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Brief SummaryEcobank Nigeria and Access Bank lead Nigeria’s banking sector by the size of their assets. In terms of customer reach, Access Bank and UBA are the banks that have the largest customer bases, followed closely by First Bank and Zenith Bank. Tier-1 dominance: The traditional Tier-1 banks, which are Access Bank, UBA, Zenith Bank, First Bank, and GTCO, remain the most influential financial institutions in Nigeria, both in assets and customer reach.
We've curated two lists that highlight the richest and biggest banks in Nigeria: richest by total assets and biggest by estimated customer base. The figures are based on the most recent banking sector reports and credible financial sources like the Central Bank of Nigeria (CBN) and Security and Exchange Commission (SEC) of Nigeria.
Top 10 Richest Banks in Nigeria by Total Assets (2026 Estimate)
This table shows the ranking of Nigerian banks by the size of their balance sheet and their total assets, which show their financial strength and ability to lend, invest, and support economic activity.
| Rank | Bank Name | Total Assets |
|---|---|---|
| 1 | Ecobank Nigeria Plc | ₦49.1 Trillion |
| 2 | Access Bank Plc | ₦42.5 Trillion |
| 3 | United Bank for Africa (UBA) | ₦33.3 Trillion |
| 4 | Zenith Bank Plc | ₦30.9 Trillion |
| 5 | First Bank of Nigeria | ₦27.2 Trillion |
| 6 | GTCO (GTBank) | ₦16.7 Trillion |
| 7 | Stanbic IBTC Bank | ₦8.1 Trillion |
| 8 | FCMB Group | ₦7.5 Trillion |
| 9 | Sterling Bank | ₦4.1 Trillion |
| 10 | Wema Bank | ₦3.9 Trillion |
Top 10 Nigerian Banks by Customer Base
Customer base is a key measure of retail reach, mass adoption, and market penetration. This table captures the ranking of Nigerian biggest bank based on how many customers they serve. The numbers are approximately derived from various banking performance reports and credible banking analyses.
| Rank | Bank Name | Customer Base |
|---|---|---|
| 1 | Access Bank Plc | 60+M Customers |
| 2 | United Bank for Africa (UBA) | 45+M Customers |
| 3 | First Bank of Nigeria | 42M Customers |
| 4 | Zenith Bank Plc | 30+M Customers |
| 5 | GTBank (GTCO) | 28M Customers |
| 6 | Fidelity Bank | 15+M Customers |
| 7 | Stanbic IBTC Bank | 9+M Customers |
| 8 | FCMB Group | 9M Customers |
| 9 | Union Bank of Nigeria | 8M Customers |
| 10 | Wema Bank | 5+M Customers |
Note: Some banks may report larger digital or mobile customer counts that aren’t fully consolidated in public data.
