Assessment of climate change policies requires aggregation of costs and benefits over time and across generations, a process ordinarily done through discounting. Choosing the correct discount rate has proved controversial and highly consequential. To clarify past analysis and guide future work,...

Climate policies vary widely across countries, with some countries imposing stringent emissions policies and others doing very little. When climate policies vary across countries, energy-intensive industries have an incentive to relocate to places with few or no emissions restrictions, an effect...

This paper analyzes the use of neutrality conditions, such as capital export neutrality, capital import neutrality, capital ownership neutrality, and market neutrality, in international tax policy. Neutralities are not appropriate tools for designing tax policy. They each identify a possible...

The audit policy of a tax authority can signal its audit effectiveness. We model this process and show that in limited circumstances an ineffective authority can masquerade as being effective. We show that high maximal penalties imply underreporting of income