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🧭 Practical ✓ Published: 8 Aug 2026 4 min read Next review 8 Aug 2027

Why Auditors Scrutinise Related Party Transactions

A sale to a director's own company can be perfectly ordinary — or the vehicle for a fraud. ISA 550 tells the auditor how to tell the two apart, and MFRS 124 plus Bursa Chapter 10 decide what must be disclosed and approved.

30-second answer Reviewed 8 Aug 2026

Related party transactions are dealings between an entity and parties that control, are controlled by, or share common control or key management with it. Many are routine, but they are the classic channel for tunnelling assets, propping up profit, and disguising fraud, so ISA 550 (Related Parties) requires the auditor to inquire into them, treat any significant ones outside the normal course of business as a significant risk, inspect the underlying contracts, test authorisation, and obtain written representations. In Malaysia the disclosure standard is MFRS 124, and listed issuers face a further governance layer under Bursa Malaysia Main Market Listing Requirements Chapter 10.

  • ISA 550, as applied in Malaysian audits, is effective for audits of financial statements for periods beginning on or after 15 December 2009
  • ISA 550 paragraph 18 requires the auditor to treat identified significant related party transactions outside the entity's normal course of business as giving rise to significant risks
  • The financial-reporting disclosure framework is MFRS 124 Related Party Disclosures, the Malaysian equivalent of IAS 24, effective for annual periods beginning on or after 1 January 2012
  • An arm's length transaction is defined in ISA 550 paragraph 10 as one between a willing buyer and willing seller who are unrelated and acting independently in their own best interests
  • Listed issuers must also route recurrent related party transactions of a revenue or trading nature through a shareholders' mandate under Bursa Chapter 10 paragraph 10.09

Who this applies to: Investors reading Malaysian financial statements, audit committee members, directors and finance staff who need to distinguish routine related party dealings from those that warrant special scrutiny.

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Full explanation ≈4 min

A company sells crude palm oil to another company owned by its own major shareholder. Nothing on the invoice says whether that is an ordinary supply arrangement or the first step in draining value out of minority shareholders. The auditor’s job is to find out which — and that is exactly what International Standard on Auditing 550, Related Parties, is written for.

ISA 550 paragraph 10 points to the definition in the applicable financial reporting framework, which in Malaysia is MFRS 124 Related Party Disclosures — the local equivalent of IAS 24, effective for annual periods beginning on or after 1 January 2012. Broadly, a related party is one that controls, is controlled by, or is under common control with the entity, together with key management personnel and their close family members.

The same paragraph defines the benchmark the whole exercise turns on. An arm’s length transaction is one conducted “as between a willing buyer and a willing seller who are unrelated and are acting independently of each other and pursuing their own best interests.” The worry with a related party is precisely that this independence may be missing.

Why single these transactions out?

Because they are the classic machinery of financial statement fraud. ISA 550 paragraph 2 is candid that many related party transactions are ordinary and no riskier than dealings with strangers. But the standard also warns that related party transactions may not be conducted under normal market terms, and that the relationships can present a greater opportunity for collusion, concealment or manipulation.

That is why paragraph 18 draws a bright line: the auditor must treat identified significant related party transactions outside the entity’s normal course of business as giving rise to significant risks — the highest tier of audit attention, requiring a specific response.

What does the auditor actually do?

ISA 550 sets out a ladder from routine inquiry to targeted testing. The table maps the main requirements.

StageWhat ISA 550 requiresReference
InquiryAsk management for the identity of related parties, the nature of the relationships, and whether transactions occurredPara 13
Understand controlsUnderstand how the entity identifies, authorises and approves related party transactionsPara 14
Stay alertWhile inspecting records, watch for undisclosed relationships — bank and legal confirmations, board and shareholder minutesPara 15
Assess riskTreat significant transactions outside the normal course of business as significant risksPara 18
Test the outliersInspect underlying contracts, evaluate business rationale for fraud, and obtain evidence of authorisation and approvalPara 23
Challenge assertionsWhere management claims a transaction was at arm’s length, obtain sufficient appropriate evidence for that claimPara 24
Get it in writingObtain written representations that all related parties and transactions have been disclosed and properly accounted forPara 26
Report upCommunicate significant related party matters to those charged with governancePara 27

The pivotal step is paragraph 23. For a significant transaction outside the ordinary course of business, the auditor inspects the contract, asks whether the business rationale — or lack of one — points to fraudulent financial reporting or concealed misappropriation of assets, checks that the terms match management’s story, and confirms the transaction was properly authorised.

Where does Bursa Malaysia add another layer?

Financial reporting and auditing are only two of three layers for a listed issuer. The third is corporate governance under the Bursa Malaysia Main Market Listing Requirements.

LayerInstrumentWhat it governs
DisclosureMFRS 124What the financial statements must reveal about related parties and their transactions
AuditISA 550How the auditor identifies, assesses and responds to the risk of misstatement
GovernanceBursa Chapter 10When a listed issuer must announce, circularise or seek shareholder approval, with interested parties abstaining

Under Chapter 10, recurrent related party transactions of a revenue or trading nature are typically run through a shareholders’ mandate renewed at each annual general meeting, as paragraph 10.09 contemplates. A one-off related party transaction can, depending on its size measured by the percentage ratios in paragraph 10.02, require an immediate announcement, a circular to shareholders, and prior approval in general meeting — with the interested director or major shareholder barred from voting.

What should an investor look for in the notes?

Read the related party note against this checklist. Are the pricing terms stated, and do they claim to be at arm’s length — if so, on what basis? Are recurrent transactions covered by a current shareholders’ mandate? Did any transaction sit outside the ordinary course of business, and was it independently approved? Silence, vague “market terms” language, or a large balance owed by a director-linked entity are the signals ISA 550 is designed to surface.

What’s next

If a related party transaction looks material to your decision, trace it through all three layers: the MFRS 124 disclosure note, any Chapter 10 announcement or circular on the Bursa Malaysia website, and the audit opinion itself. To see how these dealings feed into the wider audit, read the statutory audit process and how the auditor forms an opinion; where a related party propped up a struggling business, going concern is the connected risk to check next.

Frequently asked 4
Are all related party transactions a red flag?

No. ISA 550 paragraph 2 acknowledges that many related party transactions are in the normal course of business and may carry no higher risk of material misstatement than similar transactions with unrelated parties. The concern is specific: transactions that are significant and outside the normal course of business, or that are not conducted on normal market terms.

What does the auditor actually do differently for these transactions?

For an identified significant related party transaction outside the normal course of business, ISA 550 paragraph 23 requires the auditor to inspect the underlying contracts or agreements, evaluate whether the business rationale suggests fraudulent financial reporting or concealment of misappropriation, check the terms against management's explanations, and obtain evidence that the transaction was appropriately authorised and approved.

Can management just assert a deal was at arm's length?

Not without evidence. Under ISA 550 paragraph 24, if management asserts in the financial statements that a related party transaction was on terms equivalent to an arm's length transaction, the auditor must obtain sufficient appropriate audit evidence about that assertion. The standard notes it is often practically difficult to prove every aspect of a transaction matched an arm's length one.

How is this different from the Bursa Malaysia rules?

They are separate layers. ISA 550 governs the audit; MFRS 124 governs what must be disclosed in the financial statements; and Bursa Chapter 10 governs corporate action — when a listed issuer must announce a transaction, issue a circular, or obtain prior shareholder approval, with interested directors and major shareholders abstaining.

Sources & history 3 sources
⚑ Awaiting expert verification

The following are deliberately unstated or described only qualitatively until confirmed by a subject-matter expert:

  • Confirm the current Bursa Malaysia Main Market Listing Requirements still number the percentage ratios at paragraph 10.02 and the recurrent related party transaction shareholders' mandate at paragraph 10.09 in the version current at publication (the cited extract is dated 31 October 2025).
  • Confirm the Malaysian Institute of Accountants (MIA) adoption of ISA 550 is textually identical to the IAASB source text for every paragraph relied on (paras 2, 10, 13, 14, 15, 18, 23, 24, 26, 27).
  • Confirm the IFAC-hosted ISA 550 handbook PDF remains live; if not, substitute the IAASB publications page or the then-current IAASB Handbook volume.

Sources

  1. International Standard on Auditing 550, Related Parties (2013 IAASB Handbook) — International Auditing and Assurance Standards Board (IAASB) / IFAC
  2. MFRS 124 Related Party Disclosures (MFRS Framework listing; issued 19 Nov 2011, effective 1 Jan 2012) — Malaysian Accounting Standards Board (MASB)
  3. Main Market Listing Requirements, Chapter 10 (Transactions) — Related Party Transactions — Bursa Malaysia Securities Berhad

Change history

Version Date Change By
01.00 8 Aug 2026 Approved and published.
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