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
Latest
ISDA Publishes ISDA SIMM® Methodology, Version 2.9+2606
Following the 2026 primary calibration exercise, ISDA is pleased to publish ISDA SIMM® version 2.9+2606. This version incorporates updates arising from the recalibration of the model using historical data up to and including 30 June 2026. The ISDA SIMM methodology...
Moving Regulatory Reporting up a Gear with AI
The aim of derivatives regulatory reporting is to improve transparency so regulators can monitor market activity and identify emerging risks. Although reporting rules and subsequent updates have resulted in improvements, they haven’t achieved fully consistent outcomes, leading to implementation and...
Sydney DTF: Scott O'Malia Opening Remarks
ISDA/AFMA Sydney Derivatives Trading Forum October 26, 2026 Opening Remarks Scott O’Malia ISDA Chief Executive Good morning, and welcome to the ISDA and AFMA Derivatives Trading Forum. Thanks for joining us today, and a big thank you to our...
ISDA Publishes FpML Version 5.14
ISDA has published a new version of its Financial products Markup Language (FpML), a widely used open-source standard for the electronic dealing and processing of derivatives transactions. The latest iteration – version 5.14 – incorporates several key modifications and updates...