The 30 September deadline itself is a carrier compliance event, not a new customs step for shippers. But the cost signal is real: the EU ETS phase-in is tightening, 2026 emissions move to 100% coverage, and Q4 carrier surcharge benchmarks are being recalculated at higher carbon prices. UK freight buyers should compare all-in ocean rates, not base freight alone, and check how ETS/FuelEU charges are treated in contracts.
What happens on 30 September 2026
The European Commission and EMSA confirm that maritime EU ETS obligations are being phased in. Shipping companies had to cover 40% of verified 2024 emissions in the first surrender cycle; by 30 September 2026 they must surrender allowances covering 70% of verified 2025 CO₂ emissions. The phase-in then reaches 100% for 2026 emissions, surrendered in 2027.
For covered cargo and passenger ships of 5,000 GT and above, the system applies to 100% of emissions on voyages between EU/EEA ports and 50% of emissions on voyages between an EU/EEA port and a non-EU port. That makes UK–EU ocean legs directly relevant even though the UK is outside the EU.
Why UK shippers should care even though carriers hold the compliance obligation
The legal obligation to monitor emissions and surrender allowances sits with the shipping company. But commercial contracts commonly translate regulatory costs into emissions-related surcharges or all-in rates. That means the practical shipper question is not whether they personally buy EU allowances, but how the carrier passes through EU ETS and FuelEU Maritime costs.
This matters particularly for UK importers and exporters using North Europe hubs, feeder networks and deep-sea services with EU/EEA calls. The regulatory scope and carrier pricing logic can make the carbon component visible even when the cargo's origin or final destination is in the UK.
Q4 2026 surcharge benchmarks are resetting higher
Maersk's published Q4 2026 Emissions Surcharge schedule, effective 1 October, uses an average EUA reference price of €78.97 for the period from 16 May to 15 August 2026. Its Q3 schedule used €71.07. That is an increase of about 11.1% in the carbon-price reference used for the quarterly calculation.
The published tariff examples also move higher on several trades. For a 40-foot dry container, Maersk's Far East Asia to North Europe emissions surcharge rises from €133 in Q3 to €148 in Q4, while North Europe to Far East Asia moves from €88 to €99. Intra North Europe rises from €25 to €27. These are carrier tariff examples rather than a universal industry price, and actual applicability depends on route, contract and booking conditions.
The next step in 2027 is bigger
The current 30 September deadline covers 70% of 2025 CO₂ emissions. The next surrender cycle will be materially broader: 2026 emissions are subject to 100% coverage, and methane and nitrous oxide enter the ETS accounting scope from 2026 alongside CO₂.
For freight buyers, that strengthens the case for treating emissions charges as a normal procurement variable rather than an exceptional surcharge. Rate comparisons should specify whether EU ETS, FuelEU Maritime and other environmental charges are included, separately itemised or subject to quarterly adjustment.
What freight teams should do now
Review Q4 quotations against Q3 on an all-in basis, especially on North Europe and Asia–Europe trades. Separate base freight changes from emissions-related adjustments so procurement teams can see what is market-driven and what is regulatory cost recovery.
For longer-term contracts, check the clause that governs ETS/FuelEU pass-through and the carbon-price index or reset mechanism. For spot freight, verify whether the quoted amount already includes the emissions surcharge. Where multiple routing options exist, compare total landed logistics cost and schedule reliability rather than assuming the lowest base ocean rate is the cheapest final option.