This chapter summarizes the economic principles that would help evaluate individual investment projects, general expenditure programs, government policies, and the regulation of economic activities. The objective of the project and program evaluation is to measure the net benefit of a project or...

Tax policies are informed by principles developed in the tax theory and policy literature. This Element surveys the policy lessons that emerge from optimal tax analysis since the 1970s. This Element begins with the evolution of tax policy principles from the comprehensive income approach to the...