A Review of Critical Issues on Tax Design and Tax Administration in a Global Economy and Developing Countries

The mobilization of domestic tax resource has become a key issue for developing countries. In this report, we provide some facts and figures on the levels and structures of taxation around the world with special attention to Low Income Countries, (LICs). We use the new ICTD database covering 203 countries with 40 tax items over the period 1980-2010. We discuss some principles of tax design in a global economy that are relevant for LICs. We also review some critical issues on corruption and compliance to see how they relate to growth and tax evasion. We then provide a benchmark framework to assess the overall performance of the government tax collection. We use the tax effort index that measures the gap between the potential tax and the actual tax. The novelty of this tax effort index is twofold. First it takes into account spatial variables to capture the geographic dependence. Second it breaks down the tax effort analysis into different tax items to capture the possible tax shift. We conclude with a full ranking of tax effort for all countries and some suggestions of tax reform for a subset of countries that are targeted by the Belgian Development Cooperation.