The Handbook of Microfinance gathers selected work from academics and field practitioners. In an attempt to understand the enormous gap between the limited number of clients that are currently benefiting from microfinance services, and the huge number of potential clients that are not, the selected contributions in this handbook have one common tread: the prevailing mismatch between demand by clients of microfinance institutions and potential clients selecting themselves out for their demand for a wider array of financial products' is not being met.