What Will It Mean for Development Agencies to Be Effective in the Years Ahead?

Development agencies are being asked to deliver against a widening set of objectives with tighter budgets and more contested mandates. This paper uses an organizational, forward-looking lens to examine effectiveness, treating it as a question not only of what agencies aim to do but of what they are able to do under constraint and uncertainty. Drawing on semi-structured interviews with officials across four bilateral development agencies from OECD-DAC bilateral agencies, we show how external realities lead to contested mandates and tighter budgets, which increasingly set the terms of action, and how, downstream of these pressures, internal bottlenecks – capacity and skills gaps, siloed coordination, slow processes, and weak learning and results systems – frequently determine whether agencies can respond coherently at all. We synthesize the implications through four strategic questions that shape reform choices, asking how to clarify agency role and purpose, improve and scale impact under constrained budgets, strengthen responsiveness to partner needs as contexts shift (including faster, more locally informed decision pathways), and evidence and communicate value to sustain legitimacy with both domestic and partner audiences. We offer several recommendations for agencies based on our findings, and conclude that the next phase of the effectiveness agenda may hinge less on restating principles than on building organizational coherence and adaptive capacity that can translate contested mandates into credible action.