Corporate governance refers to the system of rules, practices, and processes by which companies are directed and controlled. Earnings management involves the manipulation of financial statements to meet managerial or regulatory objectives. The purpose of this study is to examine the effect of corporate governance attributes on earnings management practices in Nigerian listed commercial banks, focusing on board independence, audit committee effectiveness, board size, and managerial ownership. The outcome of this research is motivated by concerns that weak governance and managerial discretion allow earnings manipulation, affecting investor confidence and financial stability in the Nigerian banking sector.
Secondary data were collected from audited financial statements and corporate governance reports of 80 listed commercial banks over five years. Structured data extraction forms were used to systematically gather relevant information on governance attributes and earnings management indicators. The findings show that 72.5% of respondents agreed board independence reduces earnings management, 77.5% agreed audit committee effectiveness constrains manipulation, 68.8% confirmed board size affects reporting practices, and 68.8% agreed managerial ownership aligns interests with shareholders. Furthermore, audit committees and independent boards were identified as the most effective governance measures.
The study concludes that strong board independence and effective audit committees significantly reduce earnings management in Nigerian listed commercial banks. Balanced board size and managerial ownership also contribute to transparency, reinforcing governance mechanisms that support reliable financial reporting and investor confidence. Based on the findings, it was recommended that banks should improve audit committee effectiveness by appointing members with strong financial expertise, independence, and relevant professional experience. Also, audit committees should meet regularly and actively review financial reports and internal control systems to ensure transparency and compliance with accounting standards.