Women make up a disproportionately large share of unbanked adults worldwide, according to new data from the Global Financial Inclusion (Global Findex) database. The data show that in developing economies women are 20 percent less likely than men to have an account at a formal financial institution and 17 percent less likely to have borrowed formally in the past year. These gaps persist across regions and within-country income categories. New research finds that legal discrimination against women and gender norms can explain some of the cross-country variation in access to finance for women. The database can be used to develop a deeper and more nuanced understanding of how women worldwide save, borrow, make payments, and manage risk.