Participatory budgeting (PB) has moved from a niche democratic experiment to a mainstream governance tool, now used in thousands of cities worldwide. A recent international study by Merrick Langdon, Harlow Pickens, Grace Nakato & Bhavana Nayak examining participatory budgeting initiatives between 2020 and 2024 provides one of the most comprehensive empirical assessments to date of how citizen involvement in budgeting affects transparency, accountability, fiscal responsibility, and public trust.
At first glance, the findings appear unequivocally positive. Over five years, the number of participatory budgeting projects globally increased from 120 to 220, while total allocated budgets grew from $500 million to $900 million. Citizen participation rates also rose steadily, from 45% to 58%. These trends reflect growing political and administrative confidence in participatory budgeting as a governance instrument. However, the study’s more nuanced insights emerge when participation is examined not simply as a democratic ideal, but as a measurable driver of governance outcomes.
The study finds an exceptionally strong relationship between citizen participation and improvements in transparency. Statistical analysis shows a near-perfect correlation between participation rates and transparency scores, with transparency scores rising from 60 to 74 over the study period. In practical terms, this suggests that when citizens are meaningfully involved in budget decisions, governments are more likely to publish clearer information, justify spending choices, and open decision-making processes to scrutiny.
Yet the research cautions against assuming transparency alone guarantees better governance. In some municipalities, transparency improved without corresponding reductions in corruption indicators. The implication is critical: participatory budgeting increases visibility, but visibility must be paired with accountability mechanisms to change outcomes.
Public trust in government rose significantly in jurisdictions implementing participatory budgeting, increasing from 55% in 2020 to 70% in 2024. Importantly, the study attributes this growth in trust not merely to consultation, but to citizens’ perceptions of real influence and oversight. Where participatory budgeting functioned as a consultative or symbolic exercise, with final decisions remaining opaque, trust gains were weaker. In contrast, trust increased most where participatory budgeting allowed citizens to monitor implementation, track spending, and see projects completed as approved. The research reinforces a key lesson for municipalities: participation builds legitimacy only when it is visibly consequential.
One of the study’s most compelling findings is the relationship between citizen participation and fiscal responsibility. Regression analysis indicates that for every 1% increase in citizen participation, fiscal responsibility scores improved by approximately 1.09 points. Over five years, fiscal responsibility scores rose from 58 to 72. This improvement is attributed to heightened public scrutiny, reduced tolerance for waste, and stronger incentives for administrators to justify expenditures. Notably, gains were strongest in municipalities that institutionalized participatory budgeting over multiple years, rather than treating it as a one-off engagement initiative.
Digital participatory budgeting platforms played a significant role in expanding engagement, contributing to double-digit increases in participation rates. However, the study highlights a persistent equity challenge: digital access is uneven. Without complementary offline engagement strategies, digital tools can unintentionally exclude seniors, low-income residents, and marginalized communities, undermining the inclusivity that participatory budgeting aims to promote.
Lessons for Municipalities
The evidence points to clear lessons for municipalities considering or refining participatory budgeting:
- Design for influence, not optics
Participatory budgeting must offer real decision-making power and visible follow-through. Symbolic consultation erodes trust rather than builds it. - Pair transparency with accountability
Publishing information is not enough. Independent oversight, audits, and public reporting are essential to convert transparency into fiscal discipline. - Institutionalize the process
The strongest outcomes occur where participatory budgeting is embedded in policy or municipal frameworks, protecting it from political cycles. - Invest in civic capacity
Financial literacy and civic education are critical so residents can participate meaningfully, not just numerically. - Blend digital and in-person engagement
Digital platforms expand reach, but inclusive design requires multiple entry points to avoid deepening participation gaps.
Ultimately, participatory budgeting is not a shortcut to better governance. When carefully designed, resourced, and sustained, it functions as a powerful mechanism for aligning public spending with community priorities, while strengthening transparency, accountability, and trust in local government.
