetheless properties many addictive goods display.

Keywords: addictive goods; dynamic optimal taxation; habit formation; Ramsey model (search for similar items in EconPapers)
JEL-codes: E61 H21 H71 (search for similar items in EconPapers)
Date: 2014
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DOI: 10.1515/bejm-2013-0099

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