Interest rates in community-managed microfinance: How the poorest Africans earn sixty percent return on their savings

It is common to see the interest rate on savings in community-managed microfinance being reported as "20-30% annually". Using panel data from 204 groups in Malawi, I show that the right figure is likely to be at least twice this figure. This is due to sector-wide application of non-standard interest rate calculation and unrealistic assumptions about the savings profile in the groups. In the 204 groups, the annual interest rate on savings is 63%. For transparency and accountability donors, politicians and practitioners should change their interest rate calculations. Furthermore, the proposal method will allow practitioners to better monitor group performance.