Which States are participating in CORSIA?
ICAO has decided to use a phased implementation for the CORSIA to accommodate the special circumstances and respective capabilities of States (SCRC), in particular developing States, while minimizing market distortion.
Pilot phase applies from 2021 through 2023 to States that have volunteered to participate in the scheme.
List of States that intend to volunteer in CORSIA from its outset as of Jan 2021:
First phase applies from 2024 through 2026 to States that voluntarily participate in the pilot phase, as well as any other States that volunteer to participate in this phase.
Second phase applies from 2027 through 2035 to all States that have an individual share of international aviation activities in RTKs in year 2018 above 0.5 per cent of total RTKs or whose cumulative share in the list of States from the highest to the lowest amount of RTKs reaches 90 per cent of total RTKs, except Least Developed Countries (LDCs), Small Island Developing States (SIDS) and Landlocked Developing Countries (LLDCs) unless they volunteer to participate in this phase.
List of States that will have to mandatorily participate in CORSIA in Second Phase not taking into account whether these States participated voluntarily in previous phases(based on last available international aviation activities in RTKs in year 2018):
List of all States to participate in the Second Phase (voluntarily or not):
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Pilot phase applies from 2021 through 2023 to States that have volunteered to participate in the scheme.
List of States that intend to volunteer in CORSIA from its outset as of Jan 2021:
| Afghanistan | Estonia | Madagascar | Serbia |
| Albania | Finland | Malaysia | Singapore |
| Armenia | France | Malta | Slovakia |
| Australia | Gabon | Marshall Islands | Slovenia |
| Austria | Georgia | Mexico | Spain |
| Azerbaijan | Germany | Monaco | Sweden |
| Belgium | Ghana | Montenegro | Switzerland |
| Benin | Greece | Namibia | Thailand |
| Bosnia and Herzegovina | Guatemala | Netherlands | Turkey |
| Botswana | Guyana | New Zealand | Uganda |
| Bulgaria | Honduras | Nigeria | Ukraine |
| Burkina Faso | Hungary | North Macedonia | United Arab Emirates |
| Cameroon | Iceland | Norway | United Kingdom |
| Canada | Indonesia | Papua New Guinea | United Republic of Tanzania |
| Costa Rica | Ireland | Philippines | United States |
| Côte d'Ivoire | Israel | Poland | Zambia |
| Croatia | Italy | Portugal | |
| Cyprus | Jamaica | Qatar | |
| Czechia | Japan | Republic of Korea | |
| Democratic Republic of the Congo | Kazakhstan | Republic of Moldova | |
| Denmark | Kenya | Romania | |
| Dominican Republic | Latvia | Rwanda | |
| El Salvador | Lithuania | San Marino | |
| Equatorial Guinea | Luxembourg | Saudi Arabia |
First phase applies from 2024 through 2026 to States that voluntarily participate in the pilot phase, as well as any other States that volunteer to participate in this phase.
Second phase applies from 2027 through 2035 to all States that have an individual share of international aviation activities in RTKs in year 2018 above 0.5 per cent of total RTKs or whose cumulative share in the list of States from the highest to the lowest amount of RTKs reaches 90 per cent of total RTKs, except Least Developed Countries (LDCs), Small Island Developing States (SIDS) and Landlocked Developing Countries (LLDCs) unless they volunteer to participate in this phase.
List of States that will have to mandatorily participate in CORSIA in Second Phase not taking into account whether these States participated voluntarily in previous phases(based on last available international aviation activities in RTKs in year 2018):
| Australia | Ireland | Republic of Korea |
| Belgium | Italy | Russian Federation |
| Brazil | Japan | Saudi Arabia |
| Canada | Luxembourg | Singapore |
| China | Malaysia | Spain |
| Ethiopia | Mexico | Switzerland |
| Finland | Netherlands | Thailand |
| France | New Zealand | Turkey |
| Germany | Norway | United Arab Emirates |
| Hungary | Philippines | United Kingdom |
| India | Portugal | United States |
| Indonesia | Qatar | Viet Nam |
List of all States to participate in the Second Phase (voluntarily or not):
| Afghanistan | El Salvador | Kenya | Romania |
| Albania | Equatorial Guinea | Latvia | Russian Federation |
| Armenia | Estonia | Lithuania | Rwanda |
| Australia | Ethiopia | Luxembourg | San Marino |
| Austria | Finland | Madagascar | Saudi Arabia |
| Azerbaijan | France | Malaysia | Serbia |
| Belgium | Gabon | Malta | Singapore |
| Benin | Georgia | Marshall Islands | Slovakia |
| Bosnia and Herzegovina | Germany | Mexico | Slovenia |
| Botswana | Ghana | Monaco | Spain |
| Brazil | Greece | Montenegro | Sweden |
| Bulgaria | Guatemala | Namibia | Switzerland |
| Burkina Faso | Guyana | Netherlands | Thailand |
| Cameroon | Honduras | New Zealand | Turkey |
| Canada | Hungary | Nigeria | Uganda |
| China | Iceland | North Macedonia | Ukraine |
| Costa Rica | India | Norway | United Arab Emirates |
| Côte d'Ivoire | Indonesia | Papua New Guinea | United Kingdom |
| Croatia | Ireland | Philippines | United Republic of Tanzania |
| Cyprus | Israel | Poland | United States |
| Czechia | Italy | Portugal | Viet Nam |
| Democratic Republic of the Congo | Jamaica | Qatar | Zambia |
| Denmark | Japan | Republic of Korea | |
| Dominican Republic | Kazakhstan | Republic of Moldova |
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