Banking the Poor explores level and determinants of financial access in 54 countries, mostly in Africa. It collects information from two sources: central banks and leading commercial banks in each surveyed country. It explores associations between countries' banking policies and practices and their levels of financial access, measured in terms of the numbers of bank account per thousand adults. It builds on the previous work measuring financial access through information from regulators, from banks, and also from users' perspectives in household surveys.