IATA alliance reaches 50 members to expand CORSIA credit supply
IATA’s CORSIA credit alliance reached 50 members as five governments joined. It is targeting 225 million to 250 million eligible units by spring 2027.
IATA on June 23 said its Supporting Alliance for CORSIA EEU Supply had reached 50 participating entities after Guyana, Madagascar, the United Kingdom, Zambia and Zimbabwe joined the Aviation Carbon Market Compact.
The alliance, launched June 6 at IATA’s annual general meeting in Rio de Janeiro, is aimed at expanding the supply of 225 million to 250 million CORSIA Eligible Emission Units by spring 2027. IATA said several other national governments, including Peru, had also expressed interest in joining.
The push lands inside a CORSIA framework that already runs across three compliance periods, the pilot phase from 2021 to 2023, the first phase from 2024 to 2026 and the second phase from 2027 to 2029. ICAO and EASA materials say ICAO Council approval has so far covered 11 emissions unit programs for the pilot phase, eight for the first phase and four for the second phase, while ICAO updated its CORSIA eligible emissions units summary table in October 2025. Verra said in December 2024 that ICAO had approved its VCS Program for the 2024-2026 phase, a reminder that eligibility decisions still govern which credits can enter airline compliance.
For airlines, a larger pool of eligible units can ease short-term pressure when SAF supply remains tight, because CORSIA gives carriers another route to cover residual emissions after efficiency gains and fuel switching. That puts the alliance in the same commercial frame as SAF procurement and book-and-claim systems, where credit quality, documentation and timing determine whether a unit can actually be used when an airline needs it.
The government sign-ons also point to a deeper policy shift. By bringing sovereign states into the Aviation Carbon Market Compact alongside market participants, IATA is trying to improve the governance around issuance, tracking and transfer of credits, not just the headline volume. That matters for aviation buyers that need a predictable compliance pipeline, and for the biofuels sector, where airlines increasingly weigh carbon credits, SAF offtake and broader climate claims inside the same procurement strategy.
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