Import Tariffs as Environmental Policy Instruments

The theoretical claims for eco-tariffs are rigorously analyzed within a unified framework formed of an international trade model enriched with both a domestic and a global externality. During the course of the analysis the model is modified to analyze an array of contexts for which eco-tariffs have been claimed to improve environmental quality or welfare. The circumstances and conditions are characterised under which such tariffs can be shown to improve environmental quality and social welf...