What are some of the key causes and consequences of budget transparency? And how does transparency link with participation and accountability in the budget process? The International Budget Partnership (IBP) teamed up with some of the best researchers in the field to answer these questions—and others—by examining how budget transparency has evolved over time in varied country contexts, through case studies and quantitative analyses using data from the Open Budget Index. The results are summarized in the IBP’s recently released book, Open Budgets: The Political Economy of Transparency, Participation, and Accountability. Watch Paolo de Renzio, Senior Research Fellow for the IBP’s Open Budget Initiative and co-editor of the book, discuss budget transparency.