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Internal audit v. external audit : a comparative study

July 23, 2021
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internal audit

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This article is written by Ms Reet Balmiki from NALSAR University of Law. This is an exhaustive article conducting a comparative study of internal and external audits.  

Introduction 

The idea of having someone review your work often seems intimidating and unsettling to many. Similarly, when we talk in business terms, auditing the work done by the company is often seen with fear and frustration. Despite being seen as unpleasant, companies continue to carry on routine audits because auditing is one of the primary and most important functions for a business to survive and flourish. 

Timely auditing is the key for a business to ensure proper functioning and risk management in the organisation. It is an essential function to ascertain the accuracy of financial records provided by the organisation. It provides credibility to the company’s financial statements and ensures that all accounts are maintained truly and fairly. It also helps improve the company’s internal controls and systems. 

Audits can be conducted internally by the heads of a particular department or externally by an independent auditor or firm. On this basis, general audits can be classified under two heads – internal and external audits. Internal and external auditing, though separate functions, occur in a complementary rather than conflicting manner.  In addition, the process of the two types of audit is similar, which leads to further confusion between the two. While there might be some overlap between the two, there exists a fine line of difference between them. Before looking at the differences, we must first understand the meaning of the two types of auditing. 

Understanding the meaning 

Internal audit 

The Institute of Internal Auditors (IIA) defines internal audit as an independent, objective assurance and consulting activity designed to add value and improve the organisation’s operations. It effectively examines the organisation’s internal controls and enables proper risk management, control and governance. 

The main purpose of internal auditing is to periodically evaluate the organisation’s performance and identify the areas to improve in the future. They detect frauds, errors and improper conduct to be rectified by the organisation. By identifying such counterproductive activities, they ensure the proper and smooth functioning of the business. Internal auditors must conform with the IIA’s International Standards for the Professional Practice of Internal Auditing.

Though internal auditing is not obligatory, it plays a very important role in an organisation. It streamlines the regular operations, reduces the potential of fraud, provides a chance to identify and remedy the problems that might show up during external audits, saves time and money, ensures proper function of the regular business tasks and gives scope for improvement in the regular activities. 

External audit 

While an internal auditor primarily focuses on the non-financial aspects of the business, the external auditor is required to undertake an independent evaluation of the financial statements prepared by the organisation. They determine the organisation’s financial situation and provide their experienced opinion on the company’s financial statements. They also serve the shareholders by evaluating the soundness of the financial reports of the business. An external audit provides the business and the government with a check of the financial aspects of the organisation. The purpose of an external audit is to provide assurance to the investors, lenders, and other stakeholders that the company’s financial statements are materially correct and fair.

As the name suggests, external auditors are external to the organisation and have no vested interest in the business. They are guided by the international standards set by the International Auditing and Assurance Standards Board (IAASB)

The two types of audits are cohesive in nature. When conducted jointly by an organisation, they ensure the proper functioning and good governance. However, internal audit is distinct from external audit, and both have their own value. In order to better understand the two types of audits, it is essential to look at their areas of differences one by one. 

Key distinctions between internal audit and external audit

There exist several differences in the role and boundaries of work performed during internal and external audits. They are often overlooked or misunderstood by the stakeholders. These differences are summarized below under specific heads. 

Appointment of the auditor 

Reporting responsibilities 

Audit purpose 

Audit focus 

Audit objective

Audit scope

Obligation and frequency of the audit 

End-users of the audit report

Auditor’s skills

Auditing standards 

In order to ensure that the purpose of conducting an audit is fulfilled and to avoid bias, it is required that the auditors follow certain principles and standards for both internal and external audits. However, these standards differ for the two types of audits. 

Internal auditors are required to comply with the standards set out by The Institute of Internal Auditors for the Professional Practice of Internal Auditing. External auditors in India are required to conform with the standards set by the Institute of Chartered Accountants in India to ensure quality control and proper auditing and reviews

While the purpose, focus, scope and outcomes vary, the internal and external auditors often share their results to improve the outcome of the audits. To understand the compatibility between the two, it is essential to look at the areas of overlap between the two. 

Coordinating internal and external audits

Despite the interest, roles and responsibilities of the two audits being distinct, they often overlap at some point. These overlaps include effective analysis of transactions, becoming intimately familiar with an organisation’s governance, risk management, and internal control systems, and sharing and developing accurate final reports. Due to the existence of these overlaps, ensuring appropriate and regular communication and sharing of information between the two audits benefits the organisation. It also avoids duplication of the same data and improves the scope and quality of the audit. 

Both internal and external audits play a significant role in the effective governance and functioning of the organisation. It is highly recommended that all firms conduct regular internal audits to keep the business activities under check in addition to external audits. This indicates that in order to ensure the best results, both these audits must be conducted by the organisations. 

Therefore, despite the several distinctions between the two kinds of audits, they are not in conflict with each other. Rather, they are complementary to each other. This means that in order to ensure effective governance of the organisation, both the audits are crucial and must meet at some point and work together. 

External auditors might utilise the wide-ranging understanding of the organisation’s activities and risks mentioned in the internal auditors’ report. This will help the external auditor to better and clearly understand the business functions and the areas prone to risk. Internal auditors and ensure their report is simple and precise. They can also provide regular suggestions to avoid certain risks.

However, it is essential that the internal and external auditors must maintain clear boundaries and preserve independence and objectivity to ensure the purpose of the audit is fulfilled in the right manner. Keeping clear boundaries between the work and scope of the audits also ensures that the outcome of the audits are distinct and do not overlap. This ensures that the quality of the audits is not compromised due to coordination between the two audit types.

Conclusion 

Auditing is an essential task and the key to improvement and good governance in an organisation. While the internal and external audits vary in several aspects such as scope, functions, uses, objectives, etc, they do not work in isolation. Though internal auditing is voluntary, it is highly recommended that the organisations undergo both types of auditing to ensure maximum benefits from the process. 

The two kinds of audits often demand communication and coordination as they both have their own individual value and expertise. Due to having different objectives and expertise, they complement each other’s functions and increase the quality of the audits. However, in order to ensure independence, they must work according to the respective standards.

Therefore, there is a need for an appropriate sharing of information between internal and external auditors to develop a constructive relationship that benefits the organisation. Both types of audits, together, keep the organisation running effectively and efficiently. 

References 


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