Nigerian banks are pivoting Africa through an interest income boom that powered the fastest growth among emerging markets in the first half of 2025, according to a new report by Fitch. Average net interest margin, an indicator that measures the difference between the interest lenders earn on loans and the interest they pay to depositors, for Africa was 2 per cent than that of all emerging markets put together during the period, said the credit rating in its Emerging Markets Largest Monitor Banks Monitor issued Tuesday. “EM banks’ net interest margins (NIMs) were generally stable at 4.2 per cent in 1H25,” according to the document. “Average NIMs declined slightly in most regions, but increased for African banks to 6.2 per cent (2024: 5.7 per cent), mostly due to banks in Nigeria,” it not...