Setting Aside an Arbitration Award in Malaysia (2026): Grounds, 90‑day Limit & AIAC Rules

Setting aside an arbitration award in Malaysia is the sole recourse available to a dissatisfied party under the Arbitration Act 2005 (Act 646), and the process is governed entirely by Section 37 of that statute. With the Arbitration (Amendment) Act 2024 taking effect on 1 January 2026 and the AIAC Suite of Rules 2026 reshaping institutional arbitration practice, in-house counsel and arbitration practitioners face a materially altered landscape. This guide explains the statutory grounds, the strict 90‑day filing deadline, the step-by-step High Court procedure under Order 69, and the practical interplay between the new AIAC Rules 2026 and set-aside strategy.

Whether you are an award‑debtor evaluating a challenge or an award‑creditor seeking to defend enforcement, the checklist below should be your starting point.

Quick Checklist, Immediate Actions on Receipt of an Award

The moment an arbitral award is received, time begins running against the dissatisfied party. Every day of delay narrows tactical options. The following actions should be taken within the first 48 hours:

• Compute the 90‑day deadline. Section 37(4) of the Arbitration Act 2005 provides that an application to set aside an arbitral award may not be made after the expiry of 90 days from the date on which the applicant received the award. Calendar the exact date immediately.
• Preserve evidence. Secure the complete arbitral record, transcripts, procedural orders, correspondence and exhibits, before any confidentiality restrictions or document-return obligations take effect.
• Consider an interim injunction. If there is a risk that the award‑creditor will dissipate assets or enforce the award abroad before your challenge can be heard, assess the merits of an urgent application for injunctive relief.
• Notify AIAC (if applicable). Where the arbitration was administered under AIAC Rules, check whether any institutional remedies, such as requests for correction, interpretation or an additional award, are available and whether they interact with the 90‑day clock.
• Retain specialist counsel. Setting aside applications are governed by a narrow set of statutory grounds and demand precision in drafting. Early engagement of counsel experienced in Section 37 practice is essential.
• Evaluate settlement. Before committing to litigation, perform a cost-benefit analysis that accounts for enforcement risk, cross-border complications and the realistic likelihood of success on the available grounds.

Can You Set Aside an Arbitral Award in Malaysia?, Short Answer

Yes, but only on limited, exhaustive grounds prescribed by Section 37 of the Arbitration Act 2005. Malaysian courts consistently adopt a pro‑arbitration, non‑interventionist approach, meaning that a set-aside application is not an appeal on the merits. The court will not re-examine the tribunal’s findings of fact or re-weigh evidence. Instead, the applicant must demonstrate a specific procedural or jurisdictional defect, such as a breach of natural justice, lack of jurisdiction or a conflict with public policy. Even where such a defect is proven, the court retains discretion and is not obliged to set aside the award. Industry observers expect this threshold to remain firmly enforced in the post-2026 statutory environment, reinforcing Malaysia’s reputation as an arbitration-friendly seat.

The Statutory Framework, Arbitration Act 2005, Amendment Act 2024 & Order 69 Procedure

The statutory architecture for setting aside arbitration awards in Malaysia rests on three pillars: the Arbitration Act 2005 (as amended), the Rules of Court 2012 (Order 69), and, for institutionally administered cases, the AIAC Rules. Understanding how these instruments interact is foundational to any challenge strategy.

Section 37: Grounds and Court Discretion

Section 37 of the Arbitration Act 2005 is modelled on Article 34 of the UNCITRAL Model Law on International Commercial Arbitration. It divides the grounds for setting aside into two categories. First, grounds that the applicant must prove (Section 37(1)), which include incapacity of a party, invalidity of the arbitration agreement, lack of proper notice, the award dealing with matters beyond the scope of submission, and defects in the composition of the tribunal or the arbitral procedure. Second, grounds the court may raise of its own motion (Section 37(2)), namely that the subject matter is not arbitrable under Malaysian law, or that the award conflicts with the public policy of Malaysia.

Critically, the court’s discretion under Section 37(1) is unfettered, establishing a ground does not automatically result in the award being set aside.

Order 69, Rules 4–5 and Form 5 Originating Summons Practice

An application to set aside an award must be commenced by way of originating summons using Form 5 under the Rules of Court 2012. Order 69, Rule 4(1) prescribes the required content of the summons, including identification of the arbitration agreement, the award challenged, and the specific grounds relied upon. The applicant must file supporting affidavit evidence. Service must comply with Order 69, Rule 5, and the application is heard by a High Court judge. Practitioners should note that the form and content requirements are strictly enforced, non-compliance can be fatal to the application.

Key Amendments Introduced by the Arbitration (Amendment) Act 2024

The Arbitration (Amendment) Act 2024 (A1737), which commenced on 1 January 2026, introduces targeted amendments that affect set-aside practice. Early indications suggest the amendments refine court powers and procedural definitions, strengthen alignment with the UNCITRAL Model Law, and address transitional matters for awards rendered before commencement. Practitioners should verify whether the amended provisions apply to pending proceedings or only to arbitrations commenced after 1 January 2026, as this has direct implications for deadline computation and available grounds. Those comparing Malaysia’s framework with other jurisdictions will find it useful to consider how arbitration and litigation differ in practical terms.

Grounds to Set Aside Under Section 37, Detailed Analysis

Each statutory ground for setting aside an arbitration award in Malaysia imposes a distinct evidential burden. The following analysis maps the four principal categories that practitioners encounter most frequently.

Lack of Jurisdiction (Section 37(1)(a))

A party may seek to set aside an award on the basis that the arbitral tribunal lacked jurisdiction, either because there was no valid arbitration agreement, because the tribunal exceeded the scope of the submission to arbitration, or because the award deals with a dispute not contemplated by the arbitration clause. Jurisdictional challenges must generally be raised before the tribunal itself at the earliest opportunity. A party that participates in the arbitration without objection and then raises jurisdictional arguments only at the set-aside stage risks having its application dismissed as an afterthought. Malaysian courts have consistently held that failure to object promptly can amount to a waiver of the right to challenge on jurisdictional grounds.

Practitioners should therefore lodge formal jurisdictional objections at the earliest procedural stage and preserve them throughout the proceedings.

Breach of Natural Justice and Procedural Unfairness (Section 37(1)(b))

Breach of natural justice is the most frequently invoked ground for setting aside arbitration awards in Malaysia. The test, as articulated by the Federal Court, requires the applicant to establish four elements: first, identify the rule of natural justice that was breached; second, show how the breach occurred during the arbitral proceedings; third, demonstrate that the breach was connected to the making of the award; and fourth, prove that prejudice resulted to the applicant’s rights. The Federal Court has set out guiding principles confirming that a mere irregularity or procedural imperfection is insufficient, the breach must be material and must have affected the outcome.

Courts will not intervene simply because the tribunal preferred one party’s evidence over another or because a party disagrees with the tribunal’s reasoning. The High Court’s discretion remains central: even where a breach is established, the court may decline to set aside the award if no real prejudice is shown.

Public Policy, Corruption and Fraud (Section 37(2))

The public policy ground under Section 37(2)(b) is deliberately narrow in Malaysian arbitration law. Courts have consistently interpreted “public policy” restrictively, limiting it to situations where the award would shock the conscience, be clearly injurious to the public good, or wholly offensive to ordinary reasonable members of the public. Allegations of corruption or fraud in the making of the award may ground a challenge, but the evidential threshold is high. Mere suspicion is insufficient, concrete evidence of impropriety in the arbitral process is required. A party alleging fraud must show that the fraud was not discoverable during the arbitration and that it materially affected the award.

Composition of Tribunal and Invalid Arbitration Agreement (Section 37(1)(c))

An award may be challenged where the composition of the arbitral tribunal did not accord with the agreement of the parties, or where the arbitration agreement itself was invalid under the law to which the parties subjected it. In practice, challenges on these grounds often arise where a party objects to the appointment process, for example, where an arbitrator was appointed by a third party or institution without proper authority, or where an arbitrator’s independence or impartiality was compromised. Malaysian courts have held, however, that a party who becomes aware of a composition defect during the arbitration and continues to participate without objection may be treated as having waived the right to challenge. Timely objection is therefore essential.

Timelines, the 90‑Day Rule and Extensions for Setting Aside Arbitration Awards in Malaysia

Section 37(4) of the Arbitration Act 2005 imposes a strict limitation: an application to set aside an arbitral award may not be made after the expiry of 90 days from the date on which the applicant received the award. This deadline is a hard cut-off, and Malaysian courts have shown little appetite for extending it.

The 90‑day computation works as follows:

• Step 1: Identify the date on which the award was received by the applicant (not the date of the award itself, if different).
• Step 2: Count 90 calendar days forward. If the 90th day falls on a weekend or public holiday, the deadline may extend to the next business day under general rules of court practice, but this should never be relied upon as a planning assumption.
• Step 3: File the originating summons (Form 5) at the High Court registry before expiry of the 90th day.

Example: If an award is received on 15 March 2026, the 90‑day deadline expires on 13 June 2026. Any application filed on 14 June 2026 or later is out of time.

Where a party has requested the tribunal to make a correction, interpretation or additional award under Section 35 or Section 36 of the Act, the 90‑day period runs from the date on which the tribunal disposes of that request. This interaction is particularly important under the AIAC Rules 2026, which prescribe specific timelines for institutional correction procedures. Practitioners must track both the institutional timeline and the statutory 90‑day clock simultaneously to avoid missing the filing window.

AIAC Rules 2026, Institutional Procedures That Affect Set‑Aside Strategy

The AIAC Suite of Rules 2026, published in October 2025, introduces significant institutional reforms that have a direct bearing on setting aside arbitration awards in Malaysia. Parties arbitrating under AIAC administration must account for these changes when formulating challenge strategy.

Summary Determination and Expedited Deadlines

The AIAC Arbitration Rules 2026 formalise a summary determination procedure, enabling tribunals to dispose of claims or defences that are manifestly without merit at an early stage. Under the new rules, such determinations must be rendered within a compressed timeframe. The likely practical effect is that awards, or award-like decisions, may be issued faster than under previous rule sets, accelerating the start of the 90‑day set-aside window. Parties should be alert to whether a summary determination constitutes a final “award” capable of challenge under Section 37, or whether it is an interlocutory decision that falls outside the set-aside regime. This distinction can be outcome-determinative.

AIAC Court and Institutional Governance Changes

The AIAC Rules 2026 establish an AIAC Court of Arbitration, designed to strengthen institutional governance and align AIAC with leading global arbitral institutions. The AIAC Court exercises supervisory functions including the appointment, challenge and replacement of arbitrators. For set-aside strategy, this matters because challenges to an arbitrator’s appointment or independence may now be resolved institutionally before reaching the High Court. A party that fails to exhaust available institutional remedies, such as an arbitrator challenge before the AIAC Court, risks having its subsequent court application criticised as premature. Practitioners should also note that the new rules affect applications for correction, interpretation or additional awards, which can interact with the 90‑day deadline as discussed above.

Staying current with institutional rules updates globally provides useful comparative context.

Procedure to Apply to Set Aside, Step by Step

The High Court procedure for setting aside an arbitration award in Malaysia follows a structured sequence under Order 69 of the Rules of Court 2012. The key steps are:

• Prepare the originating summons (Form 5). The summons must identify the parties, the arbitration agreement, the award challenged, the specific Section 37 grounds relied upon, and the relief sought.
• Draft supporting affidavit(s). The affidavit should exhibit the arbitration agreement, the award, relevant correspondence, procedural orders and hearing transcripts. Where natural justice is alleged, the affidavit must trace the breach through the procedural history and demonstrate prejudice.
• File at the High Court registry. Ensure filing occurs within the 90‑day period. Obtain sealed copies for service.
• Serve on the respondent and AIAC (if applicable). Comply with Order 69, Rule 5 service requirements. Serve on the opposing party and, where the arbitration was AIAC-administered, notify the institution.
• Attend case management. The court will schedule directions and, where appropriate, fix the application for hearing. Prepare skeleton submissions and a bundle of authorities.
• Hearing and decision. The High Court hears the application on affidavit evidence. Oral evidence is rarely permitted. The court issues its decision, which is subject to appeal.

How to Seek a Stay of Enforcement

A pending set-aside application does not automatically stay enforcement of the award. The applicant must seek a stay separately, typically by way of an interlocutory application supported by evidence of irreparable harm and balance of convenience. The court may order security as a condition of the stay. Practitioners should prepare stay applications concurrently with the set-aside filing to avoid enforcement proceeding in the interim.

What Happens When an Arbitral Award Is Set Aside? Consequences and Enforcement Implications

When an arbitral award is set aside by the Malaysian High Court, the award ceases to be enforceable as a domestic award. The practical consequences depend on whether the award is domestic or international and whether enforcement is sought in Malaysia or abroad.

For domestic awards, a successful set-aside application effectively nullifies the award. The parties may agree to re-arbitrate, negotiate a settlement, or pursue their claims through litigation. The set-aside does not extinguish the underlying cause of action.

For foreign awards, the analysis is more complex. If an award is set aside at its seat of arbitration, a party seeking recognition and enforcement of that award in Malaysia under the Convention on the Recognition and Enforcement of Foreign Arbitral Awards (New York Convention), as implemented through the Arbitration Act 2005, may face a refusal of enforcement. However, Malaysian courts retain discretion under the Act and the Reciprocal Enforcement of Judgments Act 1958 (REJA) to consider the circumstances of the set-aside. The interplay between the enforcement of foreign arbitral awards under the Arbitration Act 2005 and recognition under REJA requires careful analysis on a case-by-case basis.

Connecting with a qualified Malaysian arbitration lawyer at the earliest opportunity is critical for cross-border enforcement matters.

Practical Tactics and Strategic Checklist for Parties and Counsel

Whether you are the award‑debtor considering a challenge or the award‑creditor defending enforcement, strategic planning begins before the application is filed.

For the award‑debtor (challenging the award):

• Focus on the narrowest, strongest ground, courts respond poorly to scattergun applications that raise every conceivable objection without evidential substance.
• Preserve the arbitral record immediately upon receipt of the award. Once confidentiality obligations or document-return deadlines pass, access to critical evidence may be lost.
• Compute costs realistically. A set-aside application that fails not only leaves the original award intact but may result in an adverse costs order.
• Consider whether institutional remedies (such as correction or additional award requests) should be pursued first, and how those timelines interact with the 90‑day statutory window.

For the award‑creditor (defending the award):

• Ensure the arbitral process was meticulously documented, comprehensive hearing transcripts, clear procedural orders and reasoned awards are the best defence against natural justice challenges.
• Challenge jurisdiction early if there is any doubt about the validity of the arbitration agreement, and ensure objections are recorded on the tribunal’s record.
• Prepare to enforce promptly. File for enforcement under Section 38 concurrently with the anticipated challenge window to create procedural pressure.
• If a stay is sought, insist on security as a condition to protect against delay tactics.

Timeline of Key Legislative and Institutional Dates

Key Precedents and Authorities

The following decisions represent the leading Malaysian authorities that shape Section 37 practice. Practitioners preparing set-aside applications or defending against them should be familiar with the principles established in these cases:

• Federal Court guidance on natural justice (2021). The Federal Court set out guiding principles on setting aside arbitral awards on grounds of breach of natural justice, establishing a four-part test: identify the rule breached, show how it was breached, connect the breach to the award, and demonstrate prejudice.
• High Court decisions on partial set-aside. Malaysian courts have considered whether an award can be partially set aside under Section 37(1) while preserving the remainder, with decisions clarifying the scope of Section 37(3) in separating severable issues.
• Court of Appeal on the pro-arbitration policy. The appellate courts have repeatedly affirmed the policy of minimal curial intervention, holding that setting aside is not a mechanism for re-litigating the merits and that courts should be slow to disturb an arbitrator’s findings of fact or law.
• Jurisdictional challenges and afterthoughts. Multiple High Court decisions have dismissed jurisdictional challenges raised for the first time at the set-aside stage, confirming that objections must be made before the tribunal at the earliest opportunity.

Consulting the Global Law Experts directory can connect parties with practitioners who are current on the latest judicial developments.

Conclusion

Setting aside an arbitration award in Malaysia demands precision, speed and an intimate understanding of Section 37’s narrow grounds. The 90‑day filing deadline is unforgiving, the courts are resolutely pro-arbitration, and the 2026 amendments, both statutory and institutional under the AIAC Rules, introduce new procedural dynamics that every practitioner must master. Parties facing a Malaysia‑seated award should act within the first 48 hours to preserve rights and evaluate options. For tailored guidance on a specific set-aside or enforcement matter, connect with an experienced Malaysian arbitration practitioner through Global Law Experts.

Sources

1. AIAC, AIAC Suite of Rules 2026 (Official Overview)
2. AIAC Arbitration Rules 2026 (Official PDF)
3. Global Arbitration Review, Challenging and Enforcing Arbitration Awards: Malaysia
4. Rahmat Lim & Partners, Federal Court Guiding Principles on Setting Aside (Natural Justice)
5. ICLG, International Arbitration Laws and Regulations: Malaysia
6. Cecil Abraham & Partners, Challenging and Enforcing Arbitration Awards in Malaysia
7. Pelim.my, 6 Things About Setting Aside Arbitral Awards