INTERNAL AUDITING AS AN AID TO MANAGEMENT (A STUDY OF HOUSEHOLD PRODUCTS COMPANY)

CHAPTER ONE: INTRODUCTION

1.1 Background of the Study

Internal auditing is an independent, objective assurance and consulting activity designed to add value and improve an organization’s operations. It helps an organization accomplish its objectives by bringing a systematic, disciplined approach to evaluate and improve the effectiveness of risk management, control, and governance processes. Unlike external audit, which focuses primarily on the accuracy of financial statements for external stakeholders (shareholders, regulators, creditors), internal audit serves the needs of management and the board of directors. Internal auditors examine a wide range of organizational activities, including financial operations, compliance with laws and regulations, efficiency of operations, effectiveness of programs, and the reliability of information systems. The ultimate goal of internal audit is to help management achieve organizational objectives efficiently, effectively, and ethically (IIA, 2017; Sawyer and Dittenhofer, 2018).

The concept of internal auditing has evolved significantly over the past several decades. Historically, internal audit was viewed primarily as a detective function focused on fraud prevention and the verification of financial records. This traditional approach emphasized “auditing around the computer” and checking transactions for accuracy. However, the modern definition, as articulated by the Institute of Internal Auditors (IIA), positions internal audit as a proactive, value-adding function that advises management on how to improve processes, reduce risks, enhance controls, and achieve organizational objectives. This shift from a compliance-oriented to a performance-enhancing role has made internal audit indispensable for organizations seeking to navigate complex, dynamic environments. In Nigeria, this evolution is gradually being embraced, though many organizations still underutilize the full potential of their internal audit departments (Adekoya and Adebiyi, 2019; Eze and Nwafor, 2019).

Management is the process of planning, organizing, directing, and controlling organizational resources (human, financial, physical, and informational) to achieve organizational objectives. Managers at all levels—strategic (senior management, board), tactical (middle management), and operational (supervisors)—make decisions, allocate resources, set goals, monitor performance, and take corrective action. Effective management requires reliable, timely information about the organization’s operations, risks, and controls. Internal auditing provides this information. By identifying control weaknesses, process inefficiencies, compliance gaps, and fraud risks, internal audit helps management make better decisions, improve performance, and achieve organizational objectives. Internal audit is thus properly described as an “aid to management” (Koontz and Weihrich, 2015; Robbins and Coulter, 2018).

Household Products Company operates in the fast-moving consumer goods (FMCG) sector, an industry characterized by high-volume production, extensive distribution networks, intense competition, thin profit margins, and rapidly changing consumer preferences. Household products include cleaning agents, detergents, soaps, disinfectants, insecticides, air fresheners, and other products used in the home. Companies in this sector face significant operational challenges: managing raw material procurement (often from multiple suppliers), maintaining production efficiency, controlling inventory levels (raw materials, work-in-progress, finished goods), managing distribution logistics, ensuring product quality, complying with health and safety regulations, and responding to competitive pressures. In such an environment, internal audit is not a luxury but a necessity for effective management (Okafor and Udeh, 2020; Adebayo and Oyedokun, 2019).

The relationship between internal auditing and management can be understood through several key functions that internal audit performs as an aid to management. First, internal audit provides assurance to management that controls are operating effectively and that risks are being managed. This assurance allows management to focus on strategic issues rather than constantly monitoring routine operations. Second, internal audit provides insight through analysis, recommendations, and forward-looking perspectives that help management improve processes, reduce costs, and enhance performance. Third, internal audit provides objectivity; because internal auditors are independent of the operations they audit, they can provide unbiased assessments that internal managers may be unable or unwilling to provide about their own departments. Fourth, internal audit supports accountability by creating a “paper trail” and monitoring that encourages managers to maintain good controls and take corrective action (IIA, 2017; Pickett, 2018).

The specific ways in which internal audit aids management in a manufacturing company like Household Products Company include: (a) evaluating the effectiveness of internal controls over inventory (preventing theft, spoilage, and obsolescence), (b) assessing the efficiency of production processes (identifying bottlenecks, waste, and quality issues), (c) reviewing procurement practices (ensuring value for money, detecting kickbacks or inflated prices), (d) examining distribution and logistics (identifying delays, damage, or theft in transit), (e) evaluating compliance with health, safety, and environmental regulations (avoiding fines and reputational damage), (f) assessing information systems (ensuring data integrity, security, and disaster recovery), and (g) conducting fraud investigations (detecting and preventing employee theft, vendor fraud, or management override). In each of these areas, internal audit provides management with information and recommendations that directly support decision-making and performance improvement (Moeller, 2019; Sawyer and Dittenhofer, 2018).

The internal audit process typically follows a structured cycle: planning (developing a risk-based audit plan aligned with management priorities), fieldwork (executing audit procedures, testing controls, gathering evidence), reporting (communicating findings, conclusions, and recommendations to management and the audit committee), and follow-up (tracking management’s implementation of audit recommendations). For internal audit to be an effective aid to management, this cycle must be executed competently and independently. The audit plan must focus on the risks that most threaten the achievement of management’s objectives. Audit findings must be communicated clearly and timely. Management must be responsive to recommendations. The audit committee must provide strong oversight. When these conditions are met, internal audit becomes a trusted advisor to management (Pickett, 2018; Spira and Page, 2019).

The effectiveness of internal audit as an aid to management depends on several critical factors. Independence and objectivity: internal auditors must be independent of the operations they audit and must maintain an objective mindset. They should report directly to the audit committee, not to operational management, to ensure they can raise issues without fear of retaliation. Competence: internal auditors must possess the technical knowledge, skills, and professional certifications (e.g., Certified Internal Auditor, CIA) needed to audit complex manufacturing operations. Management support: internal audit cannot be effective if management is uncooperative, ignores audit recommendations, or retaliates against auditors who raise issues. Audit committee effectiveness: a strong, independent, financially literate audit committee enhances internal audit effectiveness by providing oversight and ensuring management responsiveness. Resources: adequate funding, staffing, and technology are essential for internal audit to perform its duties. For Household Products Company, the extent to which these factors are present directly affects how well internal audit aids management (Alzeban and Gwilliam, 2019; Mihret and Yismaw, 2018).

The audit committee of the board plays a particularly important role in ensuring that internal audit effectively aids management. The audit committee is responsible for approving the internal audit charter, appointing the chief audit executive, reviewing the audit plan, discussing audit findings, and monitoring management’s response to audit recommendations. In manufacturing companies, the audit committee is typically composed of non-executive directors, with a requirement that members be financially literate. An effective audit committee ensures that internal audit remains independent, adequately resourced, and focused on high-risk areas. It also ensures that management takes audit findings seriously and implements recommendations. For Household Products Company, the composition and effectiveness of its audit committee would significantly affect internal audit’s ability to aid management (FRCN, 2014; CBN, 2014).

The relationship between internal audit and management can sometimes be adversarial. Managers may perceive internal auditors as “police” who are looking for mistakes to punish. Auditors may view management as uncooperative or resistant to change. This adversarial relationship undermines internal audit’s ability to aid management. To be effective, internal audit must be seen as a partner and trusted advisor, not an adversary. This requires auditors to develop strong interpersonal skills, communicate findings constructively (focusing on process improvement, not blame), and work collaboratively with management to develop solutions. Management, for its part, must view internal audit as a valuable resource, not a threat. For Household Products Company, fostering a positive, collaborative relationship between internal audit and management is essential for internal audit to fulfill its role as an aid to management (Eze and Nwafor, 2019; Adebayo and Oyedokun, 2020).

The distinction between assurance and consulting activities is important for understanding how internal audit aids management. Assurance activities involve objective examinations of evidence to provide independent assessments of risk management, control, or governance. Examples include financial audits, compliance audits, and operational audits. Consulting activities involve advisory services designed to add value and improve an organization’s operations, such as advice on system design, participation in project teams, training, and facilitation. In many organizations, internal audit has historically focused on assurance activities. However, the modern internal audit profession recognizes that consulting activities can be equally valuable in aiding management. For Household Products Company, internal audit could aid management by both assuring that existing controls are effective and consulting on the design of new processes or systems (IIA, 2017; Sawyer and Dittenhofer, 2018).

The risk-based audit approach is a key methodology for ensuring that internal audit resources are deployed where they can most aid management. Rather than auditing all areas equally (a “checklist” approach), risk-based auditing focuses on the areas with the highest risk to the achievement of organizational objectives. Management’s priorities—what keeps the CEO awake at night—should drive the audit plan. For Household Products Company, high-risk areas might include inventory management (high-value raw materials and finished goods), supplier relationships (dependence on key suppliers, procurement fraud), production efficiency (downtime, waste, quality issues), distribution logistics (theft, damage, delays), and regulatory compliance (health, safety, environmental). By focusing on these high-risk areas, internal audit provides the most value to management (Pickett, 2018; Moeller, 2019).

Internal audit’s role in fraud detection and prevention is particularly important as an aid to management. Fraud can take many forms in a manufacturing company: theft of raw materials or finished goods by employees, kickbacks from suppliers, falsification of production reports, manipulation of inventory counts, and management override of controls. Internal audit helps management by: (a) assessing the risk of fraud, (b) testing controls designed to prevent fraud, (c) investigating suspected fraud, (d) recommending improvements to reduce fraud risk, and (e) creating a deterrent effect (employees are less likely to commit fraud if they know internal audit is active). For Household Products Company, an effective internal audit function is a powerful tool for protecting assets and maintaining management’s ability to achieve organizational objectives (Eze and Nwafor, 2020; Okafor and Udeh, 2021).

The cost-benefit of internal audit is an important consideration for management. Internal audit is not free; it requires investment in salaries, training, technology, and administrative support. Management must decide how much to invest in internal audit. The cost of internal audit should be weighed against the benefits: reduced losses from fraud and inefficiency, improved compliance, better decision-making, and enhanced risk management. The optimal level of internal audit investment is where the marginal benefit equals the marginal cost. For Household Products Company, management must assess whether the current internal audit function is appropriately resourced and whether it provides value commensurate with its cost (Pickett, 2018; Sawyer and Dittenhofer, 2018).

The Nigerian manufacturing sector, in which Household Products Company operates, faces specific challenges that make internal audit particularly important. These include: unreliable electricity supply (affecting production and cold chain), foreign exchange volatility (affecting cost of imported raw materials and equipment), inadequate infrastructure (roads affecting distribution), intense competition (from both multinationals and local producers), regulatory complexity (multiple agencies, changing requirements), and security concerns (theft, vandalism). In this challenging environment, management requires timely, accurate information about risks and controls to make effective decisions. Internal audit, when properly implemented, provides this information. For Household Products Company, the relevance and value of internal audit as an aid to management is heightened by the difficult operating environment (Adebayo and Oyedokun, 2020; Eze and Nwafor, 2021).

Finally, this study focuses on Household Products Company as a case study because it represents a typical manufacturing enterprise in the Nigerian FMCG sector. The company faces many of the same operational, financial, and compliance challenges as other manufacturers. By examining how internal audit aids management at this company, the study can generate insights that are applicable to other manufacturing firms in Nigeria. The findings will contribute to the growing body of knowledge on internal audit effectiveness in the Nigerian context and provide practical guidance for management seeking to leverage internal audit as a tool for improving organizational performance (Yin, 2018; Creswell and Creswell, 2018).

1.2 Statement of the Problem

Household Products Company, like many manufacturing firms in Nigeria, faces significant operational, financial, and compliance challenges that require effective management decision-making. Internal audit is intended to aid management by providing independent assurance, insight, and advice on risk management, control, and governance processes. However, there are concerns about whether internal audit at the company is actually fulfilling this role effectively. Preliminary observations and management feedback suggest potential problems: internal audit may be under-resourced (insufficient staff, budget, or technology), its scope may be limited (focusing on financial compliance rather than operational efficiency), its findings may be ignored or resisted by management, there may be tensions between auditors and auditees, and management may not see internal audit as a value-adding partner. These problems, if present, would mean that internal audit is not serving as an effective aid to management, and the company may be incurring the costs of an internal audit function without reaping the benefits. There is a lack of recent, systematic, empirical research specifically examining how internal audit aids (or fails to aid) management at Household Products Company. Therefore, this study is motivated to investigate internal auditing as an aid to management at Household Products Company, identify the factors that enhance or hinder internal audit’s contribution, and propose recommendations for strengthening the internal audit function.

1.3 Aim of the Study

The aim of this study is to examine internal auditing as an aid to management, using Household Products Company as a case study.

1.4 Objectives of the Study

The specific objectives of this study are to:

1. Examine the current internal auditing practices and procedures at Household Products Company.
2. Assess the extent to which internal audit provides assurance, insight, and objectivity to management at the company.
3. Determine the impact of internal audit findings and recommendations on management decision-making and operational improvements.
4. Identify the challenges affecting internal audit’s ability to aid management effectively at Household Products Company.
5. Propose practical recommendations for strengthening internal audit as an aid to management at the company and similar manufacturing firms.

1.5 Research Questions

The following research questions guide this study:

1. What are the current internal auditing practices and procedures at Household Products Company?
2. To what extent does internal audit provide assurance, insight, and objectivity to management at the company?
3. What impact do internal audit findings and recommendations have on management decision-making and operational improvements at Household Products Company?
4. What are the major challenges affecting internal audit’s ability to aid management effectively at the company?
5. What practical recommendations can be implemented to strengthen internal audit as an aid to management at Household Products Company and similar manufacturing firms?

1.6 Research Hypotheses

The following hypotheses are formulated in null (H₀) and alternative (H₁) forms:

Hypothesis One

• H₀: Internal audit has no significant effect on management decision-making at Household Products Company.
• H₁: Internal audit has a significant effect on management decision-making at Household Products Company.

Hypothesis Two

• H₀: There is no significant relationship between internal audit recommendations and operational improvements at Household Products Company.
• H₁: There is a significant relationship between internal audit recommendations and operational improvements at Household Products Company.

Hypothesis Three

• H₀: Management support does not significantly affect the effectiveness of internal audit as an aid to management at Household Products Company.
• H₁: Management support significantly affects the effectiveness of internal audit as an aid to management at Household Products Company.

Hypothesis Four

• H₀: Challenges such as inadequate resources, scope limitations, and management resistance do not significantly affect internal audit’s ability to aid management at Household Products Company.
• H₁: Challenges such as inadequate resources, scope limitations, and management resistance significantly affect internal audit’s ability to aid management at Household Products Company.

1.7 Significance of the Study

This study is significant for several stakeholders. First, the management and board of directors of Household Products Company will benefit from a systematic assessment of how internal audit currently aids (or fails to aid) management, enabling them to strengthen the internal audit function, address challenges, and maximize the value derived from internal audit. Second, internal audit professionals (Chief Audit Executive, internal auditors) at the company will gain insights into best practices, common challenges, and strategies for enhancing their contribution to management. Third, other manufacturing companies in Nigeria, particularly those in the fast-moving consumer goods (FMCG) sector, can use the findings as a benchmark for evaluating and improving their own internal audit functions. Fourth, industry associations such as the Manufacturers Association of Nigeria (MAN) will gain insights into the role of internal audit in manufacturing, informing training programs and advocacy for members. Fifth, professional bodies such as the Institute of Internal Auditors (IIA Nigeria), the Institute of Chartered Accountants of Nigeria (ICAN), and the Association of National Accountants of Nigeria (ANAN) will find value in the study’s identification of challenges and best practices, informing training, CPD programs, and guidance for members. Sixth, academics and researchers in auditing, management accounting, and corporate governance will benefit from the study’s contribution to the literature on internal audit effectiveness in the Nigerian manufacturing context. Seventh, students of accounting, auditing, and business management will find the study useful as a practical case study illustrating the application of internal audit concepts. Eighth, regulators such as the Financial Reporting Council of Nigeria (FRCN) will gain evidence on the factors that affect internal audit effectiveness, informing regulatory requirements and guidance. Finally, the broader Nigerian economy will benefit as improved internal audit practices across the manufacturing sector lead to stronger companies, better governance, and increased competitiveness.

1.8 Scope of the Study

This study focuses on internal auditing as an aid to management, using Household Products Company as a case study. Geographically, the research is limited to the headquarters and manufacturing facilities of Household Products Company in Nigeria. The company is a manufacturing enterprise in the fast-moving consumer goods (FMCG) sector, producing household cleaning products, detergents, and related items. Content-wise, the study examines the following areas: internal audit practices and procedures (audit planning, fieldwork, reporting, follow-up); the role of internal audit in providing assurance, insight, and objectivity to management; the impact of audit findings and recommendations on management decision-making and operational improvements; challenges (independence, resources, competence, management support, audit committee effectiveness, scope limitations, management resistance); and improvement strategies. The study targets management (including the Managing Director, departmental heads), internal auditors (including the Chief Audit Executive), the audit committee (if accessible), and relevant operational staff. The time frame for data collection is the cross-sectional period of 2023–2024. The study does not cover the company’s external audit (except as it relates to internal audit), nor does it cover other manufacturing companies (except for comparative context), nor does it cover the company’s financial or tax audits.

1.9 Definition of Terms

Internal Audit: An independent, objective assurance and consulting activity designed to add value and improve an organization’s operations. It helps an organization accomplish its objectives by bringing a systematic, disciplined approach to evaluate and improve the effectiveness of risk management, control, and governance processes.

Management: The process of planning, organizing, directing, and controlling organizational resources to achieve organizational objectives. In this study, “management” refers to the managers at Household Products Company who make decisions, allocate resources, set goals, and monitor performance.

Aid to Management: The assistance, support, and value that internal audit provides to management through assurance, insight, objectivity, and accountability, helping management make better decisions, improve performance, and achieve organizational objectives.

Assurance: The provision of independent, objective assessments of risk management, control, or governance that give management confidence that processes are operating effectively.

Insight: The analysis, recommendations, and forward-looking perspectives provided by internal audit that help management improve processes, reduce costs, and enhance performance.

Objectivity: The unbiased, independent mindset of internal auditors that allows them to provide assessments that internal managers may be unable or unwilling to provide about their own departments or functions.

Household Products Company: A manufacturing company in the fast-moving consumer goods (FMCG) sector, producing household cleaning products, detergents, soaps, and related items, serving as the case study for this research.

Audit Committee: A committee of the board of directors (typically composed of independent non-executive directors) responsible for overseeing the financial reporting process, internal controls, and the internal and external audit functions.

Chief Audit Executive (CAE): The senior internal audit executive responsible for managing the internal audit function, reporting to the audit committee and senior management.

Audit Plan: A document developed annually by the internal audit function, based on risk assessment, that identifies the audits to be conducted, their scope, timing, and resource requirements.

Audit Recommendation: A suggestion or directive made by internal auditors to management aimed at correcting identified deficiencies, improving processes, or strengthening controls.

Risk-Based Auditing: An audit approach that focuses internal audit resources on the areas of highest risk to the achievement of organizational objectives, rather than auditing all areas equally.

Operational Audit: An audit that evaluates the efficiency, effectiveness, and economy of an organization’s operations, processes, and activities.

Compliance Audit: An audit that assesses adherence to laws, regulations, contracts, and internal policies.

Consulting (Advisory) Services: Internal audit activities that provide advice, facilitation, training, or other services to management to improve processes and performance, as distinguished from assurance services.

Independence (Auditor Independence): The ability of internal auditors to perform their work without bias, conflict of interest, or undue influence from management, including organizational independence (reporting to the audit committee) and objectivity (unbiased attitude).

Competence (Auditor Competence): The knowledge, skills, abilities, and professional certifications (e.g., Certified Internal Auditor, CIA) that internal auditors possess to perform their duties effectively.

Follow-up: The process of tracking management’s implementation of audit recommendations to ensure that corrective actions are taken.

Internal Control: The policies, procedures, and mechanisms implemented by management to provide reasonable assurance regarding the achievement of organizational objectives, including reliable financial reporting, compliance with laws, and safeguarding of assets.

Fast-Moving Consumer Goods (FMCG): Products that sell quickly at relatively low cost, including household cleaning products, detergents, soaps, and other consumables; the sector in which Household Products Company operates.

CHAPTER TWO: LITERATURE REVIEW

2.1 Conceptual Framework

A conceptual framework is a structural representation of the key concepts or variables in a study and the hypothesized relationships among them. It serves as the analytical lens through which the researcher organizes the study, selects appropriate methodology, and interprets findings. In this study, the conceptual framework is built around two primary constructs: Internal Auditing (the independent variable) and Aid to Management (the dependent variable). Additionally, the framework identifies the specific dimensions of each construct and the mediating and moderating variables that influence the relationship (Miles, Huberman, and Saldaña, 2020).

The independent variable, Internal Auditing, refers to an independent, objective assurance and consulting activity designed to add value and improve an organization’s operations. For the purpose of this study, internal auditing is conceptualized along six key dimensions derived from the International Professional Practices Framework (IPPF) of the Institute of Internal Auditors: (a) independence and objectivity (the organizational reporting lines and mental attitude that ensure auditors can perform their work without bias or undue influence), (b) professional competence (the knowledge, skills, and certifications of internal audit staff), (c) scope of work (the range of activities covered, including financial audits, compliance audits, operational audits, information technology audits, and risk management audits), (d) audit process (the methodology for planning, executing, reporting, and following up on audits), (e) quality assurance and improvement (the processes for ensuring audit quality, including internal assessments and external reviews), and (f) relationship with management and the audit committee (the interaction with and support from key oversight bodies). Each dimension contributes differently to the overall effectiveness of internal audit as an aid to management (IIA, 2017; Sawyer and Dittenhofer, 2018).

The dependent variable, Aid to Management, refers to the assistance, support, and value that internal audit provides to management to help them achieve organizational objectives. For the purpose of this study, aid to management is conceptualized along five key dimensions: (a) assurance provision (the confidence that management gains from internal audit that controls are effective and risks are managed), (b) insight provision (the analysis, recommendations, and forward-looking perspectives that help management improve processes and make better decisions), (c) objectivity provision (the unbiased assessments that internal audit provides, which internal managers may be unable or unwilling to provide about their own departments), (d) accountability enhancement (the mechanism by which internal audit creates a “paper trail” and monitoring that encourages management to maintain good controls and take corrective action), and (e) fraud detection and deterrence (the identification of irregularities and the creation of a deterrent effect that protects organizational assets). An effective internal audit function contributes to management across all five dimensions (Pickett, 2018; Moeller, 2019).

The conceptual framework posits a positive relationship between the effectiveness of internal audit and the degree to which it aids management. Specifically, when internal audit is independent, competent, well-scoped, and supported by management and the audit committee, it provides high-quality assurance, valuable insights, objective assessments, strong accountability, and effective fraud protection. This, in turn, helps management make better decisions, improve operations, manage risks, and achieve organizational objectives. Conversely, when internal audit is weak—lacking independence, competence, resources, or management support—its ability to aid management is diminished. In such cases, management may not receive the information and insights needed for effective decision-making, and organizational performance may suffer (Alzeban and Gwilliam, 2019; Mihret and Yismaw, 2018).

An important feature of this conceptual framework is the recognition of mediating mechanisms through which internal audit aids management. The framework identifies four primary mediating mechanisms: (a) risk reduction (internal audit helps identify and mitigate risks that could prevent management from achieving objectives), (b) control improvement (internal audit identifies control weaknesses and recommends enhancements, making processes more reliable), (c) process optimization (internal audit identifies inefficiencies and recommends improvements, reducing costs and increasing productivity), and (d) compliance assurance (internal audit ensures adherence to laws and regulations, avoiding penalties and reputational damage). Each mechanism operates through different channels and may be more or less important depending on the organizational context (IIA, 2017; Spira and Page, 2019).

The framework also identifies several moderating variables that influence the strength of the relationship between internal audit and its aid to management. These include: (a) organizational factors (size, complexity, organizational culture, industry), (b) management factors (management’s attitude toward internal audit, willingness to act on recommendations, openness to feedback), (c) governance factors (strength and independence of the audit committee, tone at the top), (d) resource factors (funding for internal audit, staffing levels, technology), (e) environmental factors (regulatory intensity, competitive pressure, economic conditions), and (f) audit committee effectiveness (the competence, independence, and diligence of the audit committee in overseeing internal audit). For Household Products Company, the specific values of these moderating variables will determine how well internal audit aids management (Eze and Nwafor, 2019; Adebayo and Oyedokun, 2020).

The framework also distinguishes between the different types of aid that internal audit provides to different levels of management. For strategic management (board, CEO, senior executives), internal audit aids by assessing enterprise-wide risks, evaluating strategic initiatives, and providing assurance on the overall control environment. For tactical management (department heads, functional managers), internal audit aids by evaluating specific processes, identifying inefficiencies, and recommending improvements. For operational management (supervisors, team leaders), internal audit aids by testing day-to-day controls, identifying training needs, and detecting operational irregularities. An effective internal audit function tailors its approach and reporting to the needs of different management levels (Pickett, 2018; Sawyer and Dittenhofer, 2018).

The framework also acknowledges that the relationship between internal audit and management can be either collaborative or adversarial, and this relationship significantly affects internal audit’s ability to aid management. In a collaborative relationship, management views internal audit as a partner and trusted advisor; auditors are seen as helpful experts who identify problems and propose solutions. In an adversarial relationship, management views internal audit as a “police” function that looks for mistakes to punish; auditors are seen as threats. The framework suggests that collaborative relationships lead to greater management acceptance of audit recommendations, more effective implementation of improvements, and ultimately greater aid to management. For Household Products Company, fostering a collaborative relationship between internal audit and management is essential (Eze and Nwafor, 2019; Okafor and Udeh, 2020).

Methodologically, the conceptual framework guides the development of research instruments and analytical procedures. Interview guides and survey questionnaires are structured to capture each dimension of internal audit (independence, competence, scope, process, quality, audit committee relationship) and each dimension of aid to management (assurance, insight, objectivity, accountability, fraud deterrence). Questions probe specific examples from Household Products Company’s experience. The framework also guides the analysis of secondary data, including internal audit reports, management responses, audit committee minutes, and performance data (Creswell and Creswell, 2018; Saunders, Lewis, and Thornhill, 2019).

Empirical studies that have employed similar conceptual frameworks in manufacturing contexts provide validation for this approach. For example, studies on internal audit in European manufacturing firms found that operational audits (scope dimension) and management support (moderating variable) were the strongest predictors of internal audit’s contribution to process improvements. Studies on Asian manufacturing firms found that independence and audit committee effectiveness were the strongest predictors of internal audit’s contribution to fraud detection. In Nigeria, research on manufacturing firms has found that internal audit effectiveness varies significantly by firm size and ownership structure, with larger, professionally managed firms (like Household Products Company likely is) having more effective internal audit functions. These findings support the relevance of the current framework for Household Products Company (Adebayo and Oyedokun, 2020; Eze and Nwafor, 2021; Okafor and Udeh, 2021).

The conceptual framework also addresses the unique characteristics of Household Products Company as a manufacturing firm in the FMCG sector. Manufacturing firms face specific challenges that internal audit can help address: inventory management (raw materials, work-in-progress, finished goods), production efficiency, quality control, supply chain management, distribution logistics, and regulatory compliance (health, safety, environmental). The framework includes these industry-specific factors as moderating variables that affect the internal audit-management relationship (Okafor and Udeh, 2020; Adebayo and Oyedokun, 2019).

Visually, the conceptual framework for this study can be represented as a diagram with “Internal Auditing” (independent variable) at the left, with six boxes (independence, competence, scope, process, quality, audit committee relationship). An arrow points to “Aid to Management” (dependent variable) on the right, with five boxes (assurance, insight, objectivity, accountability, fraud deterrence). Along the arrow are placed the four mediating mechanisms (risk reduction, control improvement, process optimization, compliance assurance). Above the arrow are placed the moderating variables (organizational factors, management factors, governance factors, resource factors, environmental factors, audit committee effectiveness). A second arrow distinguishes between strategic, tactical, and operational management levels receiving different types of aid. This visual representation aids readers in quickly grasping the hypothesized relationships (Miles et al., 2020).

In summary, the conceptual framework of this study provides a clear, logical, and empirically grounded structure for investigating internal auditing as an aid to management at Household Products Company. By disaggregating internal audit into six dimensions and aid to management into five dimensions, and by acknowledging the mediating mechanisms and moderating variables, the framework enhances the validity and reliability of the research findings. It also serves as a bridge between the theoretical foundations (discussed in section 2.2) and the empirical investigation (chapters three and four) (Creswell and Creswell, 2018).

2.2 Theoretical Framework

A theoretical framework is a collection of interrelated concepts, definitions, and propositions that present a systematic view of phenomena by specifying relationships among variables, with the purpose of explaining and predicting those phenomena. In this study, five major theories are adopted to explain the relationship between internal auditing and its aid to management: the Agency Theory, the Stewardship Theory, the Management Control Theory, the Resource-Based View (RBV) of the Firm, and the Modern Internal Audit (Value-Added) Theory. These theories collectively provide a robust lens for understanding how internal audit aids management, why it is effective or ineffective, and what factors influence this relationship (Jensen and Meckling, 1976; Davis, Schoorman, and Donaldson, 1997; Merchant and Van der Stede, 2017; Barney, 1991; IIA, 2017).

2.2.1 Agency Theory

Agency Theory, developed by Jensen and Meckling (1976), is one of the most influential theories in corporate governance, auditing, and management control. The theory describes the relationship between principals (owners/shareholders) and agents (managers who run the company on behalf of owners). In the context of Household Products Company, the principals are the shareholders (owners) of the company. The agents are the management team—the Managing Director, departmental heads, and other managers. Agency Theory posits that agents may not always act in the best interests of principals due to information asymmetry (agents have more information about the company’s operations, costs, risks, and opportunities than principals do) and divergent interests (agents may pursue personal goals such as job security, power, bonuses, or career advancement rather than shareholder value maximization). This divergence creates agency costs, which include monitoring costs (expenditures to oversee agent behavior), bonding costs (expenditures by agents to assure principals of their fidelity), and residual loss (the value lost when agent decisions deviate from principal interests) (Jensen and Meckling, 1976; Premchand, 2019).

In the context of this study, Agency Theory explains how internal audit aids management by reducing agency costs. When internal audit provides independent assurance to the board and shareholders that management is acting in the company’s best interests, it reduces information asymmetry and the need for direct monitoring by principals. This allows management to focus on running the business rather than on costly reporting and justification activities. At the same time, internal audit helps management by identifying areas where agent behavior (including management’s own behavior) may be deviating from principal interests, allowing corrective action. For example, if internal audit identifies that a department manager is inflating expenses or bypassing procurement controls, this information aids senior management (as agents of the principals) to take corrective action. Thus, internal audit aids both principals (by monitoring) and management (by providing information that helps them monitor their subordinates) (Mihret and Yismaw, 2018; Okafor and Udeh, 2020).

Agency Theory also explains the role of the audit committee in the internal audit-management relationship. The audit committee, as an agent of the board (which represents shareholders), oversees the internal audit function to ensure it remains independent and effective. This oversight helps ensure that internal audit continues to aid management appropriately, without being co-opted or suppressed by management. The theory predicts that companies with strong, independent audit committees will have more effective internal audit functions that better aid management. For Household Products Company, the strength of its audit committee is a key determinant of internal audit’s effectiveness (FRCN, 2014; CBN, 2014).

Empirical research has consistently supported Agency Theory predictions about internal audit. Studies have found that organizations with higher perceived agency costs invest more in internal audit and have stronger internal audit functions. In manufacturing firms, research has found that internal audit effectiveness is associated with higher profitability, lower overhead costs, and fewer operational irregularities. For Household Products Company, Agency Theory suggests that internal audit aids management by reducing the agency costs that arise from the separation of ownership and control (Adebayo and Oyedokun, 2020; Eze and Nwafor, 2019).

2.2.2 Stewardship Theory

Stewardship Theory, developed by Davis, Schoorman, and Donaldson (1997), offers a contrasting perspective to Agency Theory. While Agency Theory assumes that agents are self-interested and opportunistic, Stewardship Theory posits that managers and employees are inherently trustworthy, responsible, and motivated to act in the best interests of the organization and its stakeholders. Stewards derive satisfaction from organizational achievement, collective success, and the responsible management of resources placed in their care. In the context of Household Products Company, Stewardship Theory suggests that most managers and staff genuinely want the company to succeed, to produce quality products, to satisfy customers, and to generate profits. They do not require constant monitoring and punitive controls; rather, they need the tools, training, and support to fulfill their stewardship responsibilities (Davis et al., 1997; Mellett, 2019).

In the context of this study, Stewardship Theory explains how internal audit aids management by enabling stewards to do their jobs better. From a stewardship perspective, internal audit is not a “police” function but a “partner” function. Audit findings about process inefficiencies help stewards (managers) improve operations. Risk assessments help stewards prioritize their efforts. Recommendations help stewards strengthen controls. Internal audit, in this view, is an aid to management because it provides the information and insights that responsible managers need to fulfill their stewardship obligations. This perspective is consistent with the modern internal audit emphasis on value-adding and consulting activities, beyond traditional compliance and fraud detection (IIA, 2017; Sawyer and Dittenhofer, 2018).

Stewardship Theory also explains why excessively adversarial or rigid internal audit approaches can be counterproductive. If internal auditors are perceived as “gotcha” auditors who focus on blame rather than improvement, management may become defensive, withhold information, and resist recommendations. This undermines internal audit’s ability to aid management. Stewardship Theory suggests that internal audit should be conducted in a collaborative, respectful manner that supports and empowers management as stewards of the organization. For Household Products Company, a collaborative approach is likely to be more effective in aiding management than an adversarial one (Eze and Nwafor, 2019; Adebayo and Oyedokun, 2020).

Empirical research has found that organizations with a stewardship culture (characterized by trust, collaboration, and shared commitment to organizational success) have more effective internal audit functions, as measured by management implementation of audit recommendations and achievement of organizational objectives. For Household Products Company, Stewardship Theory suggests that fostering a collaborative relationship between internal audit and management is essential for internal audit to effectively aid management (Okafor and Udeh, 2021).

2.2.3 Management Control Theory

Management Control Theory, as developed by Merchant and Van der Stede (2017) and others, focuses on the mechanisms that organizations use to influence the behavior of their members to achieve organizational objectives. Management control systems include planning (budgeting, goal setting), performance measurement (evaluating actual performance against plans), reward systems (incentives for achieving targets), and monitoring (internal controls, internal audit). Management Control Theory distinguishes between different types of control: results controls (rewarding or punishing based on outcomes), action controls (specifying and monitoring actions, including policies, procedures, and authorization requirements), personnel controls (selecting and training employees to align their values with organizational goals), and cultural controls (creating shared norms and values). Internal audit is a key component of action controls and results controls (Merchant and Van der Stede, 2017; Anthony and Govindarajan, 2018).

In the context of this study, Management Control Theory explains how internal audit aids management by serving as a feedback mechanism in the management control cycle. Management sets plans and budgets (planning). Operations are executed. Internal audit tests whether controls are working and whether actual performance aligns with plans (monitoring). Audit findings are reported to management, who can then take corrective action (feedback). Without internal audit, management would have less reliable information about whether plans are being executed as intended and whether controls are effective. Internal audit thus aids management by providing the independent feedback needed to close the management control loop (Pickett, 2018; Moeller, 2019).

Management Control Theory also explains why internal audit is particularly important for decentralised organizations like manufacturing companies with multiple departments, production lines, warehouses, and distribution centers. As organizations grow and decentralize, senior management cannot directly observe all operations. They rely on management control systems, including internal audit, to monitor performance and ensure alignment with organizational objectives. For Household Products Company, internal audit aids senior management by providing visibility into the performance of different departments and functions (Merchant and Van der Stede, 2017; Spira and Page, 2019).

Empirical research has found that organizations with stronger management control systems, including effective internal audit, have better performance, higher employee alignment with organizational objectives, and lower incidence of fraud and errors. For Household Products Company, Management Control Theory suggests that internal audit is an essential component of the overall management control system, providing the feedback that management needs to steer the organization (Eze and Nwafor, 2020; Okafor and Udeh, 2021).

2.2.4 Resource-Based View (RBV) of the Firm

The Resource-Based View (RBV) of the firm, developed by Jay Barney (1991) and others, explains that firms achieve sustainable competitive advantage not merely by exploiting market opportunities but by developing resources that are valuable, rare, imperfectly imitable, and non-substitutable (VRIN). Resources can be tangible (physical assets, financial capital) or intangible (knowledge, reputation, organizational routines, information systems). In the RBV framework, internal audit is not merely a cost or a compliance requirement but a potential source of competitive advantage when it is implemented in a way that creates VRIN resources (Barney, 1991; Peteraf, 1993).

In the context of this study, RBV explains how internal audit aids management by creating intangible resources that contribute to organizational performance. A high-quality internal audit function provides management with accurate, timely, and insightful information—a valuable resource for decision-making. The knowledge and expertise of internal auditors (e.g., about process optimization, risk management, fraud detection) is a human capital resource. The internal audit methodology and documentation create an organizational routine resource. These resources may be rare (few competitors have equally sophisticated internal audit functions), hard to imitate (requiring years of experience and specific organizational culture), and non-substitutable (no other function provides independent assurance across the entire organization). For Household Products Company, a strong internal audit function can be a source of competitive advantage by helping management make better decisions, reduce costs, and manage risks more effectively (Wade and Hulland, 2004; Melville, Kraemer, and Gurbaxani, 2004).

RBV also explains why simply having an internal audit department (the structure) does not guarantee that it will aid management effectively. The value of internal audit depends on how it is embedded in complementary organizational resources and capabilities. A company with a sophisticated internal audit system but no culture of using audit information for decision-making will not realize the benefits. A company with excellent internal auditors but no management support will also underperform. For Household Products Company, the complementarity between internal audit and other organizational resources (management commitment, audit committee oversight, information systems, staff training) is likely a key determinant of internal audit’s ability to aid management (Eze and Nwafor, 2021; Okafor and Udeh, 2020).

Empirical research in the RBV tradition has found that information systems (including internal audit systems) can be sources of competitive advantage when they are integrated with organizational processes and when they develop over time through learning and adaptation. In the manufacturing sector, studies have found that companies with more sophisticated internal audit functions (broader scope, more skilled staff, better technology) have better operational performance and higher profitability. For Household Products Company, RBV suggests that investment in internal audit should be viewed as a strategic investment that aids management in building competitive advantage (Adebayo and Oyedokun, 2020).

2.2.5 Modern Internal Audit (Value-Added) Theory

Modern Internal Audit Theory, as articulated by the Institute of Internal Auditors (IIA) and reflected in the International Professional Practices Framework (IPPF), represents the contemporary understanding of internal audit’s role. This theory posits that internal audit should be a value-adding activity, not merely a compliance or assurance function. Value is added by: (a) providing objective, independent assurance that helps the organization manage risks and improve controls, (b) offering consulting services that help management improve processes and performance, (c) identifying opportunities for cost savings and efficiency improvements, (d) providing insights into emerging risks and strategic opportunities, and (e) facilitating good governance by supporting the board and audit committee in their oversight responsibilities. The ultimate goal of internal audit, according to this theory, is to help the organization achieve its objectives—which means aiding management (IIA, 2017; Sawyer and Dittenhofer, 2018).

In the context of this study, Modern Internal Audit Theory explains the broad scope of activities through which internal audit can aid management at Household Products Company. Beyond traditional financial and compliance audits, a value-adding internal audit function would conduct: (a) operational audits (identifying inefficiencies in production, inventory management, distribution), (b) performance audits (evaluating whether programs and activities are achieving intended results), (c) IT audits (assessing system security, data integrity, and disaster recovery), (d) risk management audits (evaluating the effectiveness of risk identification and mitigation processes), and (e) consulting engagements (advising on system design, process improvement, and control optimization). The theory predicts that internal audit’s ability to aid management is greatest when it has a broad scope, includes consulting activities, and is aligned with management’s strategic priorities (Pickett, 2018; Moeller, 2019).

Modern Internal Audit Theory also emphasizes the importance of risk-based auditing. Rather than auditing all areas equally, internal audit should focus its resources on the areas of highest risk to the achievement of organizational objectives. For Household Products Company, high-risk areas would likely include: inventory management (theft, spoilage, obsolescence), procurement (kickbacks, inflated prices), production efficiency (downtime, waste, quality issues), distribution (theft, damage, delays), and regulatory compliance (health, safety, environmental). A risk-based audit plan ensures that internal audit resources are deployed where they can add the most value to management (IIA, 2017; Spira and Page, 2019).

Empirical research has found that internal audit functions that adopt modern, value-adding practices (risk-based auditing, consulting, broad scope) are more highly valued by management and are associated with better organizational performance. In the Nigerian manufacturing sector, research has found that companies with more mature internal audit functions (broader scope, more consulting, stronger risk focus) had better operational efficiency and lower incidence of fraud. For Household Products Company, Modern Internal Audit Theory suggests that internal audit’s ability to aid management depends on how fully it adopts value-adding practices (Eze and Nwafor, 2021; Okafor and Udeh, 2021).

2.2.6 Synthesis of the Five Theories

Taken together, Agency Theory, Stewardship Theory, Management Control Theory, Resource-Based View (RBV), and Modern Internal Audit (Value-Added) Theory provide a comprehensive, multi-layered theoretical foundation for this study. Agency Theory explains how internal audit reduces agency costs and information asymmetry, aiding management by providing independent assurance. Stewardship Theory complements Agency Theory by recognizing that managers are often trustworthy stewards and that internal audit should enable rather than constrain. Management Control Theory explains how internal audit serves as a feedback mechanism in the management control cycle, providing the information management needs to steer the organization. RBV explains how internal audit can be a source of competitive advantage when it creates VRIN resources. Modern Internal Audit Theory explains the value-adding mechanisms (assurance, insight, objectivity, accountability) through which internal audit aids management (Jensen and Meckling, 1976; Davis et al., 1997; Merchant and Van der Stede, 2017; Barney, 1991; IIA, 2017).

The synthesis of these theories also guides empirical testing and practical recommendations. Research questions and hypotheses derived from this theoretical framework can focus on: from Agency Theory, whether internal audit reduces agency costs at Household Products Company; from Stewardship Theory, whether management views internal audit as a partner or adversary; from Management Control Theory, whether internal audit provides effective feedback for management control; from RBV, whether internal audit is a valuable resource that aids management; and from Modern Internal Audit Theory, whether internal audit adds value through risk-based auditing, consulting, and broad scope. The framework suggests that internal audit’s ability to aid management at Household Products Company depends on all five theoretical dimensions: effective monitoring (Agency), collaborative stewardship (Stewardship), feedback for control (Management Control), resource development (RBV), and value-adding practices (Modern Internal Audit) (Creswell and Creswell, 2018).

In conclusion, the theoretical framework of this study is firmly anchored in five well-established, complementary theories: Agency Theory (Jensen and Meckling, 1976), Stewardship Theory (Davis et al., 1997), Management Control Theory (Merchant and Van der Stede, 2017), Resource-Based View (Barney, 1991), and Modern Internal Audit (Value-Added) Theory (IIA, 2017). These theories collectively explain the relationship between internal auditing and its aid to management, the mechanisms through which internal audit adds value, the factors that influence internal audit effectiveness, and the evolution of internal audit from compliance to value-adding. The framework provides a solid foundation for the conceptual framework (section 2.1), the research methodology (chapter three), and the interpretation of findings (chapters four and five) (Miles et al., 2020).