At a time of growing mistrust in democratic institutions, PB and other methods of participatory democracy have often been seen as a way to help reverse this.
The World Bank has published research showing that municipalities in Brazil that give citizens the opportunity to voice their preferences on policies and spending (including public policy councils and participatory budgeting) collect significantly more local taxes. For instance, the adoption of PB leads to the collection of up to 39% more tax revenues.
Michael Touchton; Brian Wampler; Tiago Peixoto
Read the WB paper