Brussels, Belgium — The International Civil Aviation Organization has joined an alliance working to expand the supply of carbon credits eligible for CORSIA, the Carbon Offsetting and Reduction Scheme for International Aviation.
The International Air Transport Association announced the move on 13 October. The alliance includes more than 80 stakeholders and helps governments authorize eligible emissions units while avoiding double counting.
Authorization is only part of the picture
IATA says 42 compatible authorization letters covered 72 million units as of August, up from 40 million at the start of 2026. It estimates that the initial compliance cycle will require 200–250 million units, ahead of a 2027 deadline.
Those figures describe authorization coverage and estimated demand. They do not establish that 72 million credits have been delivered to, or retired by, airlines.
Why airlines should watch
The announcement concerns the processes needed to make credits usable. For airline compliance teams, the distinction matters: expanding authorization coverage is progress, while sufficient eligible supply remains the task.