CORSIA
Understand CORSIA baseline, monitoring and offsetting expectations with practical operator guidance and a clear subpage structure.
Latest regulatory updates
What changed recently
ICAO
ICAO Launches 2026 Technical Advisory Body (TAB) Assessment Cycle for CORSIA Phase 2
ICAO has launched the 2026 Technical Advisory Body (TAB) assessment cycle to evaluate emissions unit programmes seeking approval to supply CORSIA Eligible Emissions Units (CEEUs) for the 2027–2029 compliance period. A total of 25 organisations submitted applications for assessment.
What operators should know
Practical guidance for compliance teams
What operators should know
What changed?
CORSIA continues to evolve around monitoring, reporting, verification and the use of eligible fuels and units.
Why is it important?
A clear operating model reduces the chance of data gaps or non-compliant offsetting choices.
Who is affected?
Operators covering international aviation routes and those managing fleet-wide sustainability reporting.
When does it apply?
This matters across annual CORSIA compliance cycles and internal planning workstreams.
What action should operators take?
Review baseline assumptions, maintain evidence trails and align your fuel and unit strategy with policy expectations.
Risks of non-compliance
Weak governance can result in reporting disputes, missed milestone dates and avoidable offsetting costs.
Emissence insight
Emissence insight
CORSIA is most manageable when operators separate technical compliance from commercial decision-making and treat both as a connected process.
Common mistakes operators make
- Separate fuel evidence from offset strategy to avoid confusion.
- Document every decision that affects baseline or unit selection.
- Keep a current register of eligible fuels and units.
Recommended actions
- Create a dedicated CORSIA operating rhythm for each reporting cycle.
- Review eligibility rules before procurement or contracting decisions.
- Use a central register to track evidence and change requests.
Need help understanding how this regulation affects your airline?
Our specialists help aircraft operators achieve compliance with EU ETS, UK ETS, CORSIA, ReFuelEU Aviation and other sustainability regulations.