First published in The Business Times on August 15, 2019

By Mak Yuen Teen, Zhu Zinan and Chew Yi Hong

On August 6, 2018, a revised Code of Corporate Governance was released by the Monetary Authority of Singapore (MAS) and certain corporate governance practices were made mandatory for all listed companies through changes to the listing rules of the Singapore Exchange (SGX). Starting from January 1, 2019, the SGX Rulebooks for both Mainboard and Catalist companies require that all companies “must establish and maintain on an ongoing basis, an effective internal audit function that is adequately resourced and independent of the activities it audits”. This follows enhancements in the guidelines on internal audit (IA) in earlier revisions of the Code of Corporate Governance.

The IA function is a critical part of the third line of defence in a company’s internal control and risk management system. An adequately resourced IA function which is functionally independent of management and has the appropriate stature can provide independent assurance about the adequacy and effectiveness of the internal control and risk management system and help the board discharge its fiduciary responsibilities. Yet, despite its importance, IA has received far less attention from companies, investors and regulators compared to external audit.

IA TRENDS AND IMPACT

A study of SGX-listed companies by Mak Yuen Teen, Zhu Zinan and Low Chin Yang found that between 2011 and 2014, the percentage of companies that disclosed that they have an IA function increased and averaged about 92 per cent over the years. Between 26.2 and 28.5 per cent of companies that disclosed having an IA function had it in-house, while those having an outsourced IA function increased from slightly more than 65 per cent to just below 70 per cent over the years. The remaining companies did not disclose whether it was in-house or outsourced. Companies having an in-house IA function may complement it with some outsourcing in order to tap on competencies that are not available in-house.

There are pros and cons to having an in-house and outsourced IA function. At the risk of over-simplification, it involves a trade-off between specialised knowledge and independence. An in-house IA function may have better knowledge about the company but may also be more likely to be co-opted by management or assigned line or other responsibilities that are incompatible with its independent assurance role.