ICC arbitration rules 2026: Key amendments and their practical implications

ICC arbitration rules 2026: Key amendments and their practical implications
Arbitration under the International Chamber of Commerce (ICC) framework continue to be one of the most preferred international arbitration forums. The ICC periodically reviews its Rules of Arbitration to ensure they remain responsive to the current requirements of parties, counsel, arbitrators and the institution. The new 2026 Rules, effective from 1 June 2026, retain the core framework of ICC arbitration while introducing targeted amendments to improve efficiency, flexibility and modernise procedure. Key amendments concern case management, early disposal, expedited proceedings, disclosure, electronic procedure and emergency relief. The amendments preserve the fundamental safeguards of ICC arbitration while giving parties and tribunals clearer procedural tools and reducing certain formalities.
 

From terms of reference to an Initial case management conference

One of the clearest structural changes is the move away from mandatory Terms of Reference (“ToR”). Under Article 23 of the 2021 Rules, the tribunal was required to prepare the ToR after receiving the file, obtain the necessary signatures and submit them to the Court within thirty days. Under the 2026 Rules, the ToR is no longer mandatory and may be used where appropriate. This change reduces an additional layer of procedural formality, as the parties’ claims and defences are already set out in the Request for Arbitration and Answer, allowing the tribunal to move more directly into structured case management.

Article 24 now places the initial Case Management Conference at the centre of early procedural organisation, requiring it to be held within thirty days after the tribunal receives the file. Article 25 further provides that, after the initial Case Management Conference, new claims may be introduced only with the tribunal’s authorisation. This combined effect is to give greater procedural significance to the initial pleadings and the first CMC, as these stages now provide the principal framework for defining the scope of the dispute and organising its subsequent conduct, while reducing procedural duplication and facilitating a more efficient progression of the arbitration.
 

Early determination under article 30

Article 30 of the 2021 Rules introduces an express mechanism for Early Determination of claims and defences that are manifestly without merit or manifestly outside the tribunal’s jurisdiction. A party may apply for Early Determination, after which the tribunal decides whether the application should proceed. If the tribunal permits the application to proceed, it may determine the relevant claim or defence without requiring the dispute to follow the full procedural course that would otherwise apply.

This update can potentially help avoid unnecessary loss of time and expense for issues that can be decided in the preliminary stage. Its practical value, however, will depend on how tribunals apply the “manifestly without merit” threshold in practice.
 

Expedited procedures and the introduction of HEAP

The Expedited Procedure is retained under the 2026 Rules, with its monetary threshold increased from US$3 million to US$4 million for arbitration agreements concluded on or after 1 June 2026, which will bring many lower-value disputes within the scope of the expedited framework.

The 2026 Rules also introduce Highly Expedited Arbitration Provisions, known as HEAP, under Article 33 and Appendix VI. HEAP is administered by a sole arbitrator, with the initial Case Management Conference to be held within seven days after receipt of the file and a target for the final award within three months of that conference. HEAP is available only where all parties agree and has no monetary threshold requirement. The framework also provides for a more compressed exchange of pleadings, including filing the Request for Arbitration with the Statement of Claim and the Answer with the Statement of Defence. In appropriate cases, document disclosure requests may be refused, and parties may also agree in advance to accept an award without detailed reasoning. HEAP therefore provides a consensual institutional route for disputes requiring a significantly shorter timetable.
 

Enhanced disclosure, conflicts and confidentiality

The 2026 Rules strengthen the disclosure framework surrounding arbitrator independence and impartiality. Article 12(2) clarifies that where an arbitrator is uncertain whether a circumstance should be disclosed, the doubt is to be resolved in favour of disclosure. At the same time, Article 12(4) of the Rules makes clear that a disclosure does not, by itself, establish a lack of independence or impartiality.

Article 12(5) requires each party to provide the Secretariat with a list of persons and entities that the party believes prospective arbitrators and arbitrators should consider for conflict-check purposes (such as corporate group entities, counsel, funders, or other relevant individuals or entities) together with the reasons, so that potential conflicts of interest can be identified at the outset. Article 12(8) also establishes an express duty of confidentiality for arbitrators in relation to the arbitration and their functions. In practice, these provisions place greater emphasis on comprehensive conflict checks at the outset of an arbitration, particularly where corporate groups, third party funders or other connected persons and entities are involved.
 

Electronic communications and hybrid proceedings

Article 3 modernises the manner in which communications with the Secretariat are conducted by establishing electronic means as the standard method, subject to the exceptions provided by the Rules. The amendment reflects the way international arbitration is already administered in practice and reduces reliance on physical transmission of documents.

The 2026 Rules also expressly recognise electronic and hybrid methods in the conduct of proceedings. Articles 19 and 27 provide greater clarity regarding remote participation in hearings and tribunal deliberations. This gives tribunals an express procedural basis to use physical, remote or combined formats where appropriate. For parties operating across jurisdictions, the change can reduce logistical burdens while preserving the tribunal’s ability to determine the procedure according to the circumstances of the case.
 

Appointment criteria and tribunal expertise

The 2026 Rules also give greater express recognition to the experience and expertise of prospective arbitrators as part of the appointment and confirmation process under Article 14. The change is relevant where a dispute involves specialised subject matter, complex technical evidence or a particular commercial sector. Parties should therefore approach nominations with greater attention to the experience and expertise that may be required for the dispute.
 

Appointment of tribunal secretary

Article 44 formally recognises and regulates the role of the Tribunal Secretary. The tribunal has the power to appoint a Tribunal Secretary after consulting the parties to assist it in the proceedings. The Tribunal Secretary must act under the direction and control of the tribunal and has no decision-making authority. The same independence, impartiality and confidentiality requirements applicable to arbitrators apply to the Tribunal Secretary. The provision provides clear procedural safeguards and defined limits for the Tribunal Secretary’s role.
 

Awards and procedure

The provisions concerning the time limit of the final award under have also been amended. Under the 2021 Rules, the final award was subject to a fixed default period of six months from the signing of the Terms of Reference, the 2026 Rules remove this fixed period. Instead, under Article 34 the President determines or extends the applicable timetable by reference to the procedural timetable or a reasoned request from the arbitral tribunal. This allows the timeline for the award to be managed in a manner that reflects the complexity and procedural requirements of the particular arbitration.

Article 38 further confirms the ability to use electronic signatures, electronic counterparts and electronic notification of awards. The amendment supports a more fully digital arbitral process and facilitates the electronic execution and notification of awards. Parties should continue to consider any mandatory requirements that may apply at the place of arbitration or in the anticipated jurisdiction of enforcement.
 

Preliminary orders in emergency arbitration

Appendix IV, Article 7 introduces a new Preliminary Order mechanism within the Emergency Arbitrator framework. A party may request a Preliminary Order directing another party not to take action that could frustrate the purpose of the Application for Emergency Measures. The request can be made and decided without notice to the other parties. Once a Preliminary Order is granted, the Emergency Arbitrator must immediately give the other parties a reasonable opportunity to present their case and may modify the Preliminary Order thereafter. This mechanism protects the emergency relief sought from action by another party that could defeat its purpose before the Application is decided.
 

Conclusion

The 2026 Rules represent a targeted development of the ICC arbitration framework, reducing procedural formality in some areas while introducing greater structure in others. The central shift is towards earlier and more proportionate case management. Parties must approach the initial Case Management Conference with the scope of their case and any jurisdictional issues clearly defined, while the broader disclosure obligations require potential conflicts to be identified from the outset. Tribunals, in turn, now have clearer mechanisms for early disposal, accelerated timetables, digital administration and urgent interim protection, allowing procedure to be tailored more closely to the nature and urgency of each dispute. These tools for more efficient and quicker resolution of disputes or at least of targeted issues specifically, should help to increase the popularity of ICC Arbitration as sought out ADR forum.

Note: This Legal Update / Newsletter is intended for general informational purposes only and should not be construed as legal advice. It is based on laws and legal interpretations in effect as of the date of publication. Laws and regulations may change over time, and their application can vary depending on individual circumstances. Readers are strongly encouraged to seek specific legal counsel before acting on any of the information provided herein.