We examine a multinational firm which has a decreasing marginal cost, and the optimal sales tax policies of the regions where that firm operates. We show that the regions set higher sales taxes than those given by a cooperative equilibrium. Each region fails to fully internalize the effects of...

In this paper we carry out a meta-analysis of recent studies into the costs of greenhouse gas mitigation policies that aim at the long-term stabilization of these gases in the atmosphere. We find the cost estimates of the studies to be sensitive to the level of the stabilization target, the...

In the homogenous good case the impact of a marginal cost variation on consumer surplus, industry profits and social surplus was studied in extensive manner. Assuming quantity competition and a standard quadratic utility this paper carries on this analysis in a differentiated good context. In...