Credit risk and bank competition in Sub-Saharan Africa

Abstract

This paper investigates the relationship between bank competition and stability in Sub-Saharan Africa. Using financial statements on 221 banks from 33 countries over the period 2000–15, we provide evidence for a U-shaped relationship between bank competition and credit risk. Up to a certain threshold, higher levels of bank competition are associated with lower credit risk. Above this threshold, more competition increases credit risks as the positive effects of competition are outweighed by the adverse effects of rising competition. The optimal threshold appears to be higher for African banks compared to banks from developed countries. We also find that credit risk in Sub-Saharan Africa is not only related to macroeconomic determinants, such as growth, public debt, economic concentration and financial development, but also to the business and regulatory environment. In particular, bank risks appear to be lower in countries where credit registry coverage is higher and the tenure of supervisors is shorter.