Umeå Economic Studies

Nr 862: Keeping up with the Joneses, the Smiths and the Tanakas: Optimal Taxation with Social Comparisons in a Multi-Country Economy

Thomas Aronsson (thomas.aronsson@econ.umu.se) and Olof Johansson-Stenman (olof.johansson@economics.gu.se)

Abstract:

Recent empirical evidence suggests that between-country social comparisons have become more important over time. This paper analyzes optimal income taxation in a multi-country economy, where consumers derive utility from their relative consumption compared with both other domestic residents and people in other countries. The optimal tax policy in our framework reflects both correction for positional externalities and redistributive aspects of such correction due to the incentive constraint facing each government. If the national governments behave as Nash competitors to one another, the resulting tax policy only internalizes the externalities that are due to within-country comparisons, whereas the tax policy chosen by the leader country in a Stackelberg game also reflects between-country comparisons. We also derive a globally efficient tax structure in a cooperative framework. Nash competition typically implies lower marginal income tax rates than chosen by the leader country in a Stackelberg game, and cooperation typically leads to higher marginal income tax rates than the non-cooperative regimes.

Keywords: Optimal taxation, relative consumption, inter-jurisdictional comparison, asymmetric information, status, positional goods

JEL-Codes: D03, D62, D82, H21

45 pages, Monday, August 12, 2013

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