AUDITOR INDEPENDENCE AND FINANCIAL REPORTING QUALITY IN LISTED DEPOSIT MONEY BANKS
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Abstract
This study investigates the relationship between auditor independence and financial reporting quality (FRQ) among deposit money banks (DMBs) listed on the Nigerian Exchange (NGX). It focuses on three key auditor attributes: audit firm tenure, audit firm size, and the provision of non-audit services, and examines how they influence the credibility of financial disclosures in Nigeria’s banking sector. An ex post facto research design was adopted, using panel data extracted from the annual reports of all twelve listed DMBs for the period 2017 to 2024. Descriptive statistics and correlation analysis were applied, while multiple regression was conducted to assess the combined and individual effects of the selected auditor characteristics on FRQ, after diagnostic tests for normality, multicollinearity, and heteroskedasticity. The findings reveal that audit firm size has a positive and significant effect on FRQ, demonstrating that large and well-resourced audit firms contribute to more transparent and reliable financial statements. Non-audit services also show a strong positive and significant relationship with FRQ, suggesting that when properly regulated, such services enhance auditors’ understanding of clients’ operations and strengthen audit effectiveness. Conversely, audit firm tenure was not statistically significant, indicating that the length of the auditor–client relationship does not meaningfully affect reporting quality under Nigeria’s current regulatory framework. These results support Agency Theory by showing how independent and capable auditors reduce information asymmetry, and Signalling Theory by highlighting how high-quality audits boost market credibility. The study concludes that technical capacity, independence safeguards, and informed regulation of non-audit services are more critical to financial reporting credibility than mandatory rotation alone. It recommends that regulators such as the Financial Reporting Council of Nigeria (FRC) and the Central Bank of Nigeria (CBN) enforce independence rules, encourage the engagement of technically robust audit firms, maintain existing tenure regulations while ensuring compliance, and regulate non-audit services through clear disclosure and fee caps. These measures can enhance audit quality, improve investor confidence, and strengthen the stability of Nigeria’s banking system.
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