The Nigerian banking sector is structured into several categories, including commercial banks, merchant banks, microfinance banks, development finance institutions, and non-bank financial institutions. Among these, commercial banks are the most prominent, providing a wide range of financial services to individuals, businesses, and the government. Commercial banks dominate the Nigerian banking landscape, offering services such as deposits, loans, foreign exchange, and investment banking. Notable commercial banks include Zenith Bank, Guaranty Trust Bank (GTBank), First Bank of Nigeria, United Bank for Africa (UBA), and Access Bank. Merchant banks focus on wholesale banking, providing services to large corporations and high-net-worth individuals. Examples include Coronation Merchant Bank and Rand Merchant Bank.The Nigerian banking sector is competitive, with the largest banks often referred to as the “Tier 1” banks. These include Zenith Bank, GTBank, First Bank, UBA, and Access Bank, which collectively hold a significant share of the market in terms of assets, deposits, and loans. These banks are known for their extensive branch networks, innovative digital banking platforms, and strong financial performance.