This paper shows that under imperfect competition the welfare effects of indirect tax harmonization may depend crucially on whether taxes are levied by the destination or the origin principle. In a standard model of imperfect competition, while harmonization always makes at least one country...

We develop a political-economic model of foreign aid allocation. Each ethnic group in the donor country lobbies the government for allocating more aid to its country of origin, and the government accepts contributions from lobby groups. Initial per-capita income of the recipients and those of...