Import Control System 2 (ICS2) is the European Union's advance cargo information system. Before goods reach the EU, someone in the supply chain must lodge an Entry Summary Declaration (ENS) with the customs authorities, who run a safety and security risk assessment on it. As of September 2026 the system covers air, maritime, inland waterway, road and rail. If the data is missing, vague or late, the consignment can be stopped at the border and not cleared. For a shipper the practical point is simple: your forwarder or carrier can only file what you tell them, so the quality of your cargo description is now a compliance issue, not paperwork.
This guide explains what ICS2 is, when each phase went live, who files, what data is needed, what customs can do with it, and what to send your forwarder. Where a detail could not be confirmed on the European Commission pages we opened, we say so.
What ICS2 and the ENS actually are
The Entry Summary Declaration is a pre-arrival filing about goods entering the EU customs territory. It is a safety and security declaration, not a duty or import declaration. It does not replace the customs declaration you make to clear the goods for free circulation; it comes first, and it feeds a risk assessment. ICS2 is the IT system that receives ENS data, shares it between Member States and runs the risk analysis. It replaced the older ICS1 system.
The Commission's own factsheet describes the aim as collecting data about all goods entering the EU prior to their arrival, so that customs can identify high-risk consignments and intervene at the most appropriate point in the supply chain. It also states the consequence of not being ready: consignments and freight can be stopped at the EU customs borders, goods are not cleared, and inadequate declarations are either rejected or subject to intervention, with possible sanctions for non-compliance.
Two things ICS2 is not. It is not a tax or duty filing, and it is not only for air cargo. Many shippers still associate advance security data with air freight, which is where the EU phase began. It now applies across every mode.
The release dates, by transport mode
ICS2 was introduced in three releases. The schedule slipped several times, and older material (including the Commission's 2020 factsheet, which showed maritime, road and rail all arriving in March 2024) carries dates that did not hold. The dates below come from Commission news items.
| Release | Scope | Date |
|---|---|---|
| Release 1 | Pre-loading data for postal and express consignments by air | 15 March 2021 |
| Release 2 | Air cargo, including general cargo and full express and postal filing | 1 March 2023 (twelve Member States received a derogation to connect later, by 30 June 2023) |
| Release 3, maritime | Maritime and inland waterway transport | From 3 June 2024, with carriers deploying from June to December 2024 and traders from December 2024 to April 2025 |
| Release 3, road and rail | Road and rail shipments | From 1 April 2025 |
| ICS1 fully replaced | All modes, all Member States | 1 September 2025, with limited temporary derogations in some Member States and for Northern Ireland |
The Commission's Release 3 page adds the latest position we could verify: as of 1 June 2026, all consignments entering EU territory by any means of transport should have a valid ENS, which marked the end of the temporary derogations for linking ENS with NCTS Phase 6 (the transit system). It also lists an updated stop-words list for goods descriptions taking effect on 3 August 2026, which matters for the section on what goes wrong.
Two caveats. The pages we opened did not itemise which Member States held derogations for road and rail, or the exact end date of any arrangement for Northern Ireland, and third-party summaries disagree on both. Treat national customs and your forwarder as the authority for a specific border crossing, and check the current position rather than relying on a blog post, including this one. The position is date-sensitive, and this assessment is as of September 2026.
Who has to file
The obligation sits with the carrier by default, but ICS2 was designed around the reality that carriers often do not know what is inside the box. The Commission's material lists the directly affected operators as express carriers, postal operators, air cargo carriers, freight forwarding and logistics companies, maritime, rail and road carriers, and, for goods received by sea, the final consignee established in the EU. Representatives of any of these can file on their behalf.
For sea freight, the Commission's release notice says that carriers submit the complete ENS and that traders such as freight forwarders and logistics operators are responsible for house-level data. In practice this is the multiple filing model:
- Carrier filing: the carrier files the master-level data (the ocean bill of lading or air waybill level).
- House-level filing: a forwarder or consolidator that issues its own house bills files the house-level data separately, and links it to the carrier's filing by the reference number of the carrier's declaration.
- Single filing: where there is no house layer, the carrier files everything.
For air, the Commission's Release 2 notice describes a multiple filing regime under which operators provide complete ENS data either to the air carrier for joint filing or directly to ICS2. The point for shippers is not the mechanism. It is that your forwarder, not the airline or shipping line, is often the party who has to file the detailed data about your cargo, and they cannot do it without your input. If you want to understand who in a chain does what, see What Is a Freight Forwarder? Roles, Services and How They Work and Do You Need a Customs Broker?
One operational detail: anyone filing directly in ICS2 needs an EORI number (the EU's economic operator identification), must connect to the system through a Member State customs authority, and has to pass conformance testing first. That is a forwarder's or carrier's burden, not a shipper's, unless you file directly.
The data behind an ENS
The exact data set varies by mode and business model, and the Commission's technical documentation is where filers get the full list. What matters to a shipper is the cargo-facing part. Broadly, the filing needs to identify:
- The parties: consignor and consignee, and where relevant the notify party, with names and addresses. EORI numbers are requested for parties who have one; ask your forwarder which parties need one in your case.
- The goods: a description specific enough for a customs officer to understand what the goods are, and a commodity code. Commonly cited guidance is that the code must be at least six digits at the Harmonized System level. We could not confirm the digit count on the Commission pages we opened, so confirm it with your forwarder or national customs. The number is not the cause of most rejections anyway; the description usually is. For how to find the right code, see HS Codes Explained.
- The consignment: packages, marks and numbers, gross weight, container or transport unit numbers, and the transport document reference.
- The transport: vessel, flight, truck or train identification, the route into the EU and the first place of arrival.
When the ENS is accepted, ICS2 returns a Movement Reference Number (MRN). The MRN is the reference customs, the carrier and the filer use to tie every later step to that declaration, and it is what lets house-level filings link to the carrier's declaration. Ask your forwarder for the MRN, and keep it with your shipment records, alongside the documents in Import Documentation Checklist.
What customs can do with what you file
After the ENS is lodged, ICS2 runs a risk assessment across the participating Member States. The result for a shipper is one of a small number of outcomes. We describe these from the general design of the system and the Commission's stated aims; the Commission pages we opened did not spell out every message name, so treat the labels as shorthand.
| Outcome | What it means | What you may be asked to do |
|---|---|---|
| No action | Risk assessment finds nothing requiring intervention | Nothing. The cargo continues. |
| Request for information | Customs needs more or better data, often a better description or party details | Supply the missing data quickly through your forwarder. A vague description is the usual trigger. |
| Referral for screening or inspection | Customs wants the consignment screened, scanned or physically checked on arrival | Expect delay and possible cost, and be ready with documents and access to the goods. |
| Do not load (air, pre-loading) | For air cargo, a high-risk finding before loading can stop the cargo being loaded on the aircraft | Resolve the issue with customs through the filer before the cargo can travel. See Air Cargo Security in 2026 for the related screening rules. |
The Commission's factsheet frames the whole exercise around being able to intervene at the most appropriate point in the supply chain, which is why air has a pre-loading stage where sea, road and rail rely more on pre-arrival data. The timing rules differ by mode and the pages we opened do not list the exact deadlines, so ask your forwarder for the cut-off they need from you, and treat it as earlier than your cargo cut-off, not equal to it.
What goes wrong in practice
Almost every avoidable ICS2 problem starts with data the shipper supplied late or too loosely.
- Vague goods descriptions. Words such as "consolidated cargo", "general cargo", "spare parts", "personal effects", "said to contain", "FAK" (freight all kinds) or "miscellaneous" tell a risk system nothing. The Commission maintains a list of stop words that are not acceptable in a goods description, and the Release 3 page records an updated list taking effect on 3 August 2026. Describe what the goods are and what they do: "cotton knitted T-shirts for men" rather than "garments".
- No commodity code, or a wrong one. Guessing at a code because the field must be filled invites a problem later when the customs declaration disagrees with the ENS. Get the classification right once. If you are unsure, a binding ruling gives certainty; see Customs Binding Rulings.
- Missing party details. A consignee address that is only a city, or a party name that differs from the one on the invoice, produces requests for information.
- Late data. The ENS must be lodged before the deadline that applies to the mode. If your forwarder is still waiting for your packing list when the cut-off passes, the cargo can miss the vessel or flight, or sail with an incomplete filing.
- Mismatched documents. The ENS, commercial invoice, packing list and bill of lading should tell the same story. Differences in weight, package count or description are what draw attention.
- Assuming the carrier handles it. On a consolidated or LCL shipment with a forwarder's house bill, the carrier files the master and the forwarder files the house data. If your forwarder is not set up to file house-level data, the shipment is exposed.
Consolidated cargo is where this bites hardest. When several shippers' goods share one container or one air waybill, each house consignment needs its own accurate data, and one vague line can hold up the group. If you ship LCL, read FCL vs LCL Shipping with this in mind.
What to send your forwarder, and when
Treat the following as your ICS2 pack for any consignment bound for the EU. Send it when you book, not when the cargo is ready.
- Full names and addresses of consignor, consignee and any notify party, matching the commercial invoice, plus EORI numbers where the parties have them.
- A precise goods description for every distinct product line, in plain language, with no stop words.
- The commodity code at the Harmonized System level you have classified, and the basis for it if there is doubt.
- Packages, marks and numbers, and gross weight per house shipment, consistent with the packing list.
- The commercial invoice and packing list in draft, so the filer can cross-check before lodging.
- Dangerous goods details if relevant, since these also feed the risk assessment.
- A contact who can answer a request for information the same day.
Then confirm three things with the forwarder in writing: who is lodging the ENS (carrier, forwarder or a representative), what data cut-off they need from you for this mode and route, and that they will send you the MRN once accepted. If your goods will transit the EU to a non-EU destination, or arrive through one Member State and move on under transit, ask specifically how the ENS and the transit declaration are being linked, since that linkage is what the June 2026 end of derogations concerned.
A wider view of the customs process, including where the ENS sits before clearance, is in Customs Clearance Explained and Customs Clearance and Trade Compliance.
Using CargoLinked
Not every forwarder is set up for ICS2 house-level filing, and it is worth asking before you book, not after cargo is stuck. You can browse the CargoLinked directory by country, city or trade lane to find forwarders on your route, and put the ICS2 questions above to each. Listings are self-published, so check credentials and ask for references. If you would rather have forwarders come to you, post the shipment on the requests board, state that the goods are EU-bound and ask quoters to confirm who files the ENS. Quotes carry a validity date and expire after it.
