Our societies are witnessing a steady increase in longevity. This demographic evolution is accompanied by some convergence across countries, whereas substantial longevity inequalities persist within nations. The goal of this article is to survey some crucial implications of changing longevity on...

This paper examines information sharing between governments in an optimal taxation framework. We present a taxonomy of alternative systems of international capital income taxation and characterize the choice of tax rates and information exchange. The model reproduces the conclusion of the...

The purpose of this paper is to survey the theoretical literature on wealth transfer taxation. The focus is normative: we are looking at the design of an optimal tax structure from the standpoint of both equity and efficiency. The gist of this survey is that the optimal design closely depends on...

We develop a two-region model where the decentralized provision of spillover goods can be financed by means of taxes or user fees. In order to enforce the fees regions have to invest in exclusion. We show that a decentralized solution tends to be inefficient. There will be over-investment in...

The issue of capital tax competition in source-based capital taxes is viewed to be unproblematic if residence-based capital taxation depends on the co-operation of source countries to assist in collecting tax revenues that benefit the residence country. We analyze conditions under which...

In public procurement a temporal separation of award and actual contracting can frequently be observed. In this paper the authors give an explanation for this institutional setting. For incomplete procurement contracts they show that such may increase efficiency. They show that efficiency can be...