ICC Arbitration Rules 2026: A new era of faster and efficient arbitration

The ICC Arbitration Rules, 2026 entered into force on June 1, 2026. The 2026 Rules reflect how ICC arbitration continues to adapt to changing times and party requirements, advancing procedural proportionality and giving parties a broader range of procedural pathways calibrated to the value, complexity and urgency of their disputes.

For Indian businesses, which continue to rank among the most frequent users of ICC arbitration globally, these developments are particularly significant. They provide parties with a wider range of procedural tools and create new pathways for obtaining high-quality, scrutinised awards within significantly shorter timeframes.

A significant change is the abolition of mandatory Terms of Reference (ToR), although arbitral tribunals still retain the discretion to establish them, where appropriate, as a useful case management tool.

The ToR is a jointly-signed document establishing the parties’ claims, issues in dispute and procedural framework. While it continued to be helpful in practice, the process often required extensions up to a further 30 days, to allow for meaningful consultation between the tribunal and the parties. If a party refused to take part in drawing up the ToR or signing it, the ToR would be submitted to the ICC Court for approval. In some cases, this meant that the ToR process could become contentious or operate as a source of delay.

The 2026 Rules provide for greater emphasis on the initial case management conference (CMC), required within 30 days of file transmission to the tribunal. The CMC also serves the ToR's previous function as the cut-off point for introducing new claims without the tribunal's permission.

The Rules also introduce a formal early determination mechanism, enabling tribunals to dispose of claims or defences that are manifestly without merit or manifestly outside the tribunal's jurisdiction. Although tribunals have increasingly exercised similar powers in recent years, the express codification of this mechanism provides greater procedural certainty and equips tribunals with an additional tool to enhance efficiency.

The most consequential amendment for many users lies in the revised expedited arbitration framework. When the ICC introduced the expedited procedure provisions (EPP) in 2017, they represented a significant innovation. The objective was to provide parties with a faster and more cost-effective mechanism for resolving lower-value disputes while maintaining the quality and enforceability associated with ICC arbitration.

At the time, questions naturally arose. Would parties embrace a streamlined process? Could tribunals resolve disputes within compressed timelines without compromising due process? Would awards withstand judicial scrutiny? 8 years later, the answers are clear.

In January 2026, the ICC Commission on Arbitration and ADR published Expedited Procedure Provisions: Eight Years On, analysing expedited arbitrations administered by ICC since the introduction of the EPP. The Report examined 865 expedited cases across 36 jurisdictions and provides one of the most comprehensive empirical studies of expedited arbitration currently available.

By the end of 2024, 461 final awards had been rendered under the expedited framework. Of these, 63% were issued on or around the 6-month deadline prescribed under the Rules. The average period required for ICC Court scrutiny of those awards was only 15 days.

Most importantly, the Report found no successful challenge to an expedited award on due process grounds during the period reviewed.

The data demonstrated that parties and tribunals have successfully adapted to streamlined procedures. Nearly 79% of concluded expedited cases proceeded without document production. Expert evidence was used in only 26 of the 461 cases analysed. Hearings, where held, were typically completed within 1-4 days.

Far from resisting the process, users increasingly embraced it. 16% of expedited cases were voluntary opt-ins, meaning that parties elected to use the expedited framework even where it did not apply automatically. By contrast, only 31 cases involved parties opting out of expedited arbitration where it would otherwise have applied.

Collectively, these findings tell an important story. Expedited arbitration has not merely survived; it has proven itself capable of delivering efficient, enforceable outcomes while preserving procedural fairness.

Against that backdrop, the increase in the threshold for automatic application of the EPP from $3 million to $4 million should not be viewed as a dramatic policy shift, but rather as a measured evolution backed by empirical data. The Report reveals that approximately 40% of ICC arbitrations involve claims valued at less than $4 million. The revised threshold, therefore, aligns the expedited regime with a significant proportion of the ICC's caseload and extends the benefits of a proven procedure to a broader category of disputes.

Users have shown confidence in the process, tribunals have demonstrated an ability to work within compressed timelines and the quality assurance mechanisms of the ICC Court have remained fully effective. The increased threshold reflects institutional confidence in a procedure that has already proven its value in practice.

For Indian parties, the implications are significant. A larger proportion of commercial disputes will now fall within the expedited regime by default, enabling parties to benefit from streamlined procedures, reduced costs and the prospect of obtaining a final award within 6 months.

An innovation of the 2026 Rules is the highly expedited arbitration provisions (HEAP) set out in Appendix VI of the 2026 Rules. Unlike EPP, which apply by default below the monetary threshold, HEAP is purely opt-in, requiring the agreement of all parties either at the clause-drafting stage or after the dispute arises and not dependent on the amount in dispute.

The procedure is designed to deliver a final award within 3 months of the initial CMC. To achieve this objective, proceedings are substantially front-loaded and condensed:

• The Statement of Claim accompanies the Request for Arbitration;

• The Statement of Defence accompanies the Answer;

• The parties have 20 days to nominate a sole arbitrator; failing which the ICC Court will appoint an arbitrator;

• The initial CMC must be held within seven days of transmission of the file to the sole arbitrator;

• The tribunal enjoys broad discretion to limit submissions, restrict document production, dispense with hearings and determine disputes based on written materials alone; and

• Parties may even agree to an award without reasons.

HEAP builds directly on the success of the EPP framework. The Report explicitly found that EPP had already been used to resolve genuinely complex disputes within the 6-month framework. HEAP takes that validated model and compresses it further. It can be used for any category of disputes, but is expected to be particularly attractive for appropriately lower-complexity commercial matters with discrete legal issues, few disputed facts, or a defined aspect of a larger dispute that parties wish to quarantine and resolve swiftly. Especially for document-driven disputes such as payment claims, licensing disagreements and purchase price determinations, a final and binding ICC award within 3 months may be transformative.

At a broader level, these amendments advance an increasingly important principle in international arbitration that not every dispute requires the same level of procedural intensity. The procedure should be proportionate to the dispute.

Taken together, the 2026 Rules reflect a coherent institutional direction. The abolition of ToR removes a front-end bottleneck. The empowered CMC replaces it with a dynamic mechanism. Early determination gives tribunals a tool to prune proceedings at the outset. And the combination of a higher EPP threshold and the new HEAP track means ICC now offers a genuine tiered system offering standard, expedited and highly expedited procedures, each calibrated to the needs of the dispute.

For Indian parties negotiating arbitration clauses today, these changes warrant careful consideration. The question is no longer simply whether to arbitrate, but also which procedural pathway best suits the dispute. The 2026 Rules offer more options than ever before and, importantly, those options are grounded in experience rather than experimentation. Parties considering ICC dispute resolution clauses may also seek guidance from the ICC Secretariat where helpful.

Tejus Chauhan is the Director, Arbitration and ADR, South Asia; and Khushboo Deshmukh is the Deputy Director, Arbitration and ADR, India at ICC Dispute Resolution Services.