A macroeconomics perspective on international coordination in sales taxes

This article investigates how international coordination vis-à-vis sales tax policies affects the welfare of participating countries. A country's tax policies have asymmetric effects on the pricing behaviors of domestic and overseas producers. International cooperation endogenizes the externality that improves the purchasing power of foreign residents, but at the cost of its own residents’ work efforts. The first-best taxes are lower than in the noncooperative case. When world welfare is utilitarian, smaller economies may experience welfare losses from cooperation under the weak income effect of sales tax. We propose a coordinated tax rule that all countries agree to employ.