Within the framework of spatial tax competition with cross-border shopping, we examine the choice of tax method between ad valorem tax and unit (specific) tax. The paper shows that governments endogenously choose ad valorem tax not because of a classic welfare reason, but because it is a good...

A widely noticed result by de Crombrugghe and Tulkens (1990) states that asymmetric commodity tax competition always leads to tax rates being too low in both countries, even though there are counteracting tax base and terms of trade effects. This note argues that the result depends crucially on...

This paper contributes to resolving the puzzle that in practice most countries use ad valorem (corporate income) taxation, while a large part of the tax competition literature views business taxes as unit (wealth) taxation. We point to the dual role that corporate taxation plays in attracting...

We introduce cross-border shopping and indirect tax competition into a model of optimal taxation. The Atkinson-Stiglitz result that indirect taxation cannot improve the efficiency of information-constrained tax-transfer policies, and that indirect taxes should not be differentiated across goods,...

We analyze the two-country model of fiscal competition of Kanbur and Keen (1993) where countries differ in size and use a commodity tax to reach their objective of revenue maximization. Due to fiscal externalities, the non-cooperative outcome is inefficient. Besides, the international optimum...