Maritime Sustainability

Maritime Compliance Calendar 2026

Key deadlines for EU ETS, FuelEU, CII, and IMO regulations — all in one place.

EU ETS FuelEU CII 2026
Q1

January - March

Q1
January - March 2026
1
JAN
EU ETS 70% Compliance Phase
70% of verified 2025 CO₂ emissions subject to EU ETS (40% in 2024, 70% in 2025, 100% in 2026).
EU ETS
1
JAN
FuelEU Maritime Compliance Year
2% GHG intensity reduction target remains in effect for 2026 (increases to 6% by 2030).
FuelEU
31
JAN
FuelEU Annual Report Submission
Submit FuelEU compliance report for 2025 to verifier.
FuelEU
31
MAR
EU ETS Emissions Report Due
Submit verified CO₂ emissions report for 2025 to competent authority.
EU ETS
31
MAR
FuelEU Verification Completed
FuelEU compliance report must be verified by accredited verifier.
FuelEU
31
MAR
CII Data Submission Deadline
Submit 2025 fuel oil consumption data to flag State or recognized organization.
CII
Q2

April - June

Q2
April - June 2026
30
APR
FuelEU Compliance Balance Approval
Competent authority approves compliance balance. Final date before penalty period.
FuelEU
31
MAY
CII Verification & Statement of Compliance
CII rating verified and Statement of Compliance issued with rating noted.
CII
30
JUN
FuelEU Penalty Payment Deadline
Final date to pay penalties for non-compliance (1 May - 30 June payment period).
FuelEU
30
JUN
CII Data Submission to IMO
Flag States submit attained CII data to IMO GISIS database.
CII
Q3

July - September

Q3
July - September 2026
30
SEP
EU ETS Allowance Surrender Deadline
Surrender EU Allowances to cover 70% of 2025 emissions. CRITICAL regulatory deadline.
EU ETS
Q4

October - December

Q4
October - December 2026
1
DEC
2027 Compliance Planning
Begin planning for 2027: EU ETS moves to 100% coverage, budget allocation, system upgrades.
EU ETS FuelEU CII
31
DEC
Year-End Data Collection
Gather 2026 data, prepare documentation, ensure monitoring records are complete for 2027 reporting.
EU ETS FuelEU CII

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