Efforts to control atmospheric accumulations of greenhouse gases that threaten to heat up the planet are in their infancy. Although the IMF is not an environmental organization, environmental issues matter for the organization’s mission when they have major implications for macroeconomic performance and fiscal policy. Climate change clearly passes both these tests. This volume provides practical guidelines for the design of fiscal policies (carbon taxes and emissions trading systems with allowance auctions) to reduce greenhouse gases. Not only are these instruments potentially the most effective at exploiting emission reduction opportunities in the near and longer term, but they can also generate for many countries a valuable new source of government revenue. The full book can be ordered at the IMF Bookstore. The summary for policymakers can be downloaded below.