Economics
Microfinance Interest Rates and the Mission Drift Debate
Quick fact
Some microfinance institutions charge annual interest rates of 30% to over 70%, far above conventional bank loans, yet they are often the only credit source for the poor.
Why this is interesting
Microfinance promises to lift people out of poverty, yet some micro-loans carry interest rates higher than typical credit cards. How can this be, and does it still help?
Read the full explanation
Understanding Microfinance Interest Rates and the Mission Drift Debate
Imagine borrowing $200 from a local lender, only to owe back $280 a year later. Microfinance institutions (MFIs) justify such high rates by pointing to the very high cost of lending small amounts. Processing a $200 loan costs almost as much as processing a $20,000 loan. Serving borrowers who live in remote areas, have no credit history, and don't have collateral requires field officers, group meetings, and intense monitoring. These fixed costs are spread over tiny loans, making each loan expensive to administer. In addition, MFIs must cover losses from borrowers who cannot repay. At the same time, they aim to be financially sustainable—not rely on donations forever—which means they need to cover costs and make some profit. As a result, the interest rate must be much higher than a typical bank interest rate. However, the promise of microfinance is that even a small loan can help a borrower start a business, smooth consumption, or respond to emergencies, generating returns greater than the interest paid. The debate centers on whether these rates are fair or exploit borrowers.
A deeper explanation
The mission drift debate arises from a tension between the social and financial objectives of microfinance. When an MFI prioritizes financial sustainability and profitability, it may charge higher rates or shift its lending toward wealthier clients—a phenomenon called ‘mission drift.’ Proponents of the ‘sustainability approach’ argue that MFIs must be self-sufficient; without profits, they cannot expand or reach more poor people, and they become vulnerable to insolvency. Critics, however, point to cases like Compartamos Banco in Mexico, which charged rates exceeding 100% and made fortunes for its investors, leading to calls that they are exploiting the poor rather than helping them. The yield required to cover costs and profits is often a multiplier of the average loan size and operating expenses; smaller loans and higher operating cost ratios push up the interest rate. Some MFIs, like Grameen Bank, prioritize a social mission and lend at lower rates, relying on cross-subsidies or donor support. This debate highlights the fundamental challenge of balancing ‘doing good’ with ‘doing well’—a challenge central to the field of social enterprise. Understanding this helps explain why microfinance is not a simple silver bullet for poverty, and why ethical considerations are as important as financial ones.