Book excerpt: For a long time the topic of national development banks was limited to a debate between admirers and detractors of these institutions, often inserted into a more general debate of state versus markets. Since the 2007/8 North Atlantic financial crisis however, interest and support for these institutions has broadly increased in both developing and developed countries. Key issues such as understanding how development banks work, what their main aims are, and what their links with the private financial and corporate sector are have come to the forefront, and there is an increased interest in what instruments, incentives, and governance work better in general and in particular contexts. The Future of National Development Banks provides an in-depth study of several key examples of these institutions based in Brazil, Chile, China, Colombia, Germany, Mexico, and Peru. It explores horizontal issues such as their role in innovation and structural change, sustainable infrastructure financing, financial inclusion, and regulatory rules. It provides both research and policy-oriented perspectives on how these banks can make a significant contribution to a countries' development, and analyses their roles within broader economic policy, their governance, and the main instruments they use to perform their function. The Future of National Development Banks has important policy implications for countries that have these institutions and can improve them, and countries that do not have them yet and can learn from best practice.