A New Era for ICC Arbitration? Reforms in the ICC Arbitration Rules 2026- John Abbott FCIArb comments

ArbDB Chambers Member, John Abbott, has put this briefing note together on the Reforms in the ICC Arbitration Rules 2026.

On 1 June 2026, the ICC unveiled its most substantial revision of the Arbitration Rules since 2021, marking a decisive shift toward faster, clearer, and more modern arbitral practice. As ArbDB Chambers’ John Abbott notes, the reforms aim to streamline procedure, accelerate timelines, and reinforce the ICC’s position as a leading global arbitral institution. For arbitrations seated in England & Wales, the Rules operate in tandem with the Arbitration Act 1996, maintaining the statutory foundation of fairness, efficiency, and limited court intervention.

The 2026 overhaul centres on five themes: speed, procedural clarity, early filtering of weak claims, stronger interim relief, and greater transparency in arbitrator appointments.

1. Abolition of the Terms of Reference: A Structural Shift

One of the most striking reforms is the removal of the Terms of Reference (TOR). TORs were considered to be a defining feature of ICC arbitration. The Case Management Conference (CMC) is now the procedural anchor of the arbitration. Tribunals must hold the CMC within 30 days of receiving the file, and it becomes the cut-off point for adding new claims or defences.

This change aligns ICC practice with other institutions and reduces early-stage cost and delay. While tribunals may still choose to prepare a TOR voluntarily, parties should now treat the CMC as a hard deadline for crystallising claims, jurisdictional objections, and evidential strategy.

2. Early Determination: A New Summary Disposal Tool

Article 30 introduces a mechanism allowing tribunals to dismiss claims or defences that are manifestly without merit or manifestly outside jurisdiction. This largely mirrors summary dismissal provisions in SIAC and HKIAC rules and complements the tribunal’s duty under s.33 Arbitration Act 1996 to avoid unnecessary delay.

Contrast s.39A of the Arbitration Act, where the threshold— “no real prospect of success”—is arguably higher than that of Art. 30. Early Determination is expected to be used for time-barred claims, clearly non-contractual claims, or abusive pleadings, though tribunals may penalise tactical misuse through costs under s.61.

3. Expedited and Highly Expedited Procedures

The ICC has expanded its fast-track options as follows:

• Expedited Procedure: automatic threshold increased from US$3m to US$4m, but it is possible to opt out.

• Highly Expedited Procedure: a new opt-in mechanism targeting a final award within three months of the CMC, typically with a sole arbitrator and limited submissions.

• 
  

When drafting an arbitration agreement, consideration should be given to whether the expedited pathways suit the potential disputes which may arise under a commercial agreement.

4. Strengthened Emergency Arbitration Powers

Emergency Arbitration (EA) is significantly reinforcement. Emergency Arbitrators may now issue Preliminary Orders, including ex parte orders, before the main arbitration begins. The Emergency Arbitrator’s Decision must still be delivered within 15 days of appointment.

EA relief complements the court’s powers under s.44 Arbitration Act 1996, though EA orders remain contractual in nature. For coercive enforcement or third-party effects, parties may still have to turn to the High Court.

5. Enhanced Arbitrator Disclosures and Conflict Management

Article 12 expands disclosure obligations and requires parties to provide comprehensive lists of persons and entities relevant to conflict checks. This aligns with ss.23A, 24 and 33 of the Arbitration Act 1996. However, disclosure does not equate to lack of independence, but early and thorough disclosure will enhance conflict management and should reduce the risk of late challenges.

6. Case Management, Evidence, and Hearings

Tribunals retain broad discretion over evidence, including virtual hearings—now firmly embedded in English case law. Under s.34 Arbitration Act 1996, tribunals may decide whether to hold oral hearings, how evidence is presented, and whether to adopt IBA or other rules on evidence.

As always, Tribunals and parties should ensure procedural decisions do not risk challenges.

7. Interim Measures: Reinforced and Integrated

Article 29 and Appendix V reaffirm tribunals’ powers to order interim measures, which is now strengthened by the Emergency Arbitration reforms. Tribunal-ordered measures may require court assistance under s.42 Arbitration Act 1996, and urgent asset preservation may justify parallel applications under s.42.

8. Award Scrutiny and Costs

The ICC Court will continue to scrutinise draft awards, thus reducing the risk of s.68 challenges—for example failures to address all issues that were put to the Tribunal.

Costs remain structured, with tribunals generally applying the “costs follow the event” principle unless party agreement or fairness dictates otherwise.

Conclusion

The 2026 ICC Rules represent a decisive modernisation of ICC arbitration. By removing the TOR, introducing Early Determination, expanding expedited pathways, and strengthening emergency and interim relief, the ICC has created a more agile and efficient framework. For practitioners and parties—particularly those operating under the Arbitration Act 1996—the reforms offer both opportunities and new strategic considerations for parties and their representatives.

A comparison Table showing the old ICC Arbitration Rules against the 2026 Rules is annexed.

John Abbott FCIArb SFBiam

Arbitrator and Mediator

ArbDB Chambers

July 2026

Comparison Table: ICC Arbitration Rules 2021 against the ICC Arbitration Rules 2026

For enquiries as to John’s availability for appointments as arbitrator or mediator, please contact the Clerk to ArbDB Chambers, Martin Poulter, on either tel +44 (0)203 514 9020 or email martin.poulter@arbdb.com