Strategic capital taxation, tradable emission permits and global pollution

Abstract

The paper considers a two-country model with international capital mobility and production-generated cross-border pollution. It examines the effectiveness of alternative policy combinations consisting of capital taxes and nationally or internationally tradable emissions permits in reducing global pollution. The internationally mobile capital is taxed according to three different rules, namely, capital tax exemptions, capital tax credits and capital tax deductions. Our key result is that, under certain conditions, the lowest Nash equilibrium level of global pollution is achieved with a policy mix combining either capital tax exemptions or capital tax credits with internationally, rather than nationally, tradable emission permits.