Since January 2024 the EU Emissions Trading System has covered emissions from ships of 5,000 GT and above calling at EU ports. In 2026 shipping companies surrendered allowances for 70% of their 2025 emissions by 30 September. From 2026 the system also counts methane and nitrous oxide, and the 2026 emissions are the first to be surrendered in full, by 30 September 2027.
Share of reported emissions that must be covered by allowances, as published by the European Commission.
| Emissions of | Share to surrender | Surrender by |
|---|---|---|
| 2024 | 40% | 30 September 2025 |
| 2025 | 70% | 30 September 2026 |
| 2026 | 100% (CO2, plus CH4 and N2O from 2026) | 30 September 2027 |
| 2027 onwards | 100% | 30 September of the following year |
The verified emissions report for a year is due by 31 March of the next year (28 February if the administering authority asks). Sources: European Commission, “Reducing emissions from the shipping sector” and “FAQ – Maritime transport in EU Emissions Trading System”, both read on 13 November 2026.
Sources: European Commission, shipping sector page and maritime ETS FAQ.
Sources: maritime ETS FAQ (penalties, ice class, islands) and the shipping sector page (17 July 2026 proposal). See also FuelEU Maritime in 2026, the EU rule on the fuel itself.
70% of the emissions reported for 2025. The phase-in is 40% of 2024 emissions (surrendered in 2025), 70% of 2025 emissions (surrendered in 2026) and 100% of reported emissions from 2027 onwards.
Allowances are surrendered by 30 September each year for the emissions of the previous year. The verified emissions report is due by 31 March, or by 28 February if the administering authority asks for it.
Ships of 5,000 gross tonnage and above, whatever flag they fly. Offshore ships of 5,000 GT and above come in from 2027. General cargo and offshore ships between 400 and 5,000 GT have been in the EU MRV (monitoring and reporting) since 1 January 2025; whether they join the ETS is part of the ETS review.
100% of emissions on voyages between two EU ports and while ships are within EU ports, and 50% of emissions on voyages that start or end outside the EU.
From 2026 the ETS covers methane (CH4) and nitrous oxide (N2O) as well as CO2, and the emissions of 2026 are the first to be surrendered in full (100%, by 30 September 2027).
The shipping company: the shipowner or another entity, such as the manager or bareboat charterer, that has taken over responsibility for operating the ship under the ISM Code. If no such decision is made, the registered owner is responsible by default.
It pays an excess emissions penalty of EUR 100 per tonne of CO2 equivalent, corrected for inflation, and still has to surrender the missing allowances. The names of penalised companies are published. After two or more consecutive periods of non-compliance, an expulsion order can follow and EU ports refuse the company's ships; EU-flagged ships may be detained.
Mariners Digest is made by CryoSim. It is not affiliated with or endorsed by the European Commission. This page summarises the Commission’s published pages in CryoSim’s own words and is not legal advice; the EU legal texts always take precedence. Published 2026-11-13, updated 2026-11-13. See also IMO MEPC 85: what to watch, how to use Mariners Digest and Mariners Digest.