Financial market data shows Nigeria’s policy rate-to-inflation differential has narrowed. It now stands at 7.61 percentage points. The shift followed the Central Bank of Nigeria’s (CBN) 350-basis-point rate cut. Nigeria has dropped behind Ghana’s 9-percentage-point margin. The differential matters for foreign portfolio capital. Investors compare real returns across markets. Higher differentials attract carry trade. Lower differentials reduce appeal.
Nigeria attracted hot money through high rates. In 2024 and 2025, the MPR peaked at 27.5%. Inflation was high, but so were nominal yields. The real return was positive. Foreign investors bought naira bonds. They earned the differential. The strategy supported the naira. It also created vulnerability. When rates fall or inflation rises, the differential narrows. Investors exit. The naira weakens. Nigeria has seen this cycle before.
The CBN cut rates to stimulate growth. Inflation has fallen to 15.39%. The MPR is 23%. The differential is 7.61 points. That is still positive. But Ghana now offers 9 points. Foreign investors may shift capital to Ghana. The cedi could benefit. The naira could face pressure.
The CBN is aware. It wants lower rates to support business. It needs high rates to attract capital. The trade-off is real. The rate cut was a bet that growth matters more than hot money. If the bet fails, the CBN may reverse. It may also use other tools. Reserves are at $55 billion. The CBN can defend the naira. But defence is expensive.
The equity market has benefited. Lower rates drive capital into stocks. The NGX has rallied. Foreign investors have returned after the FTSE reclassification. But portfolio flows are fickle. They can reverse quickly. The differential is a warning.
Winners: Ghana, which gains relative appeal. Equity investors, who benefit from lower rates. Borrowers, who face cheaper credit. Losers: The naira, if capital exits. Bondholders, who face lower yields. The CBN, if it must defend the currency. Foreign investors, who face lower returns.
Bottom Line: Nigeria’s yield advantage narrowed. Ghana now offers more. Hot money may follow. The CBN cut rates for growth. It risks outflows. The balance is delicate. The naira is the variable.