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Games within borders: are geographically differentiated taxes optimal?

David Agrawal ()

International Tax and Public Finance, 2012, vol. 19, issue 4, 574-597

Abstract: The discontinuous tax treatment of sales at borders creates incentives for individuals to cross-border shop. This paper addresses whether it is optimal for a state composed of multiple regions to levy differentiated commodity tax rates across the regions. In a model where states maximize social welfare, a state’s optimal commodity tax system is almost always geographically differentiated. The optimal pattern of geographic differentiation critically depends on fundamental parameters as well as whether the state has a preference for high or low taxes. Under the assumption that utility is linear in consumption and that the elasticity of cross-border shopping is less than unity in absolute value, high-tax states will find it optimal to set a tax rate that is lower in the border region than in the periphery region and low-tax states will find it optimal to set a tax rate that is higher in the border region than in the periphery region. Optimizing high-tax states will set a higher tax rate in the border region if the social welfare measure is sufficiently redistributive. With welfare maximization, it is possible for taxes to be higher in the region near the state border—an outcome that cannot arise when the government cares only about total tax revenue. Copyright Springer Science+Business Media, LLC 2012

Keywords: Commodity taxation; Cross-border shopping; Tax competition; Preferential tax rates; H21; H25; H73; H77; R12 (search for similar items in EconPapers)
Date: 2012
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