Impact Assessment Methodologies for Microfinance : Theory, Experience and Better Practice

Microfinance programs and institutions are increasingly important in development strategies but knowledge about their impacts is partial and contested. This paper reviews the methodological options for the impact assessment (IA) of microfinance. Following a discussion of the varying objectives of IA it examines the choice of conceptual frameworks and presents three paradigms of impact assessment: the scientific method, the humanities tradition and participatory learning and action (PLA). Key issues and lessons in the practice of microfinance IAs are then explored and it is argued that the central issue in IA design is how to combine different methodological approaches so that a "fit" is achieved between IA objectives, program context and the constraints of IA costs, human resources and timing. The conclusion argues for a greater focus on internal impact monitoring by microfinance institutions