This book analyses the participatory budgeting practice as it has evolved in evaluated countries, focusing on what is substantially at stake concerning the budget and issues involved, the actual participation, the way such processes are organised and administered, and the outcomes of such processes. It concludes that participatory budgeting in selected European countries is far away from the level of 'best practice', but that all experiences are not just trivial pursuits. The information collected serves to check, to what extent participatory budgeting as practiced in the countries involved presents a real attempt to change municipal budgets towards addressing the needs of marginalized groups and to improve decision-making