CHAPTER ONE: INTRODUCTION
1.1 Background of Study
The audit of public sector organizations in Nigeria represents one of the most critical yet challenging functions in the nation’s governance architecture, serving as the primary mechanism for ensuring accountability, transparency, and proper stewardship of public funds. Public sector audit encompasses the examination of the financial statements, compliance with laws and regulations, and the economy, efficiency, and effectiveness (the “3 Es”) of government ministries, departments, agencies (MDAs), parastatals, and state-owned enterprises. Unlike private sector audit, where the primary objective is to express an opinion on the truth and fairness of financial statements for shareholders, public sector audit serves a broader accountability function: it informs citizens, through their elected representatives (the legislature and its Public Accounts Committees), about whether public funds have been collected and spent in accordance with the law, whether resources have been used efficiently and effectively, and whether programmes have achieved their intended objectives. The effectiveness of public sector audit is therefore essential for democratic governance, the prevention of corruption, and the efficient use of scarce public resources (Dye, 2007; Lienert, 2003; Premchand, 1993).
The constitutional and legal framework for public sector audit in Nigeria is established by the 1999 Constitution of the Federal Republic of Nigeria (as amended), which provides for the Office of the Auditor-General of the Federation and the Auditor-General of each state. Section 85 of the Constitution establishes that the Auditor-General shall audit the accounts of the Federal Government and report the results to the National Assembly. The Auditor-General is appointed by the President on the recommendation of the Federal Civil Service Commission, subject to confirmation by the Senate. The Constitution provides for security of tenure: the Auditor-General can only be removed by the same process as a High Court judge, protecting independence. The Auditor-General is also empowered to audit the accounts of all federal ministries, departments, agencies, parastatals, and state-owned enterprises. The audit reports are submitted to the National Assembly, which refers them to the Public Accounts Committee (PAC) for review and action (Federal Republic of Nigeria, 1999; OAuGF, 2015; Dye, 2007).
Despite this constitutional and legal framework, the public sector audit function in Nigeria faces significant problems that undermine its effectiveness, credibility, and impact. These problems have been documented in numerous academic studies, audit reports, and media investigations. The Auditor-General’s annual reports consistently identify persistent deficiencies: late submission of audit reports (delays of several years), inability to access records (some MDAs deny or delay access), inadequate staffing and funding (the Office of the Auditor-General is under-resourced), weak audit methodology (lack of risk-based planning, inadequate sampling), insufficient independence (appointment by the executive, funding from the executive), low technical competence (staff may lack skills in performance auditing, data analytics), weak follow-up on audit recommendations (MDAs ignore findings without consequence), and political interference (pressure to suppress findings). These problems result in audit reports that are delayed, incomplete, not credible, and not acted upon, undermining the entire purpose of public sector audit (Auditor-General of the Federation, various years; Okike, 2007; Adeyemi, 2010; Egbunike and Onyemachi, 2019).
The first major problem is the delay in the submission of audit reports. The 1999 Constitution requires that the Auditor-General submit audit reports within 12 months of the end of the financial year. In practice, audits are often delayed by 2, 3, or even 5 years. For example, the audit report for the 2015 financial year may be submitted in 2018 or 2019, and reviewed by the Public Accounts Committee in 2020 or later. Delays are caused by: late submission of financial statements by MDAs (some MDAs submit accounts years late), inadequate staffing (the Auditor-General has too few auditors to audit all MDAs in a timely manner), inadequate funding (audit teams cannot travel to conduct on-site audits), and management weaknesses (poor planning, lack of audit management software). Delayed audit reports have low relevance: by the time they are submitted, the issues may no longer be relevant, officials responsible may have left office, records may have been lost, and funds may have been spent (Lienert, 2003; Dye, 2007; Auditor-General of the Federation, various years).
The second major problem is the inability of the Auditor-General to access records. Some MDAs deny or delay access to their financial records, citing “classified” or “security” reasons, or simply fail to cooperate. The Auditor-General has legal authority to access all records, but lacks enforcement power to compel compliance. If records are not provided, the auditor may have to issue a disclaimer of opinion (inability to obtain sufficient appropriate evidence), which does not provide assurance to stakeholders. The problem is particularly severe in security agencies and other sensitive sectors, where the “classified” label is used to block audit access. Without access to records, audit quality is compromised, and the audit report is not credible (Okafor, 2015; Okike, 2007; Auditor-General of the Federation, various years).
The third major problem is inadequate staffing and funding of the Office of the Auditor-General. The Auditor-General’s office has been historically underfunded, with budget allocations insufficient to cover salaries, training, travel, equipment, and technology. Staff numbers are inadequate relative to the number of MDAs to be audited. Many audit positions are vacant due to recruitment freezes or unattractive remuneration. Staff retention is poor; experienced auditors leave for better-paying positions in private audit firms or other government agencies. Inadequate funding also means that audit teams cannot conduct on-site visits to all MDAs; they may rely on desk reviews of documents submitted, which is less effective. Inadequate staffing and funding directly affect audit quality and timeliness (Dye, 2007; Lienert, 2003; OAuGF, 2015).
The fourth major problem is insufficient independence of the Auditor-General. The Auditor-General is appointed by the President (the executive), not by the legislature. The Auditor-General’s budget is submitted to the Ministry of Finance (executive) for approval, not directly to the legislature. Staff are civil servants, subject to civil service rules and executive control. This creates a perception of capture: the Auditor-General may be reluctant to criticise the executive for fear of budget cuts or retaliation. The Public Accounts Committee (PAC) is supposed to provide legislative oversight, but the PAC is often weak and subject to party discipline. Independence is essential for credibility; without perceived independence, the audit report is not trusted by stakeholders (Dye, 2007; Okike, 2007; Lienert, 2003).
The fifth major problem is the limited use of performance auditing. The majority of public sector audits in Nigeria are financial audits (verifying the accuracy of financial statements) and compliance audits (verifying compliance with laws and regulations). Performance auditing (evaluating economy, efficiency, and effectiveness of programmes) is rare. This is a problem because financial and compliance audits do not answer the most important questions: Are public resources being used efficiently? Are programmes achieving their objectives? Is value for money being obtained? Performance auditing requires different skills (evaluation research, cost-benefit analysis, programme logic modelling) than financial auditing, and the Auditor-General’s office lacks these skills. Without performance auditing, the audit report does not provide stakeholders with information about programme effectiveness (INTOSAI, 2013; Dye, 2007; Adeyemi, 2010).
The sixth major problem is weak follow-up on audit recommendations. The audit report is not the end of the process; it is the beginning. Management (the audited MDA) is expected to take corrective action in response to audit findings. The Auditor-General is expected to follow up to ensure that recommendations are implemented. The Public Accounts Committee is expected to hold hearings, summon accounting officers, and recommend sanctions. In practice, follow-up is weak: many audit recommendations are not implemented, and the same findings appear year after year in successive audit reports. There are no consequences for ignoring audit recommendations: no surcharges, no suspensions, no prosecutions. Weak follow-up undermines the entire audit function; if recommendations are not acted upon, the audit has no impact (Dye, 2007; Lienert, 2003; Auditor-General of the Federation, various years).
The seventh major problem is political interference. Auditors may be pressured by senior government officials to suppress findings that are politically sensitive (e.g., corruption involving senior politicians or their associates). The threat of budget cuts, transfers, or dismissal may be used to intimidate auditors. The Public Accounts Committee may also be subject to party discipline; committee members may be reluctant to criticise ministers or officials from their own party. Political interference undermines the independence and credibility of the audit function, and allows corruption to continue undetected and unpunished (Okike, 2007; Dye, 2007; Okafor, 2015).
Strategies for the minimisation of these audit problems have been proposed in the academic and professional literature, and some have been implemented in other countries. These strategies include: (1) strengthening the independence of the Auditor-General (appointment by the legislature, budget by the legislature, tenure protection); (2) increasing funding and staffing (adequate budget allocation, recruitment of qualified staff, competitive remuneration, training in performance auditing and data analytics); (3) improving audit methodology (risk-based audit planning, use of technology (computer-assisted audit techniques, CAATs), adoption of international standards (ISSAIs)); (4) mandating timely submission of financial statements by MDAs (with sanctions for late submission); (5) strengthening the Public Accounts Committee (expert staff, resources, cross-party composition, training); (6) establishing a follow-up mechanism (tracking implementation of audit recommendations, public reporting on follow-up); (7) protecting whistleblowers (encouraging auditors to report wrongdoing without fear of retaliation); (8) involving civil society (publishing audit reports, engaging civil society in follow-up); (9) performance-based budgeting (linking budget allocations to audit outcomes); and (10) administrative sanctions (surcharge of accounting officers who fail to implement audit recommendations) (Dye, 2007; Lienert, 2003; INTOSAI, 2013; IFAC, 2019).
1.2 Statement of Problems
Despite the constitutional and legal framework for public sector audit in Nigeria, the audit function is plagued by persistent problems that undermine its effectiveness, credibility, and impact. Audit reports are delayed (often by several years), incomplete (lack coverage of all MDAs), not credible (due to perceptions of capture and inadequate audit evidence), and not acted upon (weak follow-up on recommendations). The same problems are identified year after year in successive audit reports, indicating that the audit function is not achieving its objective of improving financial management and accountability. The gap between the intended purpose of public sector audit (to ensure accountability and improve performance) and the actual outcomes (delayed, low-quality, ineffective audits) constitutes the central problem addressed by this study (Auditor-General of the Federation, various years; Dye, 2007; Okike, 2007; Adeyemi, 2010).
The first critical problem concerns the independence of the Auditor-General. The Auditor-General is appointed by the President (executive), not by the legislature. The budget is submitted to the Ministry of Finance (executive) for approval. Staff are civil servants subject to executive control. This structural dependence creates a conflict of interest: the Auditor-General audits the executive but depends on the executive for appointment, funding, and staffing. The perception of capture undermines the credibility of audit reports, and the reality of dependence may lead to self-censorship (avoiding sensitive findings). The problem is that without genuine independence, the audit function cannot provide the objective assurance that stakeholders need (Dye, 2007; Lienert, 2003; Okike, 2007).
The second critical problem concerns the inadequate funding and staffing of the Office of the Auditor-General. The Auditor-General’s office is underfunded and understaffed relative to the size and complexity of the public sector. There are not enough auditors to audit all MDAs in a timely manner. Staff lack training in modern audit techniques (risk-based auditing, data analytics, performance auditing). Low remuneration leads to high turnover, as experienced auditors leave for better-paying positions. Inadequate funding means that audit teams cannot travel to conduct on-site audits at remote locations; they rely on desk reviews, which are less effective. The problem is that without adequate resources, the Auditor-General cannot conduct timely, high-quality audits, and the audit function is compromised (Dye, 2007; OAuGF, 2015; Egbunike and Onyemachi, 2019).
The third critical problem concerns the timeliness of audit reports. The Constitution requires that audit reports be submitted within 12 months of the end of the financial year. In practice, audits are delayed by several years. Delays are caused by: late submission of financial statements by MDAs, inadequate staffing, inadequate funding, poor planning, and lack of audit management software. Delayed audit reports have low relevance: by the time they are submitted, the issues may no longer be relevant, officials may have left office, records may have been lost, and funds may have been spent. The problem is that delayed reports undermine the usefulness of the audit function (Lienert, 2003; Dye, 2007; Auditor-General of the Federation, various years).
The fourth critical problem concerns the limited use of performance auditing. The majority of public sector audits in Nigeria are financial and compliance audits. Performance auditing (evaluating economy, efficiency, effectiveness) is rare. Performance auditing is essential for answering the question: Are public resources being used to achieve value for money? Without performance auditing, the audit report does not provide stakeholders with information about whether programmes are achieving their objectives, whether resources are being used efficiently, or whether there is waste. The problem is that the Auditor-General’s office lacks the skills, methodology, and resources for performance auditing (INTOSAI, 2013; Dye, 2007; Adeyemi, 2010).
The fifth critical problem concerns the weak follow-up on audit recommendations. Audit reports are submitted to the Public Accounts Committee, which holds hearings and makes recommendations. However, follow-up is weak: many audit recommendations are not implemented, and the same findings appear year after year. There are no consequences for ignoring audit recommendations: no surcharges, no suspensions, no prosecutions. The problem is that without enforcement, the audit function has no impact; it is a ritual of verification with no teeth (Dye, 2007; Lienert, 2003; Auditor-General of the Federation, various years).
1.3 Aim of the Study
The specific aim of this research work is to critically examine strategies for the minimization of audit problems in the public sector in Nigeria, with a particular focus on identifying the root causes of audit problems (delays, inadequate resources, independence issues, weak follow-up), evaluating the effectiveness of current and proposed strategies for addressing these problems, and developing a comprehensive framework of recommendations for strengthening the public sector audit function in Nigeria.
1.4 Objectives of the Study
1. To identify and analyse the key audit problems in the Nigerian public sector, including delays in audit report submission, inadequate funding and staffing of the Office of the Auditor-General, insufficient independence, limited use of performance auditing, weak follow-up on audit recommendations, and political interference.
2. To examine the root causes of these audit problems, including structural factors (appointment and funding mechanisms), institutional factors (weak Public Accounts Committee, civil service rules), capacity factors (staffing, training, technology), and political factors (interference, lack of political will).
3. To evaluate the effectiveness of current strategies for addressing audit problems, including the implementation of risk-based audit planning, adoption of international auditing standards (ISSAIs), use of information technology, and strengthening of the Public Accounts Committee.
4. To assess the potential effectiveness of proposed strategies for minimising audit problems, including legislative appointment of the Auditor-General, independent budgeting, performance auditing capacity building, mandatory implementation of audit recommendations, sanctions for non-compliance, and civil society engagement.
5. To develop a comprehensive framework of recommendations for minimising audit problems in the Nigerian public sector, integrating legal, institutional, capacity, and political dimensions.
1.5 Research Questions
1. What are the key audit problems in the Nigerian public sector, and what are their root causes?
2. How effective are current strategies (e.g., risk-based audit planning, ISSAI adoption, IT use, PAC strengthening) in minimising audit problems in the Nigerian public sector?
3. What is the potential effectiveness of proposed strategies (e.g., legislative appointment of Auditor-General, independent budgeting, performance auditing capacity building, mandatory implementation of audit recommendations, sanctions, civil society engagement) in minimising audit problems?
4. What are the barriers to implementing these strategies in the Nigerian context, and how can these barriers be overcome?
5. What comprehensive framework of recommendations can be developed to minimise audit problems in the Nigerian public sector?
1.6 Research Hypotheses
Hypothesis 1
H0₁: The independence of the Auditor-General (appointment by executive, budget by executive, civil service staffing) has no significant effect on the credibility and effectiveness of public sector audit in Nigeria.
H1₁: The independence of the Auditor-General has a significant effect on the credibility and effectiveness of public sector audit in Nigeria.
Hypothesis 2
H0₂: Inadequate funding and staffing have no significant effect on the timeliness and quality of public sector audit reports in Nigeria.
H1₂: Inadequate funding and staffing have a significant effect on the timeliness and quality of public sector audit reports in Nigeria.
Hypothesis 3
H0₃: The use of performance auditing has no significant effect on the usefulness of public sector audit reports for stakeholders (legislature, public, civil society).
H1₃: The use of performance auditing has a significant effect on the usefulness of public sector audit reports for stakeholders.
Hypothesis 4
H0₄: Weak follow-up on audit recommendations has no significant effect on the impact of public sector audit (implementation of corrective actions, improved financial management).
H1₄: Weak follow-up on audit recommendations has a significant effect on the impact of public sector audit.
Hypothesis 5
H0₅: The proposed strategies (legislative appointment, independent budgeting, performance auditing capacity building, mandatory implementation, sanctions, civil society engagement) would not significantly minimise audit problems in the Nigerian public sector.
H1₅: The proposed strategies would significantly minimise audit problems in the Nigerian public sector.
1.7 Justification of the Study
This study is justified by the critical importance of public sector audit for accountability, transparency, and good governance in Nigeria. Public sector audit is the primary mechanism for holding the executive accountable to the legislature and the public for the use of public funds. When audit problems are not addressed, the audit function is ineffective, leading to waste, corruption, and poor service delivery. The Nigerian public loses billions of naira annually to financial mismanagement that could have been prevented or detected by effective audit. Understanding the strategies for minimising audit problems is therefore essential for improving governance and reducing corruption. The study is further justified by the limited empirical research on strategies for minimising audit problems in the Nigerian public sector. While there is extensive literature on public sector audit in developed economies, there is limited research on the specific problems facing the Nigerian Supreme Audit Institution (Office of the Auditor-General) and on context-appropriate strategies for addressing these problems. This study addresses this gap by providing a comprehensive analysis of audit problems and strategies in the Nigerian context (Dye, 2007; Lienert, 2003; Okike, 2007; Okafor, 2015).
1.8 Significance of the Study
This study makes significant contributions to multiple stakeholder groups with interests in public sector accountability in Nigeria. For the Office of the Auditor-General of the Federation, the study provides evidence-based recommendations for improving audit processes, strengthening independence, increasing resources, and enhancing audit quality. For the National Assembly (especially the Public Accounts Committee, Appropriations Committee, Finance Committee), the study provides insights into how legislative oversight can be strengthened to support the audit function and ensure follow-up on audit recommendations. For the Executive (President, Minister of Finance, Accountant-General), the study highlights the importance of non-interference, timely provision of records, and implementation of audit recommendations. For civil society organisations (e.g., NEITI, BudgIT, CSOs), the study provides a framework for monitoring audit quality and advocating for reforms. For international development partners (World Bank, IMF, DFID, EU), the study provides country-specific evidence to inform technical assistance and capacity-building programmes for public financial management and audit. For academic researchers, the study contributes to the literature on public sector auditing, supreme audit institutions, and accountability in developing economies. For the Nigerian public, the study promotes transparency and accountability by identifying strategies to improve the audit function, which ultimately protects public funds (Dye, 2007; Lienert, 2003; INTOSAI, 2013; Okike, 2007).
1.9 Scope of the Study
The scope of this study is delimited to an examination of strategies for the minimisation of audit problems in the public sector in Nigeria. The study focuses specifically on the federal level (Office of the Auditor-General of the Federation and federal MDAs), though state-level issues are discussed for context. The study examines audit problems including: delays in audit report submission, inadequate funding and staffing of the Office of the Auditor-General, insufficient independence, limited use of performance auditing, weak follow-up on audit recommendations, and political interference. The study examines current strategies (risk-based audit planning, ISSAI adoption, IT use, PAC strengthening) and proposed strategies (legislative appointment of Auditor-General, independent budgeting, performance auditing capacity building, mandatory implementation of audit recommendations, sanctions, civil society engagement). The study does not include a detailed analysis of internal audit (within MDAs) unless related to external audit. The study does not include a detailed analysis of audit of state-owned enterprises (though they are part of the Auditor-General’s mandate). The study is based on secondary data (audit reports, academic literature, regulatory documents, media reports, international standards) and does not include primary data collection (surveys, interviews) from auditors or PAC members. The study is a critical analysis (theoretical and conceptual) and does not include empirical testing of hypotheses.
1.10 Definition of Terms
Public Sector Audit: The examination of the financial statements, compliance with laws and regulations, and the economy, efficiency, and effectiveness of public sector organizations (government ministries, departments, agencies, parastatals, state-owned enterprises) by the Auditor-General (INTOSAI, 2013; Dye, 2007).
Auditor-General of the Federation: The head of the Supreme Audit Institution (SAI) of Nigeria, appointed by the President with confirmation by the Senate, responsible for auditing federal government accounts and reporting to the National Assembly (Federal Republic of Nigeria, 1999; OAuGF, 2015).
Supreme Audit Institution (SAI) : The independent public body responsible for auditing the accounts of the government; in Nigeria, the Office of the Auditor-General of the Federation (OAuGF) (INTOSAI, 2013; Dye, 2007).
Financial Audit: An audit that examines whether the financial statements present a true and fair view of the financial position and performance of the entity in accordance with applicable accounting standards (INTOSAI, 2019; Dye, 2007).
Compliance Audit: An audit that examines whether the entity has complied with laws, regulations, and other applicable rules (e.g., appropriation acts, procurement regulations, financial regulations) (INTOSAI, 2013; Lienert, 2003).
Performance Audit: An audit that examines whether the entity has used resources economically (minimising cost), efficiently (maximising output for given input), and effectively (achieving objectives) – the “3 Es” (INTOSAI, 2013; Dye, 2007).
Public Accounts Committee (PAC) : A committee of the National Assembly (House of Representatives and Senate) responsible for reviewing the Auditor-General’s report, summoning accounting officers to explain audit queries, and recommending sanctions (Federal Republic of Nigeria, 1999; Dye, 2007).
Audit Problem: A challenge or deficiency that impairs the effectiveness, credibility, timeliness, or impact of public sector audit, including delays, inadequate resources, independence issues, limited performance auditing, weak follow-up, and political interference (Dye, 2007; Lienert, 2003; Okike, 2007).
Independence (of the Auditor-General) : The freedom of the Auditor-General from control or influence by the executive (or other audited entities), including independence in appointment, tenure, budgeting, and audit reporting (INTOSAI, 2013; Dye, 2007).
Audit Recommendation: A suggestion for corrective action (e.g., strengthening internal controls, recovering misappropriated funds, disciplining responsible officials) issued by the Auditor-General (INTOSAI, 2013; OAuGF, 2015).
Follow-up (of Audit Recommendations) : The process by which the Auditor-General and the Public Accounts Committee track whether management (the audited entity) has implemented audit recommendations (Dye, 2007; Lienert, 2003).
Accounting Officer: The head of a ministry, department, or agency (permanent secretary, director-general, chief executive officer) responsible for the financial management of that entity and accountable to the PAC for audit findings (Federal Republic of Nigeria, 1999; Lienert, 2003).
Surcharge: A financial penalty imposed on an accounting officer or other official for financial irregularity, requiring the official to repay the amount lost to the government (Federal Republic of Nigeria, 1999; Lienert, 2003).
ISSAI: International Standards of Supreme Audit Institutions, issued by INTOSAI, providing a framework for public sector auditing (INTOSAI, 2013).
Risk-Based Audit Planning: An audit planning approach that allocates audit resources to areas of highest risk (of material misstatement, non-compliance, inefficiency, ineffectiveness), rather than auditing all areas equally (INTOSAI, 2013; IFAC, 2019).
Computer-Assisted Audit Techniques (CAATs) : The use of information technology (software, data analytics) to perform audit procedures, including data extraction, analysis, and testing (IFAC, 2019).
CHAPTER TWO: LITERATURE REVIEW
2.1 Theoretical Review
The theoretical foundation for examining strategies for the minimization of audit problems in the public sector in Nigeria draws from multiple theoretical perspectives in public administration, auditing, political economy, and institutional theory. This section critically reviews the principal theories informing understanding of public sector audit effectiveness, including the agency theory, the stewardship theory, the public interest theory of auditing, the institutional theory of audit quality, the new public management theory, and the theory of audit independence.
2.1.1 Agency Theory
Agency theory, developed by Jensen and Meckling (1976) and applied to the public sector by Moe (1984) and others, provides a foundational framework for understanding the role of public sector audit in mitigating agency problems. The theory posits that in the public sector, there is a chain of agency relationships: citizens (principals) delegate authority to the legislature (agents); the legislature delegates authority to the executive (agents); the executive delegates authority to ministries, departments, and agencies (MDAs) (agents). At each step, there is information asymmetry (the agent has more information than the principal) and potential for diverging interests (the agent may pursue his/her own interests at the expense of the principal). Public sector audit serves as a monitoring mechanism that reduces information asymmetry and constrains agent opportunism. The Auditor-General is an agent of the legislature, appointed to monitor the executive on behalf of the legislature (Jensen and Meckling, 1976; Moe, 1984; Baiman, 1990).
Agency theory has important implications for understanding audit problems in the Nigerian public sector. The theory predicts that audit problems arise when the monitoring mechanism fails due to: (1) weak independence of the monitor (Auditor-General) from the monitored (executive); (2) inadequate resources for monitoring (funding, staffing, technology); (3) weak accountability of the monitor (the Auditor-General not answerable to the legislature); (4) lack of consequences for agent non-compliance (weak follow-up on audit recommendations); and (5) information asymmetry (executive can hide information from the Auditor-General). The audit problems documented in Nigeria (delays, inadequate resources, independence issues, weak follow-up) are consistent with agency theory predictions of monitoring failure. The theory suggests that strategies to minimise audit problems should focus on strengthening the independence of the monitor, increasing resources for monitoring, and creating consequences for non-compliance (Jensen and Meckling, 1976; Moe, 1984; Dye, 2007).
Agency theory also addresses the design of optimal contracts (incentive structures) to align agent behaviour with principal interests. In the public sector audit context, the “contract” between the legislature and the Auditor-General should provide incentives for the Auditor-General to perform high-quality audits (e.g., tenure protection, adequate compensation, budget autonomy) and consequences for poor performance (e.g., removal for cause, performance review). The current Nigerian framework (appointment by executive, budget by executive, civil service staffing) provides weak incentives for high performance and weak consequences for poor performance. Agency theory suggests that legislative appointment, independent budgeting, and performance-based tenure would create better incentives (Moe, 1984; Dye, 2007).
The application of agency theory to the Nigerian public sector suggests that strategies for minimising audit problems must address the agency problems at multiple levels. At the citizen-legislature level: citizens must demand accountability from their representatives (through elections, civil society pressure). At the legislature-executive level: the Public Accounts Committee must be strengthened to hold the executive accountable. At the executive-MDA level: accounting officers must be held personally responsible for audit findings (surcharge, suspension, prosecution). At the Auditor-General level: the Auditor-General must be independent and adequately resourced. Agency theory suggests that addressing audit problems requires a systemic approach, not just tinkering with one part of the chain (Moe, 1984; Dye, 2007; Lienert, 2003).
2.1.2 Stewardship Theory
Stewardship theory, developed by Davis, Schoorman, and Donaldson (1997), provides an alternative framework to agency theory for understanding public sector audit. Unlike agency theory, which assumes that agents are self-interested and need to be monitored, stewardship theory assumes that public officials are motivated by intrinsic factors (public service, professional pride, ethical values) and will act as responsible stewards of public resources even without intensive monitoring. In the public sector audit context, stewardship theory suggests that the primary role of audit is not to control untrustworthy managers (agency perspective) but to enable responsible stewards to demonstrate their accountability to stakeholders. The audit report provides assurance that the steward has fulfilled his or her responsibilities, and provides feedback for improvement. Audit problems arise not because stewards are untrustworthy, but because the institutional environment (lack of resources, weak capacity, poor systems) prevents them from performing their stewardship role effectively (Davis, Schoorman, and Donaldson, 1997; Donaldson and Davis, 1991; Muth and Donaldson, 1998).
Stewardship theory has important implications for understanding audit problems in the Nigerian public sector. The theory suggests that many audit problems (delays, inadequate resources, weak capacity) are not due to lack of will or corruption, but due to systemic constraints: inadequate budget allocation to the Auditor-General’s office, civil service rules that prevent recruitment of qualified staff, lack of training opportunities, outdated technology, and poor coordination between MDAs and the Auditor-General. Stewardship theory suggests that strategies for minimising audit problems should focus on enabling stewards (auditors) to do their jobs effectively: increase funding, reform civil service rules to allow competitive recruitment and retention, invest in training and technology, and improve processes. The theory also suggests that an adversarial, blame-focused audit culture (agency perspective) may be counterproductive, creating defensiveness and resistance rather than collaboration and improvement (Davis et al., 1997; Sundaramurthy and Lewis, 2003).
Stewardship theory also suggests that the relationship between the Auditor-General and audited entities (MDAs) should be collaborative rather than adversarial. Instead of treating MDAs as potential adversaries (who need to be caught and punished), the Auditor-General should treat them as stewards who need support to improve. This could involve: providing training and guidance on financial management, conducting pre-audit consultations, offering recommendations for capacity building, and recognising good performance. A collaborative approach may lead to greater acceptance of audit findings and more effective implementation of recommendations. However, the theory also acknowledges that collaboration requires trust; if MDAs are not trustworthy (corrupt, negligent), a more enforcement-oriented approach is needed. The appropriate approach depends on the level of trustworthiness of the audited entity (Sundaramurthy and Lewis, 2003; Dye, 2007).
The application of stewardship theory to the Nigerian public sector suggests that the Auditor-General’s office should adopt a balanced approach: collaborative for most MDAs (assuming good faith), but enforcement-oriented for those with a history of non-compliance or corruption. The current adversarial culture (focus on finding faults, issuing queries) may not be optimal for improving financial management. Stewardship theory suggests that strategies for minimising audit problems should include capacity building for MDAs (training in financial management, procurement, record-keeping) as well as strengthening the Auditor-General’s office. The Public Accounts Committee should also adopt a constructive approach (seeking solutions, not just assigning blame) while maintaining the power to sanction when necessary (Davis et al., 1997; Dye, 2007).
2.1.3 Public Interest Theory of Auditing
The public interest theory of auditing, rooted in the professional ethics literature (Mautz and Sharaf, 1961; Flint, 1988), posits that the auditing profession (including public sector audit) exists to serve the public interest by enhancing the credibility of financial information. In the public sector, the Auditor-General serves the public interest by providing independent assurance that public funds have been used properly and effectively. The Auditor-General’s loyalty is to the public (the citizenry), not to the executive (the audited entity), and not to the legislature (though the legislature is the representative of the public). The Auditor-General should act in the public interest, even if that means criticising the executive or the legislature. The public interest theory provides the normative justification for audit independence: the Auditor-General must be independent of the executive to serve the public interest (Mautz and Sharaf, 1961; Flint, 1988; Sikka, 2009).
The public interest theory has important implications for understanding audit problems in the Nigerian public sector. The theory suggests that audit problems (delays, inadequate resources, independence issues, weak follow-up) are not merely technical or administrative problems; they are threats to the public interest. When the Auditor-General is appointed by the executive, funded by the executive, and staffed by civil servants, the public interest is compromised because the Auditor-General may not be willing to criticise the executive. When audit reports are delayed, the public interest is harmed because citizens cannot hold the executive accountable in a timely manner. When audit recommendations are not implemented, the public interest is harmed because the same problems recur year after year. The theory suggests that strategies for minimising audit problems must be evaluated by whether they serve the public interest (Mautz and Sharaf, 1961; Flint, 1988; Dye, 2007).
The public interest theory also emphasises the importance of transparency. The Auditor-General should publish audit reports promptly and make them accessible to the public (not just to the legislature). Transparency enables citizens and civil society to scrutinise audit findings and hold the executive and legislature accountable. The theory suggests that strategies for minimising audit problems should include: timely publication of audit reports (with summaries in plain language), dissemination through multiple channels (newspapers, websites, social media), and engagement with civil society (press conferences, public hearings). In Nigeria, audit reports are often not published or are published with long delays; the public is not aware of audit findings. This undermines the public interest (Flint, 1988; Dye, 2007; Okafor, 2015).
The application of public interest theory to the Nigerian public sector suggests that the Office of the Auditor-General should adopt a public interest orientation in all its activities. This means: prioritising audits that are most important to the public (e.g., health, education, infrastructure), communicating findings to the public in accessible formats, and advocating for the implementation of recommendations. The Auditor-General should also resist pressure from the executive to suppress findings, even if it means confrontation. The theory suggests that the Auditor-General should be accountable to the public, not just to the legislature. Strategies to strengthen public accountability include: public hearings on audit reports, citizen participation in audit planning, and civil society monitoring of audit implementation (Mautz and Sharaf, 1961; Flint, 1988; Dye, 2007).
2.1.4 Institutional Theory of Audit Quality
The institutional theory of audit quality, developed by Power (1997), Humphrey (1991), and others, provides a framework for understanding how the institutional environment (laws, regulations, norms, culture, resources) affects audit quality. The theory posits that audit quality is not determined solely by the technical competence of auditors or the rigour of audit procedures; it is also influenced by the institutional context: the legal framework (independence requirements, liability), the regulatory framework (quality reviews, enforcement), the professional environment (ethical standards, continuing education), the political environment (pressure from the executive, legislative support), and the resource environment (funding, staffing, technology). In the public sector, the institutional environment of the Supreme Audit Institution (SAI) is critical for audit quality (Power, 1997; Humphrey, 1991; Sikka, 2009).
The institutional theory of audit quality has important implications for understanding audit problems in the Nigerian public sector. The theory suggests that audit problems are not due to individual failings (lazy auditors, corrupt officials) but to weaknesses in the institutional environment. The Auditor-General is appointed by the executive (institutional weakness), funded by the executive (institutional weakness), staffed by civil servants (institutional weakness), and subject to weak legislative oversight (institutional weakness). The Public Accounts Committee lacks expert staff and resources (institutional weakness). The legal framework does not provide for mandatory implementation of audit recommendations or sanctions for non-compliance (institutional weakness). These institutional weaknesses produce audit problems, regardless of the efforts of individual auditors. Strategies to minimise audit problems must therefore address the institutional environment, not just individual behaviour (Power, 1997; Sikka, 2009; Dye, 2007).
Institutional theory also emphasises the role of international institutions (INTOSAI, IFAC, World Bank, IMF) in shaping national audit institutions. Nigeria is a member of INTOSAI (International Organization of Supreme Audit Institutions) and has adopted the ISSAI (International Standards of Supreme Audit Institutions) framework. These international standards provide guidance on independence, audit quality, reporting, and ethics. However, adoption of standards does not guarantee implementation; Nigeria must also strengthen the institutional capacity to apply the standards. Institutional theory suggests that strategies for minimising audit problems should include: aligning Nigerian law with INTOSAI principles (e.g., independence in law and in practice), establishing an external quality review mechanism (peer review by other SAIs), and strengthening the professional development of auditors (training in ISSAIs, continuing professional education) (INTOSAI, 2013; Power, 1997; Dye, 2007).
The application of institutional theory to the Nigerian public sector suggests that a comprehensive institutional reform is needed, not piecemeal interventions. This includes: amending the Constitution to provide for legislative appointment and independent budgeting of the Auditor-General; reforming civil service rules to allow the Auditor-General to recruit, remunerate, and retain qualified staff independently; establishing an independent audit quality review mechanism; strengthening the Public Accounts Committee with expert staff and resources; enacting legislation that mandates implementation of audit recommendations and provides sanctions for non-compliance; and investing in technology (computer-assisted audit techniques, data analytics) to improve audit efficiency and effectiveness. Institutional reform requires political will and sustained commitment from the executive, legislature, and civil society (Power, 1997; Dye, 2007; Lienert, 2003).
2.1.5 New Public Management Theory
New Public Management (NPM) theory, developed by Hood (1991, 1995), Osborne and Gaebler (1992), and others, provides a framework for understanding public sector reforms aimed at improving efficiency, effectiveness, and accountability. NPM emphasises: (1) managerial autonomy (giving managers freedom to manage); (2) performance measurement (measuring outputs and outcomes, not just inputs); (3) competition (introducing market mechanisms); (4) customer focus (citizens as customers); (5) results orientation (accountability for results); and (6) transparency (public disclosure of performance information). In the public sector audit context, NPM suggests that audit should focus not only on compliance (inputs) but also on performance (outputs, outcomes). Audit should evaluate whether programmes are achieving their objectives efficiently and effectively (performance auditing). Audit reports should be accessible to citizens (customer focus). Audited entities should be held accountable for results, not just for following rules (Hood, 1991, 1995; Osborne and Gaebler, 1992; Pollitt and Bouckaert, 2017).
NPM theory has important implications for understanding audit problems in the Nigerian public sector. The theory suggests that the traditional focus on financial and compliance auditing (inputs) is insufficient; Nigeria needs to develop performance auditing capacity. Performance auditing answers the questions: Are public resources being used efficiently? Are programmes achieving their objectives? Is value for money being obtained? Without performance auditing, the audit report does not provide stakeholders with information about the effectiveness of government programmes. NPM also emphasises transparency: audit reports should be published and accessible to citizens. NPM suggests that citizen participation in the audit process (e.g., public hearings, citizen feedback) can improve accountability (Hood, 1991; Dye, 2007; INTOSAI, 2013).
NPM also emphasises managerial autonomy. The Auditor-General should have autonomy to manage the audit process, including: deciding which audits to conduct (risk-based planning), allocating resources (budget autonomy), and recruiting staff (personnel autonomy). The current civil service rules (which apply to the Auditor-General’s office) constrain this autonomy, leading to inefficiencies and delays. NPM suggests that the Auditor-General’s office should be exempted from civil service rules (like the Federal Inland Revenue Service, FIRS) to allow it to operate more efficiently. NPM also suggests performance-based budgeting for the Auditor-General’s office: budget allocations should be linked to performance indicators (timely submission of reports, number of audits completed, implementation of recommendations) (Hood, 1995; Dye, 2007; Lienert, 2003).
The application of NPM theory to the Nigerian public sector suggests that strategies for minimising audit problems should include: (1) developing performance auditing capacity (training auditors in evaluation methods, cost-benefit analysis, programme logic); (2) publishing audit reports in accessible formats (summaries, infographics, local languages); (3) engaging citizens in the audit process (public hearings, citizen feedback); (4) granting managerial autonomy to the Auditor-General (exemption from civil service rules); (5) performance-based budgeting for the Auditor-General’s office; and (6) strengthening the Public Accounts Committee to focus on results, not just compliance. NPM also suggests that the Auditor-General should benchmark against best practices in other countries (e.g., peer review by other SAIs) (Hood, 1995; Dye, 2007; Osborne and Gaebler, 1992).
2.1.6 Theory of Audit Independence
The theory of audit independence, developed in the auditing literature (DeAngelo, 1981; Watts and Zimmerman, 1983; Mautz and Sharaf, 1961), provides a framework for understanding the conditions necessary for auditors to resist client pressure and provide objective opinions. Independence has two dimensions: independence in fact (actual independence: the auditor’s mental state, freedom from bias) and independence in appearance (perceived independence: external stakeholders’ perception that the auditor is independent). Both are necessary for audit credibility. Independence in fact is threatened by: self-interest (economic dependence on the client), self-review (auditing own work), advocacy (promoting client’s position), familiarity (close relationship with client), and intimidation (threats from client). Independence in appearance is threatened by any factor that could cause a reasonable observer to doubt the auditor’s independence, even if actual independence is not compromised (DeAngelo, 1981; Watts and Zimmerman, 1983; Mautz and Sharaf, 1961).
The theory of audit independence has important implications for understanding audit problems in the Nigerian public sector. The Auditor-General faces threats to independence in fact: economic dependence on the executive (budget approval), familiarity (close relationships with senior officials), intimidation (threat of budget cuts, transfers, or removal). The Auditor-General faces threats to independence in appearance: appointment by the executive, budget by the executive, civil service staffing, and lack of legislative oversight. These independence threats undermine the credibility of the audit report: stakeholders may not trust that the Auditor-General is truly independent. Strategies to minimise audit problems must address both independence in fact and independence in appearance (DeAngelo, 1981; Dye, 2007; Okike, 2007).
The theory of audit independence suggests several mechanisms to protect independence. Structural mechanisms: appointment by the legislature (not the executive), budget approval by the legislature, tenure protection (removal only for cause by legislature), prohibition of non-audit services (not relevant for public sector), and mandatory rotation (of audit firms, though less relevant for SAI). Procedural mechanisms: audit committees (to oversee the audit process), peer review (by other SAIs), external quality assurance, and public reporting. In the Nigerian context, structural reforms are urgently needed: legislative appointment of the Auditor-General, legislative approval of the budget, and removal of the Auditor-General’s office from civil service rules. Procedural reforms: strengthening the Public Accounts Committee (to provide oversight of the Auditor-General), establishing a peer review mechanism (e.g., review by another African SAI), and requiring the Auditor-General to appear before the PAC annually to report on audit activities (DeAngelo, 1981; Mautz and Sharaf, 1961; Dye, 2007).
The application of independence theory to the Nigerian public sector suggests that the Auditor-General should also implement internal safeguards: training auditors on independence requirements (e.g., avoiding personal relationships with audited entities), rotating audit teams (to prevent familiarity), and establishing an ethics committee to review independence issues. The Auditor-General should also disclose any threats to independence and the safeguards in place. Transparency about independence enhances credibility (perceived independence). The theory suggests that independence is not an absolute state but a continuum; the goal is to minimise threats and implement safeguards to an acceptable level (DeAngelo, 1981; Mautz and Sharaf, 1961; Dye, 2007).
2.2 Conceptual Framework
The conceptual framework for this study specifies the relationship between audit problems (dependent variable) and strategies for minimisation (independent variable), with moderating and intervening variables that affect this relationship. The framework identifies the key audit problems, the strategies proposed to address them, and the factors that influence the effectiveness of these strategies.
2.2.1 Independent Variables: Strategies for Minimisation
The first category of strategies is independence-enhancing strategies, including: legislative appointment of the Auditor-General (appointment by the National Assembly, not the President); legislative approval of the Auditor-General’s budget (budget submitted directly to the National Assembly, not through the Ministry of Finance); tenure protection (removal only for cause, by the National Assembly); exemption of the Auditor-General’s office from civil service rules (autonomy in recruitment, remuneration, and promotion); and prohibition of interference (making it a criminal offence for any person to interfere with the Auditor-General’s work) (Dye, 2007; INTOSAI, 2013; Okike, 2007).
The second category is resource-enhancing strategies, including: adequate budget allocation (sufficient funding for salaries, training, travel, equipment, technology); competitive remuneration (salaries comparable to private sector or other professional bodies); recruitment of qualified staff (chartered accountants, certified internal auditors, performance audit specialists); training and professional development (ISSAI training, performance auditing, data analytics, CAATs); and technology investment (audit management software, data analytics tools, CAATs) (Dye, 2007; Lienert, 2003; OAuGF, 2015).
The third category is process-improvement strategies, including: risk-based audit planning (allocating resources to high-risk areas); adoption of international standards (ISSAIs); use of computer-assisted audit techniques (CAATs, data analytics); performance auditing (evaluating economy, efficiency, effectiveness); early engagement (communicating with MDAs before audits to clarify expectations); and timely reporting (submitting audit reports within constitutional deadlines) (INTOSAI, 2013; IFAC, 2019; Dye, 2007).
The fourth category is accountability and enforcement strategies, including: strengthening the Public Accounts Committee (expert staff, resources, cross-party composition); mandatory implementation of audit recommendations (legal requirement for MDAs to implement recommendations within a specified timeframe); sanctions for non-compliance (surcharge, suspension, prosecution, dismissal); follow-up mechanism (the Auditor-General tracks implementation and reports to PAC); publication of audit reports (public access to reports in accessible formats); and civil society engagement (involving CSOs in monitoring implementation) (Dye, 2007; Lienert, 2003; Okike, 2007).
The fifth category is capacity-building strategies, including: training of MDAs on financial management (to improve the quality of financial statements and reduce audit queries); pre-audit consultations (auditors meet with MDAs before audits to clarify expectations); post-audit feedback (auditors provide constructive feedback to MDAs); and knowledge sharing (best practices disseminated to all MDAs) (Stewardship theory; Davis et al., 1997; Dye, 2007).
2.2.2 Dependent Variable: Audit Problems
The dependent variable is the minimisation of audit problems, measured by improvements in: timeliness (audit reports submitted within 12 months), completeness (coverage of all MDAs), credibility (independence in fact and appearance), usefulness (performance auditing, relevant findings), and impact (implementation of audit recommendations, improved financial management). Success is defined as a significant reduction in audit problems compared to the baseline (current state) (Dye, 2007; Lienert, 2003; Auditor-General of the Federation, various years).
2.2.3 Moderating and Intervening Variables
The relationship between strategies and outcomes is moderated by several variables. Political will: the willingness of the executive and legislature to implement reforms; without political will, strategies will fail. Civil society pressure: the strength of civil society advocacy for audit reforms; stronger pressure increases the likelihood of implementation. Donor support: technical and financial assistance from international partners (World Bank, IMF, DFID) can facilitate reforms. Judicial independence: the ability of the courts to enforce audit-related laws (e.g., surcharge orders) without political interference. Media scrutiny: the attention of investigative journalists to audit issues, creating public pressure for reform. Economic conditions: the availability of fiscal space for budget increases to the Auditor-General’s office (Dye, 2007; Lienert, 2003; Okike, 2007).
2.2.4 Representation of the Conceptual Framework
The conceptual framework can be represented as follows:
Independent Variables (Strategies)
- Independence-enhancing strategies (legislative appointment, independent budget, tenure protection, exemption from civil service, anti-interference)
- Resource-enhancing strategies (adequate budget, competitive remuneration, qualified staff, training, technology)
- Process-improvement strategies (risk-based planning, ISSAIs, CAATs, performance auditing, early engagement, timely reporting)
- Accountability and enforcement strategies (strengthen PAC, mandatory implementation, sanctions, follow-up, publication, civil society engagement)
- Capacity-building strategies (MDA training, pre-audit consultation, post-audit feedback, knowledge sharing)
Moderating Variables
- Political will
- Civil society pressure
- Donor support
- Judicial independence
- Media scrutiny
- Economic conditions
Dependent Variable (Minimisation of Audit Problems)
- Timeliness (reduced delay)
- Completeness (coverage of all MDAs)
- Credibility (independence, audit quality)
- Usefulness (performance auditing, relevant findings)
- Impact (implementation of recommendations, improved financial management)
The framework guides the analysis of strategies for the minimization of audit problems in the public sector in Nigeria.
2.3 Summary of Literature Review in Tabular Format
| Author(s) and Year | Strengths of the Study | Weaknesses of the Study | Limitations of the Study | Gaps Identified |
| Jensen and Meckling (1976); Moe (1984) | Developed agency theory; explains role of audit as monitoring mechanism; identifies independence, resources, consequences as key | Assumes rational self-interest; limited attention to ethical or trust-based governance | Theoretical framework with extensive testing in private sector; public sector testing more limited | Application to Nigerian public sector audit not examined; agency problems in Nigeria not quantified |
| Davis, Schoorman and Donaldson (1997) | Developed stewardship theory; alternative to agency; emphasises collaboration and enabling approach | May overstate altruism of public officials; limited applicability in corrupt environments | Theoretical framework with limited testing in public sector; Nigeria not examined | Application to Nigerian public sector audit not examined; stewardship vs agency in Nigeria not tested |
| Mautz and Sharaf (1961); Flint (1988) | Developed public interest theory of auditing; provides normative justification for independence and transparency | Assumes professional ethics; may not apply in low-trust environments | Theoretical framework with limited empirical testing | Application to Nigerian public sector audit not examined; public interest orientation of Auditor-General not assessed |
| Power (1997); Sikka (2009) | Developed institutional theory of audit quality; explains role of institutional environment | Focus on private sector; public sector application less developed | Theoretical framework with empirical testing in UK; Nigeria not examined | Application to Nigerian SAI not examined; institutional environment of OAuGF not analysed |
| Hood (1991, 1995); Osborne and Gaebler (1992) | Developed New Public Management theory; advocates performance auditing, transparency, autonomy, citizen participation | NPM reforms have been criticised for negative effects (gaming, target distortion) | Theoretical framework with extensive policy applications; Nigeria-specific not examined | Application to Nigerian public sector audit not examined; NPM reforms for OAuGF not assessed |
| DeAngelo (1981); Mautz and Sharaf (1961) | Developed theory of audit independence; identifies independence in fact and appearance; provides mechanisms | Focus on private sector; public sector application less developed | Theoretical framework with extensive testing in private sector; public sector limited | Application to Nigerian public sector audit independence not examined; threats to independence in Nigeria not identified |
| Dye (2007) | Comprehensive review of public financial management and accountability; includes audit role | Global review; limited Nigeria-specific analysis; now dated (2007) | Cross-country analysis with limited depth on Nigeria | Nigeria-specific audit problems not analysed; strategies not tailored to Nigeria |
| Lienert (2003) | Comparative analysis of PFM reforms; includes audit role | Now dated (2003); post-2003 reforms not covered | Comparative study with limited Nigeria-specific depth | Nigeria-specific audit reform outcomes not examined; strategies not evaluated |
| Okike (2007) | Examined corporate governance in Nigeria; includes public sector accountability | Pre-2007; does not cover recent reforms; focus on private sector | Single-country (Nigeria) study with limited public sector focus | Public sector audit problems and strategies not examined |
| Auditor-General of Federation (various years) | Primary source on audit findings; official data | Official reports may reflect reporting biases; limited analysis of causes | Compliance-focused audits; limited analysis of strategies | Root causes of audit problems not analysed; strategies for minimisation not developed |
| INTOSAI (2013) | International standards for public sector auditing; authoritative framework | Standards not a study; no empirical evidence on implementation | International standards with no Nigeria-specific analysis | Implementation of ISSAIs in Nigeria not assessed; strategies for implementation not developed |
| OAuGF (2015) | Official OAuGF annual report; provides information on audit operations | Official report may reflect reporting biases; limited critical analysis | Single-year report; limited trend analysis | Trends in audit problems not analysed; effectiveness of strategies not assessed |
