ISDA and EMTA Publish Revised Definitions for FX Derivatives Market

Background and Implementation

ISDA and EMTA (the trade association for emerging markets) have published the 2026 FX Definitions (the “Definitions”) on the ISDA MyLibrary platform. This new framework is designed to replace the aging 1998 FX and Currency Option Definitions (the “1998 Definitions”), reflecting nearly three decades of market evolution and electronic trading developments. 

• Effective Date: The Definitions will officially take effect on 22 November 2027. Swift is expected to cease support for the 1998 Definitions from and including such date, meaning all in-scope FX transactions confirmed via Swift will automatically incorporate the Definitions.
• Scope: The Definitions will serve as the standard for all cleared and new non-cleared FX derivative transactions.
• Legacy Transactions: Existing non-cleared transactions will generally continue under the 1998 Definitions until they roll over or if contracting parties bilaterally agree to upgrade them.

Core Architecture

The Definitions shift away from a fragmented document structure towards a consolidated, modular framework. The goal is to reduce the need for separate Master Confirmation Agreements (“MCAs”) and manual supplements.

• Main Book: Contains the core definitions, confirmation templates and novation/cancellation provisions.
• Modular Matrices: Key reference data is now organized into matrices (e.g. Settlement Rate Options Matrix, Emerging Markets Currency Matrix) to allow for efficient future updates without republishing the entire rulebook.
• Integration: The framework incorporates previously separate EMTA template terms for non-deliverable transactions and various product supplements (e.g. barriers, binary options, and volatility swaps) directly into the Main Book. In addition, the Main Book contains terms relating to cross-currency transactions and joint calculation agent dispute resolution language – which, in each case, have historically been contained in MCAs for emerging market FX transactions.

Key Substantive Changes

The Definitions introduces several significant changes to market mechanics and risk management:

• Automated Disruption Events: For the first time, deliverable FX transactions will have three automatically applicable disruption events: General settlement/conversion disruption, Material change in circumstance (force majeure), and Settlement system disruption (e.g. CLS issues).
• Offshore CNY (CNH): Specific provisions for offshore CNY are now integrated, reflecting its unique characteristics compared to onshore CNY.
• Calculation Agent Standards: The standard of conduct has been aligned with the 2021 ISDA Interest Rate Derivatives Definitions, requiring the Calculation Agent to act in "good faith using commercially reasonable procedures to produce a commercially reasonable result".
• Full Automated Exercise: A new optional mechanism for European-style options allows for exercise based on published rates, removing the need for manual exercise notifications.
• Calendar Adjustments: New optional methods are available to address economic discrepancies caused by unscheduled holiday changes that postpone settlement dates.

Key Operational Differences

• Automation for Deliverables: Under the Definitions, if a settlement system like CLS fails, the "Settlement System Disruption" event triggers automatically. The Calculation Agent then follows specific rules to either postpone or settle outside the system, providing much-needed certainty in a liquidity crisis.
• Price Source Disruption: For non-deliverable FX transactions, the trigger for a price source disruption has been refined to ensure it only activates when a rate is genuinely unavailable to market participants, preventing "technical" defaults.
• Scope of Authority: While the Calculation Agent has broad powers to determine fallbacks and rates, they are explicitly prohibited from determining whether a disruption event has actually occurred.

Comparison of Disruption Fallbacks: 1998 Definitions vs. Definitions

The Definitions introduce a more structured and automated approach to disruptions, particularly for deliverable transactions which previously lacked a standardized framework.