ACE AMS filing is the electronic transmission of an ocean cargo declaration (the manifest) to U.S. Customs and Border Protection before cargo bound for the United States is loaded abroad. The vessel carrier must file it, and an NVOCC can file its own house bills directly if it meets CBP's conditions.
Two acronyms get mixed together. The Automated Manifest System (AMS) is the name the regulations still use for CBP's electronic manifest channel, and the Automated Commercial Environment (ACE) is the platform CBP now runs it on. CBP describes ACE as the U.S. “Single Window” for trade processing, including manifest data (CBP: Automated Commercial Environment). In daily conversation, “filing AMS”, “filing ACE” and “sending the manifest” all mean the same thing: transmitting the cargo declaration for each bill of lading to CBP.
The cargo declaration is the electronic equivalent of CBP Form 1302. It lists every bill of lading on the vessel with its shipper, consignee, cargo description, quantity, weight, container and seal numbers. CBP uses it to screen cargo for risk before it ever leaves the foreign port, which is why timing matters as much as accuracy.
The obligation sits with the incoming carrier. Under 19 CFR 4.7(b)(2), CBP must receive the electronic cargo declaration from the incoming carrier for any vessel required to make entry in the United States. If you operate or charter the vessel, the manifest is yours.
NVOCCs have a choice. An NVOCC that is licensed by or registered with the Federal Maritime Commission and holds an International Carrier Bond with the conditions of 19 CFR 113.64 may transmit its own cargo declaration information directly to CBP. If it does not, it must fully disclose that information to the vessel carrier, which then reports it. Many NVOCCs self-file so that their customers' names and house-bill details are not passed to the ocean carrier.
| Party | What the rule says | Typical practice |
|---|---|---|
| Vessel operating carrier | Must file the cargo declaration for the vessel (19 CFR 4.7(b)(2)). | Files master bills, plus house bills for NVOCCs that do not self-file. |
| FMC-licensed or registered NVOCC with an international carrier bond | May transmit its cargo declaration information directly to CBP (19 CFR 4.7(b)(3)(i)). | Self-files its house bills through ACE. |
| NVOCC that does not self-file | Must fully disclose the cargo information to the vessel carrier. | Sends house-bill data to the carrier before the cutoff. |
| Freight forwarder (19 CFR part 112) | Not an NVOCC for this rule. | Works through the carrier or NVOCC issuing the bill. |
For containerized cargo, CBP must receive the cargo declaration 24 hours before the cargo is laden aboard the vessel at the foreign port. That is 24 hours before loading, not before sailing and not before arrival in the United States. An NVOCC that self-files is held to the same clock.
There are two exceptions. Bulk cargo, meaning homogeneous cargo stowed loose in the hold such as grain, oil, coal or ore, is exempt from the pre-loading deadline. Break bulk carriers can apply to CBP for an exemption for qualifying break bulk cargo. For exempted bulk and break bulk cargo, CBP must receive the declaration 24 hours before the vessel arrives in the United States. Any containerized cargo on the same voyage still follows the 24-hours-before-loading rule.
The required elements are listed in 19 CFR 4.7a(c)(4). Most problems come from a handful of them, so it pays to know them well:
Every bill of lading also needs a unique number of up to 16 characters: the issuer's four-character SCAC followed by up to 12 letters or digits. The rule says the same number cannot be reused for three years after issuance.
Whether you are a carrier or a self-filing NVOCC, the routine is similar for every sailing:
The cleanest results come when the manifest is generated from the same records your team uses to issue the bill of lading. In GDZ-ISIS ACE filing, for example, the manifest is uploaded to CBP straight from the bills of lading already in the system, and approvals, holds and inspections are tracked per shipment.
The regulation is direct about consequences. A master who fails to provide manifest information on time, or transmits false information, may be liable for civil penalties under 19 U.S.C. 1436, in addition to liquidated damages under the international carrier bond of $5,000 for each violation. An NVOCC that elects to self-file and misses the deadline, or transmits false information, faces the same $5,000 per violation under its bond. The bond conditions in 19 CFR 113.64 cap these advance cargo information claims at $100,000 per conveyance arrival.
Money is only part of it. CBP's own manifest guidance lists Do Not Load holds, holds for examination and seizure among the possible enforcement actions. We cover prevention in detail in how to avoid CBP manifest penalties and holds.
The manifest is one of several electronic filings tied to the same shipment. On imports, the importer's security filing (ISF, often called “10+2”) runs alongside it; see ISF 10+2 for NVOCCs and carriers. On exports, the shipper or its agent files Electronic Export Information in AES. Each filing has a different responsible party, but they all draw on the same booking, parties and cargo data, so a single, consistent record makes every one of them easier.
If you are an NVOCC deciding whether to self-file, look at how your NVOCC software handles bills of lading, CBP responses and amendments before you commit, and confirm bond and filing details with your customs broker or CBP client representative.
The regulations still refer to the Automated Manifest System, while CBP processes ocean manifests in the Automated Commercial Environment, its Single Window platform. In practice both names refer to the electronic ocean manifest sent to CBP.
For containerized cargo, CBP must receive the cargo declaration 24 hours before the cargo is laden aboard the vessel at the foreign port. Exempted bulk and break bulk cargo is due 24 hours before the vessel arrives in the United States.
Yes. An NVOCC licensed by or registered with the FMC and holding an international carrier bond with the 19 CFR 113.64 conditions may transmit its cargo information directly to CBP. Otherwise it must give the full information to the vessel carrier.
No. 19 CFR 4.7a says generic descriptions such as “FAK”, “general cargo” and “STC” are not acceptable. Use a precise description or the six-digit HTS number if the shipper provides it.
The regulation provides for liquidated damages of $5,000 per violation under the international carrier bond, up to $100,000 per conveyance arrival, in addition to possible civil penalties. Check current enforcement practice with your customs broker.