Understanding the Latest CORSIA Update
The International Civil Aviation Organization has released the CORSIA Annual Sector’s Growth Factor (SGF) for 2024, Fourth edition (October 2025), setting the foundation for how nations and operators will calculate carbon offset obligations. The SGF for 2024 stands at 0.15948315, reflecting the difference between 2024’s total aviation emissions and 85 percent of 2019’s baseline CORSIA-Annual-SGF-4ed-2025-web.
This value may seem purely technical, but it represents a global step in aligning post-pandemic aviation recovery with climate responsibility. Each participating State will use this factor to determine how much of its operators’ emissions need to be offset through sustainable measures.
Why This Matters
The new SGF number shows that international aviation has resumed growth, but also that regulatory oversight is keeping pace. The use of 2019 as the reference year continues to anchor progress in pre-pandemic conditions, providing a realistic benchmark for the sector’s carbon evolution.
This year’s calculation, based on data from 126 participating States, captures both the recovery momentum and the shared intent to manage it responsibly. CORSIA-Annual-SGF-4ed-2025-web. It’s a reminder that the pathway to sustainable aviation is not about sudden transformation but about consistent, transparent accountability.
Looking Ahead
As aviation moves through its next growth phase, the SGF serves as a critical feedback signal. It encourages balance, growth with responsibility, expansion with offsetting.
The sector’s journey toward net-zero continues to rely on collaboration, innovation, and reliable data. This update underscores that progress in sustainability is not measured only in numbers, but in the shared commitment to improve them every year.
Download Document File Here: CORSIA-Annual-SGF-4ed-2025-web.pdf Fourth edition (October 2025)