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Customer deposits with Tier-One Nigerian Banks have hit N110 trillion ($73 billion) as at September, 2025.
Access Holdings had the highest customer deposits of N33.1 trillion among the Fantastic Five Banks (Access Holdings, Zenith Bank, UBA, First HoldCo and GTCO) as at September 2025.
Access Holdings customer deposits were more than double GTCO‘s which came in at N11.85 trillion in the same period.
Customer deposits for UBA stood at N23.79 trillion, Zenith Bank rose to N23.68 trillion, and First HoldCo was at N17.88 trillion as at September 2025.
Retail deposits are a cheaper source of funding for banks compared to institutional or wholesale funds. A large influx of these low-cost deposits helps widens the Net Interest Margin (NIM).
The Net Interest Margin is a profitability metric that measures the difference between the interest a bank earns on its assets, such as loans and investments, and the interest it pays on its liabilities like customer deposits.



