At present, many microfinance institutions (MFIs) not only lend but also collect savings to serve better the needs of the poor. Little is known, however, if MFIs' overall costs decrease or increase as a consequence, nor it is clear which MFIs may benefit the most from expansion into savings...

We extend a recently developed generalized local polynomial estimator into a semiparametric smooth coefficient framework to estimate a generalized cost function. The advantage of the generalized local polynomial approach is that we can simultaneously choose the degree of polynomial for each...

The costs and benefits of subsidized microfinance are still a controversial topic. We evaluate how subsidies affect the cost-efficiency of microfinance institutions (MFIs). At the same time, we account for endogenous self-selection into the business models of credit-only versus...