
The US and China have introduced reciprocal port fees targeting vessels linked to each other’s countries, marking a novel use of port fees as geopolitical tools akin to tariffs. The fees are based on vessel ownership, operation, flag, and place of build, but the regulations contain ambiguities, especially around definitions of owner and operator. Our authors compare and comment on the provisions.
Published 21 October 2025
Editor’s update (10 November 2025): The United States White House confirmed on 1 November that the implementation of USTR port fees on ships linked to China will be suspended for one year. The suspension is said to take effect from 10 November 2025. On 10 November, China’s Ministry of Transport confirmed that they, too, will suspend the special port fees on US-linked vessels for a period of one year.
In the last few months, we have seen the advent of a new chapter in the US-China trade war and perhaps the start of a new trend. Following an announcement by the US Trade Representative in April 2025 of various additional port charges that would be imposed on vessels with links to China, the Chinese followed suit in October 2025 by announcing tit-for-tat port charges on vessels with links to the US. Both states introduced the promised fees on 14 October 2025. The fees in each state are levied on incoming vessels on the basis of where the vessel was built and the country with which it is associated. While tariffs on imports based on the country of origin are familiar, employing port fees as a geopolitical tool based on a vessel’s associations with a particular country is new and unprecedented.
The novelty of this type of charge is exacerbated by the fact that there are many ambiguities concerning how these fees will be applied. The general shape of the intended US measures and Chinese countermeasures have been known for some time, but as always, the devil is in the detail. In relation to the USTR measures, industry parties have been seeking clarifications as to how the linkage to China will be assessed, particularly in relation to how “ownership” and “vessel operator” are determined. The USTR issued a memorandum on 10 October 2025 that clarified some points and signposted some modifications, but it is not the widely-awaited FAQ they had promised to release, and it does not address these important issues. In relation to the Chinese measures, the Ministry of Transport published the official Implementation Measures Notice on 14 October 2025 (Chinese announcement and English translation courtesy of BIMCO) but the definition of “vessel operator” remains unclear. Given that the Chinese regulations were really a response to the US regulations, it is reasonable to surmise that if the US gives these terms a broad interpretation, China will do the same.
The Chinese port fees are clearly in reaction to the USTR port fees. They were brought into effect following revisions to the Chinese International Maritime Transport Regulations which allows China to respond where “a country or region adopts, assists or supports discriminatory restrictions against operators, ships or crew members of China”. China has also based much of the wording of its Special Port Fees on the USTR s.301 Notice of Action for the special port fees and its subsequent modifications. The Chinese regulations largely mirror the US regulations, even down to the lack of clarity as to how “ownership” and “vessel operator” are defined.
In this context, we think it useful to compare the US and Chinese measures to highlight their similarities and their differences. We have added commentary from Gard that is based on our own analysis or information we have collated from our industry sources, which does not come from an “official” announcement by the US or China.
| USTR s.301 port fees on Chinese owners and operators | Chinese special port fees on US owners, operators or flag |
|---|---|
Chinese special port fees on US owners, operators or flag | 400 RMB per net ton rising to 1,120 RMB per net ton in April 2028 (as of 15/10/2025, approximately US$56 per net ton rising to US$156.9 per net ton). |
| USTR s.301 port fees on Chinese built ships | Chinese special port fees on US built ships |
|---|---|
US$18 per net ton rising to US$33 per net ton in April 2028. | 400 RMB per net ton rising to 1,120 RMB per net ton in April 2028 (as of 15/10/2025, approximately US$56 per net ton rising to $156.9 per net ton). |
| USTR s.301 port fees | Chinese special port fees |
|---|---|
The charge will only be levied up to 5 times per year. A string of voyages within the US are treated as one port call. | The fee is charged on a per voyage basis, and a vessel will not be charged again at subsequent ports of call on the same voyage. |
| USTR s.301 port fees | Chinese special port fees |
|---|---|
| For Chinese owned/operated vessels | For US owned / operated / flagged vessels |
| For Chinese built vessels | For US built vessels |
| USTR s.301 port fees | Chinese special port fees |
|---|---|
Vessel owner of China is very widely defined to include vessels owned or controlled by a citizen or citizens or residents of the PRC, Hong Kong or Macau or companies established there or with their principal place of business there. Controlled means where 25% or more of the entity's voting interest, board seats or equity is held directly or indirectly by the governments of the PRC, Hong Kong or Macau or by a citizen or citizens or residents of the PRC, Hong Kong or Macau or companies established there or with their principal place of business there. | The fee (which is the same whether the vessel is US built or US owned or operated) will be imposed on: |
*Guidance and instructions from the China Shipowners Association here
| USTR s.301 port fees | Chinese special port fees |
|---|---|
| Comment: | Comment: |
| USTR s.301 port fees | Chinese special port fees |
|---|---|
Although the original rules from April 2025 provide for the fees to be paid by the owner in relation to Chinese built ships, recent implementing regulations announced on 10 October 2025 put the burden on the “vessel operator” to determine if a fee is owed, self-report to the US authorities and to pay the fee in advance, irrespective of the basis on which the vessel is deemed to be US-linked. The operator is encouraged to initiate payment at least 3 business days in advance of the vessel’s arrival in the US. | Vessel owners or agents must submit a reporting form for all vessels calling at Chinese ports at least 7 days before arriving (or upon departure from the previous port if the transit time is shorter than 7 days). |
*Pay.gov - Section 301 Chinese Vessel Fees
**Federal Register :: Restoring America's Maritime Dominance
Without a clause dealing with these specific port fees in the charterparty, there will be uncertainty as to which party has the ultimate liability for them. Owners will no doubt argue that the fees are being incurred because the vessel is being ordered to that port, while charterers will argue that the port fees are a result of the characteristics of the vessel or of the owners or perhaps another company further up the chain. Port charges are often the responsibility of time charterers (e.g. under NYPE 1993) or owners under voyage charters (e.g. all dues, charges and taxes customarily levied on the Vessel under GENCON 1994). However, it is not clear whether the new differential port fees charged by the US and China would fall within the type of port charges or customary fees normally covered by these clauses.
Intertanko (see here) and BIMCO (see here) have both drafted Owner friendly clauses in relation to the US port fees which can be used to allocate liability. There are also a number of other bespoke clauses in the market. It is likely that clauses are in the pipeline from BIMCO and Intertanko to cover the Chinese special port fees.
In a statement on 14 October 2025, China’s Ministry of Commerce said, “If the US chooses confrontation, China will see it through to the end; if it chooses dialogue, China’s door remains open.” Judging by events in US-China trade relations since the beginning of 2025, it certainly seems that the world’s two leading economic giants are capable of dialogue, but whether they are capable of reaching an accord remains to be seen. What is certain is that a new precedent has now been set in using port fees in a manner analogous to tariffs.
Gard is closely monitoring developments in this space through the collaborative efforts and knowledge sharing of our Defence lawyers and claims handlers throughout our global offices, with the support of our extensive network of local correspondents in the US and China. Our members and clients are encouraged to contact us at any time with enquiries, and we would more than happy to assist as best as we can.