Leading advocates for microfinance have put forward an enticing "win-win" p
roposition: microfinance institutions that follow the principles of good ba
nking will also be those that alleviate the most poverty. This vision forms
the core of widely-circulated "best practices," but as a general propositi
on the vision is fully supported neither by logic nor by the available empi
rical evidence. Recognizing the limits to the win-win proposition is an imp
ortant step toward reaching a more constructive dialogue between microfinan
ce advocates that privilege financial development and those that privilege
social impacts. (C) 2000 Elsevier Science Ltd. All rights reserved.