As the climate emergency worsens, our research aims to provide more evidence on what types of climate and environmental taxes are desirable for lower-income countries. The revenue and sustainability potential of these types of taxes is receiving increasing attention, but the vast majority of existing research focuses on high-income countries, and especially on carbon taxes. However, there are many types of environmental taxes, ranging from forestry taxes to import tariffs on used cars. Some of these taxes may be more feasible and attractive to lower-income countries now, and therefore hold the potential to shape policy in important ways.