Introduction to the 2021 ISDA Interest Rate Derivatives Definitions

The 2021 ISDA Interest Rate Derivatives Definitions will replace the 2006 ISDA Definitions as the standard definitional book for cleared and non-cleared interest rate derivatives. ISDA finalized the new definitions on May 18, 2021, ahead of publication on a new web-based user platform (expected on June 4, 2021). An implementation date has been set for the weekend of October 2/3, 2021.

Since the 2006 ISDA Definitions were published 15 years ago, there have been numerous changes in market structure, regulations, technology and market practice. Important lessons have also been learned from various unscheduled market closures. While ISDA has published over 70 supplements to keep the 2006 ISDA Definitions current, this has led to the definitional booklet becoming unwieldy and difficult to use. The 2021 Definitions will consolidate these supplements into the main book, as well as making other necessary updates.

ISDA has published a new factsheet outlining the key changes.

Click on the PDF below to read the factsheet.

Documents (1) for Introduction to the 2021 ISDA Interest Rate Derivatives Definitions

ISDA Response on Common Carbon Data Model

On August 12, ISDA responded to a consultation from the Climate Data Steering Committee (CDSC) on a Common Carbon Credit Data Model. ISDA members believe the Group-of-20 carbon data model initiative is a positive step in addressing data gaps and...

Joint Response on RBA Consultation

On August 11, ISDA and FIA submitted a joint response to the Reserve Bank of Australia (RBA) on its consultation on guidance for Australia’s clearing and settlement facility resolution regime. The associations welcome publication of the draft guidance, which provides...

SwapsInfo H1 2025 and Q2 2025

Interest rate derivatives (IRD) trading activity increased in the first half of 2025, driven by continued interest rate volatility, evolving central bank policy expectations and persistent macroeconomic uncertainty. Trading in index credit derivatives also rose, as market participants responded to...

ISDA Response to IFSCA Consultation

On August 5, ISDA responded to the International Financial Services Centres Authority’s (IFSCA) consultation on reporting and clearing of over-the-counter (OTC) derivatives contracts booked in International Financial Services Centres (IFSC). In the response, ISDA provided the following recommendations: Not mandating...