This consultancy, spanning April 20 to June 19, 2026 (20 working days) with a total value of US$12,500, will deliver comprehensive research and capacity-building outputs to empower six key CSO networks—Budget Working Group (BWG), Anti-Corruption Working Group (ACWG), Access to Information (A2I), Women for All (W4All), Social Protection for All (SP4AL), and I-SAF—in advancing evidence-based advocacy on public financial management (PFM) in Cambodia.  The primary output is a 15-20 page Research Needs Assessment Report, featuring a detailed gap analysis and capacity matrix mapping knowledge priorities across the six networks. This will draw from 20+ consultations, including surveys, semi-structured interviews, and two workshops (one virtual, one in-person in Phnom Penh), culminating in 5-10 actionable recommendations to guide future joint research agendas.  Complementing this, the consultancy produces four thematic Policy Briefs (5-8 pages each, with infographics and executive summaries in Khmer/English). The Green PFM brief analyzes climate expenditure tagging (e.g., flood resilience budgets amid $100M+ annual damages). The Tax Equity/Justice brief employs incidence modeling to address regressive structures (tax-to-GDP ~15%). The Investment Climate brief scrutinizes FDI transparency and opaque incentives prone to elite capture. The Public Procurement brief develops a risk framework for mega-infrastructure projects, incorporating ≥8 interviews and 1-2 case studies per theme.  To operationalize findings, an Advocacy Toolkit will provide practical CSO tools, including checklists and scorecards for monitoring green budgets, tax progressivity, investment incentives, and procurement transparency. These user-friendly resources integrate gender and climate lenses for inclusive application.  Finally, dissemination includes a 20-slide PowerPoint presentation and facilitation support for a 1-day multi-stakeholder workshop (logistics covered by NGOF), plus full handover of raw data, editable files, and Khmer summaries. These outputs align with SDGs 10, 13, and 16, Cambodia's PFM Reform Roadmap (2024-2028), and Rectangular Strategy Phase IV, equipping CSOs for impactful 2026 budget advocacy.