This paper provides an overview of the key economic factors that shape tax policy reform in many high-income countries, developing countries, and/or transition economies. The paper describes and evaluates global and regional developments with respect to tax rates and revenue ratios over the last...

This paper compares the optimal environmental tax with two alternative definitions of marginal environmental damages. One definition reflects the social marginal rate of substitution between income and the environment; the other reflects the sum of households' marginal willingness to pay. The...

This paper examines the relative merits of two dominant economic instruments for reducing pollution—”green” taxes and tradable permits. Theoretically, the two instruments share many similarities, and on balance, neither seems preferable to the other. In practice, however, most countries...