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...

Scope economies resulting from the joint offering of loans and savings accounts (as opposed to loans only) are customarily invoked to promote the transformation of credit-only microfinance institutions (MFIs) into integrated loans-and-savings entities. To ensure robust inference, we estimate...