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Effect of Audit Partner Rotation on the Credibility of Financial Reports of Listed Companies in Nigeria

Abstract

Audit partner rotation has become an important audit governance mechanism because of its potential to strengthen auditor independence, professional scepticism, objectivity, and the credibility of financial reports. Audit partner rotation refers to the periodic replacement of the lead or engagement audit partner responsible for a particular audit engagement after a specified period, as required by applicable professional and regulatory requirements. The rotation of audit partners is intended to reduce excessive familiarity between auditors and client management, minimize the risk of impaired auditor independence, and introduce a fresh and objective perspective into the audit process. The credibility of financial reports is particularly important to investors, creditors, regulators, and other stakeholders because financial reports provide the basis for assessing corporate performance, financial position, risk, and future prospects. In Nigeria, listed companies operate within an environment characterized by increasing regulatory scrutiny, complex business transactions, technological developments, economic uncertainty, and heightened stakeholder expectations regarding financial reporting quality. Regulatory and professional institutions, including the Financial Reporting Council of Nigeria (FRCN), the Securities and Exchange Commission (SEC), the Nigerian Exchange Group (NGX), and professional accounting bodies, emphasize auditor independence, ethical conduct, and high-quality audit practices as essential components of credible financial reporting. Despite these requirements, concerns remain regarding auditor-client relationships, auditor familiarity, management influence, earnings management, inadequate audit challenge, and potential threats to auditor independence. Although audit partner rotation has been introduced as a mechanism for addressing some of these concerns, empirical evidence regarding its effect on the credibility of financial reports of listed companies in Nigeria remains limited and inconclusive. Against this background, this study investigates the effect of audit partner rotation on the credibility of financial reports of listed companies in Nigeria. The study is anchored on Agency Theory, Auditor Independence Theory, and Stakeholder Theory. Agency Theory explains that independent external auditing helps reduce conflicts of interest between corporate managers and shareholders by providing an objective assessment of financial information. Auditor Independence Theory suggests that periodic rotation of audit partners can reduce familiarity threats and strengthen professional objectivity, independence, and scepticism. Stakeholder Theory emphasizes the importance of credible financial reporting in protecting the interests of shareholders, creditors, employees, regulators, investors, and other stakeholders who rely on corporate financial information. Collectively, these theoretical perspectives provide a comprehensive framework for explaining the relationship between audit partner rotation and the credibility of financial reports of listed companies in Nigeria. The study adopts a quantitative research design using a structured questionnaire administered to audit partners, audit managers, external auditors, internal auditors, chief financial officers, financial controllers, accountants, audit committee members, company secretaries, and other professionals involved in auditing and financial reporting within selected listed companies in Nigeria. A stratified random sampling technique will be employed to ensure adequate representation of companies operating in the financial services, manufacturing, consumer goods, industrial goods, oil and gas, telecommunications, agriculture, healthcare, and other sectors listed on the Nigerian Exchange Group (NGX). Audit partner rotation will be measured using rotation frequency, compliance with mandatory rotation requirements, duration of audit partner tenure, independence after rotation, partner familiarity, fresh audit perspective, professional scepticism, and effectiveness of the rotation process, while the credibility of financial reports will be measured using financial reporting reliability, accuracy, transparency, faithful representation, completeness, compliance with International Financial Reporting Standards (IFRS), absence of material misstatements, and stakeholder confidence in reported financial information. Primary data collected from respondents will be analyzed using descriptive statistics to summarize respondents' demographic characteristics and perceptions regarding audit partner rotation and financial report credibility. Structural Equation Modeling (SEM) will be employed to examine the effect of audit partner rotation on the credibility of financial reports. The measurement model will be evaluated using Cronbach's Alpha, Composite Reliability (CR), Average Variance Extracted (AVE), and Confirmatory Factor Analysis (CFA) to establish the reliability and validity of the research instrument. Additional diagnostic tests, including multicollinearity assessment, common method bias analysis, and model fit indices such as the Comparative Fit Index (CFI), Tucker-Lewis Index (TLI), Root Mean Square Error of Approximation (RMSEA), and Standardized Root Mean Square Residual (SRMR), will be conducted to ensure the adequacy, consistency, reliability, and robustness of the structural model. The study anticipates that audit partner rotation will have a significant positive effect on the credibility of financial reports of listed companies in Nigeria. Periodic rotation of audit partners is expected to reduce excessive familiarity between auditors and management, strengthen auditor independence, improve professional scepticism, and encourage auditors to undertake more objective assessments of financial statements. Newly appointed audit partners are also expected to bring fresh perspectives, reassess significant accounting estimates, critically evaluate internal controls, and identify potential reporting irregularities that may have been overlooked during prolonged audit relationships. Consequently, audit partner rotation is expected to enhance the reliability, transparency, accuracy, and credibility of financial reports. Conversely, ineffective implementation of partner rotation, inadequate knowledge transfer, insufficient understanding of client-specific risks, or excessive reliance on the existing audit team may reduce the potential benefits of rotation. Therefore, effective audit partner rotation, supported by strong audit methodologies and appropriate regulatory oversight, is expected to contribute significantly to strengthening financial reporting credibility and stakeholder confidence in listed companies in Nigeria. This study is expected to make significant theoretical and empirical contributions to the literature on auditing, corporate governance, financial reporting, and auditor independence by providing comprehensive evidence on the relationship between audit partner rotation and the credibility of financial reports of listed companies in Nigeria. Unlike previous studies that broadly examined auditor rotation or audit quality, this research specifically evaluates audit partner rotation as a determinant of financial report credibility using primary data and Structural Equation Modeling (SEM). The findings will provide valuable insights for the Financial Reporting Council of Nigeria (FRCN), the Securities and Exchange Commission (SEC), the Nigerian Exchange Group (NGX), audit firms, listed companies, audit committees, professional accounting bodies, investors, policymakers, regulators, and academic researchers regarding the effectiveness of audit partner rotation in strengthening auditor independence and financial reporting credibility. The study will also provide evidence-based recommendations for improving audit partner rotation policies, strengthening auditor independence requirements, enhancing audit committee oversight, improving regulatory monitoring, promoting professional scepticism, and ensuring that audit partner rotation contributes effectively to reliable and credible financial reporting among listed companies in Nigeria.

Keywords: Audit partner rotation, financial report credibility, auditor independence, audit quality, listed companies, professional scepticism, financial reporting quality, corporate governance, Structural Equation Modeling (SEM), Nigeria.