Internal Audit Misconceptions Among MAS-Regulated Capital Markets Services License Holders

Regulatory Updates

October 16, 2026

Internal Audit Misconceptions Among MAS-Regulated Capital Markets Services License Holders

For Capital Markets Services License (CMSL) holders, having appropriate policies and procedures is only the starting point of a sound control framework. The true test lies in implementation, and this is where internal audit plays a critical role. An effective internal audit helps firms move beyond simply having controls on paper to demonstrating that those controls are appropriately designed, implemented and administered effectively in their day-to-day business operations.

 

Why Does an Internal Audit Matter?

An internal audit provides an independent assessment of whether the controls established by the CMSL holders are appropriately designed and operating as intended.

Under the widely recognized Three Lines Model, the business and operational teams typically form the first line of defense and are responsible for managing risks and operating controls on a day-to-day basis. The compliance function, acting as the second line of defense, generally focuses on providing compliance advice, monitoring adherence to applicable laws and regulations, and identifying potential compliance breaches. Finally, the internal audit function, acting as the third line of defense, takes a broader view of the overall control environment, aimed at independently identifying and shoring up areas of weakness in both the compliance and operational frameworks (i.e., the first two lines of defense).

A well-designed internal audit program, therefore, helps answer an important question: Can we demonstrate that our internal controls are not merely documented but are working effectively in practice?

MAS Requirements and Expectations on Internal Audit

For CMSL holders operating in Singapore, internal audit is not simply a “nice-to-have” governance practice. This regulatory requirement supports the firm’s ability to meet the Monetary Authority of Singapore’s (MAS) requirements and expectations regarding sound governance and an effective risk management and control framework.

Regulation 13 of Singapore’s Securities and Futures (Licensing and Conduct of Business) Regulations requires the business activities of a CMSL holder to be subject to adequate internal audit, further stating that such an internal audit includes inquiring into its compliance with all relevant laws. Importantly, the MAS does not prescribe a one-size-fits-all approach; instead, the MAS expects a firm’s internal audit framework to be risk-based, proportionate and appropriate to the firm’s size, nature and complexity of business operations.

That said, the MAS has stipulated specific audit requirements for business continuity management (BCM). Specifically, financial institutions are required to conduct a BCM audit at least once every three years to ensure that operational resilience remains adequate and effective. Following the issuance of the Guidelines on BCM in June 2022, financial institutions were expected to complete their first BCM audit by June 2024. Accordingly, for firms that completed their BCM audit in 2024, the next BCM audit cycle is expected to fall due in 2027.

The MAS also recognized that the internal audit may be performed by an in-house internal audit function, group internal audit team or independent third-party service providers. For smaller CMSL holders, outsourcing their internal audit function to an independent third-party service provider is often considered a practical and cost-effective solution while maintaining the necessary level of independence and expertise.

Common Internal Audit Misconceptions Explained

Despite established MAS regulatory requirements and expectations around internal audit, in practice, we have observed several common misconceptions among CMSL holders when establishing and maintaining an effective internal audit arrangement.

 

Our Annual Financial Audit Covers Internal Audit

This is perhaps one of the most common misunderstandings. The annual external audit does not satisfy the MAS requirement for an internal audit.

While external auditors may review certain internal controls as part of their annual audit procedures, their work is not designed to provide a comprehensive evaluation of governance and risk management and control frameworks given that their primary objective is to express an opinion on the firm’s financial statements. Therefore, an external audit should not be viewed as a substitute for an internal audit.

Notably, external auditors commonly request to review the results of completed internal audits and any required post-audit remediation as part of the limited internal control reviews they may undertake.

 

We Have Policies and Compliance Monitoring in Place, so Our Controls Are Covered

Implementing a compliance function and formally documenting policies and procedures is certainly important, although it does not eliminate the need for internal audit.

While a compliance function constitutes the second line of defense by establishing the policies on the intended internal controls framework and monitoring ongoing adherence to regulatory requirements, internal audit, as the third line of defense, independently assesses whether these controls function effectively in practice. Each serves a distinct role, and together they comprise a robust governance and controls environment. Accordingly, neither compliance monitoring nor documented policies should be regarded as a replacement for an independent internal audit function.

 

We Can Limit the Scope of Internal Audit to Areas We Choose

Another common misconception is that internal audit can be confined to a single operational area of the firm’s choosing, such as accounting or finance processes.

On the contrary, the MAS requirement is much broader. Internal audit should encompass overall business activities and operations and should include inquiries into whether such activities and operations comply with applicable laws and regulations. As such, the audit scope should be risk-based and sufficiently comprehensive to cover key areas of the governance, risk management and control framework including, among others, advisory/portfolio management activities, controls to prevent money laundering and the financing of terrorism, conflicts of interest, BCM and operational resilience, key operational risks and outsourcing.

A narrowly scoped review that focuses only on selected functions while excluding material regulatory and operational risks may not provide adequate assurance and may fall short of the MAS requirements and expectations.

 

We Can Simply Conduct the Same Audit Every Year

A further common misconception is that once an internal audit program has been established, the same audit scope can be repeated year after year.

In reality, effective internal audit programs evolve with the risk profile and business of the given firm. Changes in investment strategies and products, personnel, technology and regulatory requirements may introduce new risks that should be considered in an internal audit plan. Areas of heightened regulatory focus, material organizational changes and emerging risks should also be considered when determining audit priorities.

Accordingly, internal audit plans should be reviewed periodically and updated based on the given firm’s current risk landscape. A risk-based audit plan helps ensure that internal audit resources are directed toward areas of higher risk exposure.

Moving from a Tedious Compliance Exercise to Meaningful Assurance

Overall, an internal audit should not be viewed as a checklist exercise or just another regulatory obligation. In an increasingly complex regulatory environment, the ability to obtain objective assurance over higher risks is becoming more important than ever. When completed effectively, an independent internal audit serves as a valuable tool to strengthen governance and controls, identify weaknesses before they become significant issues and provide the board of directors and senior management with greater confidence in the firm’s control environment.

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