The demand-driven rural investment fund (DRIF) is a new mechanism for decentralizing decisionmaking authority and financial resources to local governments and communities to use for investments of their choice. To counteract the local government's weak capacity to choose and implement projects well, central governments have often constrained the choices of communities by limiting the types of projects eligible for financing and requiring specific procedures for procurement and disbursement. This study explores the extent to which well-designed DRIF rules and incentive structures can substitute for central control. It looks at the different and often conflicting motivations of donors, central governments, and communities and explores how rules can be devised to allow actors to achieve their objectives.