First, the document introduces the $380 billion opportunity for banks in developing economies to profitably serve underbanked individuals and micro-enterprises through financial inclusion. Second, it describes how digital technology and economic growth are enabling new forms of accessible and low-cost financial services, while competitors are also moving to capture this market. Third, the document outlines six key insights from a study of 30 banks on developing strategies and capabilities for financial inclusion, such as starting with payments and savings, using savings groups, and balancing physical and digital channels.