The debate on the suitable background for a Central Bank governor has resurfaced in Nigeria. In September 2023, shortly after Olayemi Cardoso's nomination, the question was posed: should a central bank governor be an economist or a banker? Nigeria's economic challenges at the time included high inflation, foreign exchange shortages, and significant quasi-fiscal responsibilities accumulated by the Central Bank of Nigeria (CBN). Cardoso, primarily a banker, has implemented policies consistent with economic orthodoxy.
Cardoso inherited an institution with blurred responsibilities, having expanded into agricultural and manufacturing interventions while financing substantial government deficits. The CBN had also accumulated significant quasi-fiscal responsibilities. One significant development has been the attempt to restore the CBN's core mandate. Ways and Means financing reportedly declined from approximately N26.95 trillion in 2023 to N2.84 trillion by January 2026. This suggests progress towards restoring the boundary between fiscal and monetary policy.
Foreign exchange provides another important test of the CBN's performance. Cardoso inherited billions of dollars in unmet obligations. The CBN subsequently cleared the valid portion of an estimated $7 billion backlog and moved towards a more market-determined exchange-rate system. The transition was painful, with the naira depreciating substantially and businesses carrying dollar liabilities suffering losses. However, by 2026, foreign-exchange conditions had become more stable.
The CBN's aggressive monetary tightening, raising the Monetary Policy Rate to 27 percent before gradually reducing it to 23 percent by September 2026, also deserves mention. Headline inflation subsequently moderated to 14.63 percent in September. The CBN deserves credit for tighter liquidity management, improved exchange-rate stability, and reduced monetary financing. However, food supply, energy costs, and fiscal policy also influence inflation.
The economic costs of monetary tightening also require scrutiny. Elevated borrowing costs and substantial reserve requirements constrain credit availability, potentially discouraging investment by manufacturers and small businesses. Nigeria's economy expanded by 3.87 percent in 2025 and accelerated to 4.43 percent year-on-year in the second quarter of 2026. This represents progress, but growth of around four percent remains insufficient for Nigeria's rapidly expanding population and development needs.
The CBN's bank recapitalisation represents another consequential intervention. The CBN raised minimum capital requirements to N500 billion for international commercial banks, N200 billion for national banks, and N50 billion for regional banks. By March 2026, banks had reportedly raised N4.65 trillion, with 72.55 percent sourced domestically, while 33 banks met the revised requirements. Stronger banks should improve financial resilience and their capacity to finance investment.
International markets have recognised Nigeria's improving economic position. In August 2026, Moody's revised the country's sovereign outlook from stable to positive, citing stronger external resilience and economic growth. However, attributing these improvements entirely to monetary policy would be misleading, as fiscal reforms, external conditions, and domestic economic developments have also contributed. Ultimately, the question of whether a central bank governor should be an economist or a banker may not have a straightforward answer.
Key points
- An economist may bring stronger macroeconomic foundations, while a banker may offer deeper practical knowledge of financial markets and institutional risks.
- Cardoso's tenure suggests that neither background alone guarantees effective central banking.
- What matters is the ability to manage inflation, liquidity, exchange rates, financial stability, and expectations across an entire economy.
