This paper provides a comprehensive global, regional, and country-level update of: (i) efficient fossil fuel prices to reflect their full private and social costs; and (ii) subsidies implied by mispricing fuels. The methodology improves over previous IMF analyses through more sophisticated estimation of costs and impacts of reform. Globally, fossil fuel subsidies were $5.9 trillion in 2020 or about 6.8 percent of GDP, and are expected to rise to 7.4 percent of GDP in 2025. Just 8 percent of the 2020 subsidy reflects undercharging for supply costs (explicit subsidies) and 92 percent for undercharging for environmental costs and foregone consumption taxes (implicit subsidies). Efficient fuel pricing in 2025 would reduce global carbon dioxide emissions 36 percent below baseline levels, which is in line with keeping global warming to 1.5 degrees, while raising revenues worth 3.8 percent of global GDP and preventing 0.9 million local air pollution deaths. Accompanying spreadsheets provide detailed results for 191 countries.

This report provides actionable advice on how to design and implement fiscal policies for both development and climate action. Building on more than two decades of research in development and environmental economics, it argues that well-designed environmental tax reforms are especially valuable in developing countries, where they can reduce emissions, increase domestic revenues, and generate positive welfare effects such as cleaner water, safer roads, and improvements in human health. Moreover, these reforms need not harm competitiveness. New empirical evidence from Indonesia and Mexico suggests that under certain conditions, raising fuel prices can actually increase firm productivity. Finally, the report discusses the role of fiscal policy in strengthening resilience to climate change. It provides evidence that preventive public investments and measures to build fiscal buffers can help safeguard stability and growth in the face of rising climate risks. In this way, environmental tax reforms and climate risk-management strategies can lay the much-needed fiscal foundation for development and climate action.

Energy subsidies are aimed at protecting consumers, however, subsidies aggravate fiscal imbalances, crowd out priority public spending, and depress private investment, including in the energy sector. This book provides the most comprehensive estimates of energy subsidies currently available for 176 countries and an analysis of “how to do” energy subsidy reform, drawing on insights from 22 country case studies undertaken by the IMF staff and analyses carried out by other institutions.

This book offers a comprehensive guide to modern day taxation issues. It presents a thorough overview of many of the crucial aspects of applied taxation and current tax systems, and presents evidence that supports taxation as an important policy issue requiring immediate address globally. Contributions seek to address the core question of how to design a tax policy mix that can serve primarily efficiency, growth and possibly equity goals at a time where fiscal spending, for many economies, is not a viable option. Chapters provide a historical perspective on taxation, then go on to cover aspects of the modern theory of optimal taxation and tax design and provide valuable international perspectives on current tax practices and much required tax reforms. Empirical analysis on taxation and related economic data help the readers to understand how data-based observations and results are linked to the theory of taxation, and more importantly economic growth, before offering appropriate policy prescriptions. This book will be of interest to scholars and practitioners interested in learning more about taxation and why it matters today in the global economy.