This paper explores the impact of intensified tax competition within federal systems characterized by the presence of both horizontal tax externalities between the states and vertical tax externalities between states and federal government. It shows that although these point in opposite...

The international exchange of tax information, and its merits compared to withholding taxes, is the central topic in current debates in international tax policy.The purpose of this paper is to characterize and compare the tax regimes that emerge with and without information exchange, under the...