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Tree: proven across many places

Participatory budgeting

Residents directly decide how part of a public budget is spent, which moves money toward basic services in poorer areas.

Start small

Ask one local council, school or community fund to commit a small pot (for example US$10,000 to 50,000) for one cycle. Run 3 to 4 neighbourhood idea assemblies, a volunteer delegate group of 10 to 15 people to develop proposals, and a public vote over about 4 to 6 months. Publish delivery progress afterwards.

The problem

Failure to achieve the Sustainable Development Goals by 2030. Public budgets often skip the sanitation, health and education needs of poorer neighbourhoods because of clientelism and weak accountability.

Where it fits

Thrived where a local government had real investment money to hand over, strong political commitment, and organised neighbourhood associations. Needs yearly cycles of open assemblies, elected delegates, rules that favour needier districts, and visible delivery of the projects people chose.

The principle underneath

Giving residents binding say over real money brings information about local needs into the budget and makes officials accountable for delivery. Spending then follows need rather than patronage.

Who to call

Participatory Budgeting Project (USA); People Powered (global hub for participatory democracy); International Observatory on Participatory Democracy (OIDP); WRI Ross Center for Sustainable Cities.

Watch out for

Tokenistic budgets too small to matter. Dependence on a single mayor or party. Low turnout from the poorest groups unless the rules weight need. Projects that are voted but never built, which destroys trust.

Where it comes from

Created in Porto Alegre, Brazil in 1989 with neighbourhood associations, and since spread to more than 2,700 governments worldwide. The method is openly documented and freely adaptable.

Where it's worked

  • Porto Alegre, Brazil · 1989 to 1997

    Sewer and water connections rose from 75% to 98% of households; health and education share of the budget rose from 13% to about 40%.

    DocumentedSource

  • Brazilian municipalities (national panel) · 1990 to 2004

    PB municipalities raised health and sanitation spending and cut infant mortality by 1 to 2 per 1,000 births.

    Peer reviewedSource

  • New York City, USA · 2009 to 2018

    PB districts shifted discretionary capital toward schools, public housing and streets across 10,728 projects and over US$2.5 billion.

    Peer reviewedSource

Where it failed

In Porto Alegre, participation peaked around 2002 and declined; a new administration suspended PB in 2017, citing lack of resources, after political support had faded. World Bank analysis found it stayed limited to neighbourhood capital projects, with weak budget oversight. Elsewhere, PB pots are often too small to shift outcomes.