If you import goods into the United States by ocean, an Importer Security Filing is one of the first requirements your shipment has to clear, and it happens before your cargo even leaves the foreign port. The ISF is simple in concept but strict in practice. Miss the deadline or submit inaccurate information, and you can face liquidated damages, cargo holds, and inspections. Here’s what the filing is, what it requires, and when it’s due.
What Is an Importer Security Filing
An Importer Security Filing is advance cargo information that U.S. Customs and Border Protection (CBP) requires for ocean shipments headed to the United States. It’s commonly called “10+2” because it requires 10 data elements from the importer and two additional sets of information from the ocean carrier. CBP uses the data to assess security risk before cargo is loaded aboard a vessel bound for the U.S., which is why the filing deadline falls so early in the shipment.
The ISF applies only to ocean cargo. Air, truck, and rail shipments aren’t subject to it. It applies to less than container load (LCL) shipments as well as full containers. Bulk cargo is exempt, and break bulk cargo follows modified timing rules.
The 10 Importer Data Elements
The importer, or an agent filing on the importer’s behalf, must provide:
- Seller
- Buyer
- Importer of record number or foreign trade zone applicant identification number
- Consignee number
- Manufacturer or supplier
- Ship to party
- Country of origin
- Commodity HTSUS number, at least to the six-digit level
- Container stuffing location
- Consolidator (stuffer)
The “+2” comes from the ocean carrier, which separately submits the vessel stow plan and container status messages. The importer doesn’t file those, but they complete CBP’s picture of the shipment.
When the ISF Is Due
The most common misunderstanding about the ISF is its timing. The deadline isn’t tied to when your cargo arrives in the United States. It’s tied to when the cargo is loaded at the foreign port.
Eight of the ten data elements must be submitted no later than 24 hours before the cargo is laden aboard the vessel. The remaining two, the container stuffing location and the consolidator, must be submitted as early as possible and no later than 24 hours before the vessel arrives at a U.S. port.
CBP also allows some flexibility at the start. For four elements (manufacturer or supplier, ship to party, country of origin, and HTSUS number), you can submit the best information available at the time of filing. Those must then be updated with accurate information as soon as it’s known, and no later than 24 hours before arrival. More broadly, if any filed information changes before the goods reach the U.S. port, the filing has to be updated.
In practice, this means the information has to come from your supplier well before the ship sails. Importers who wait until the cargo is on the water are already too late.
What Happens If the ISF Is Late or Wrong
CBP can assess liquidated damages of $5,000 per violation for a late, inaccurate, or incomplete ISF. It can also hold cargo, refuse permission to unload it, and, in serious cases, seize it. Shipments with ISF problems are also more likely to be selected for examination, which adds time and cost.
Those delays rarely stay contained. A container held at the port while an ISF issue is resolved can start accumulating storage charges such as demurrage and detention, turning a filing error into a much larger expense.
Who Is Responsible for Filing
Responsibility for the ISF falls on the ISF importer, typically the party that owns, purchases, or receives the goods. Most importers have a licensed customs broker or forwarder file on their behalf, but delegating the filing doesn’t transfer the responsibility. If the information is wrong, the importer remains accountable.
Every ISF must also be backed by a bond, either a continuous bond covering filings throughout the year or a single-transaction bond for an individual shipment. Liquidated damages are claimed against that bond.
How to Stay Compliant
A few habits prevent most ISF problems. Collect the required details from your seller and supplier early, ideally when the order is placed rather than when the cargo is ready. Make sure your HTSUS classification is accurate, since it carries through to the entry that follows. Confirm the bill of lading number on the ISF matches the shipment, since that’s how CBP links the filing to the cargo. And update the filing promptly if anything changes. Strong shipping documentation practices and clear Incoterms with your supplier make every one of those steps easier.
Getting Your ISF Right Every Time
The ISF is a small filing with outsized consequences. When it’s handled correctly, it’s invisible. When it isn’t, it can hold up a shipment before it ever leaves port. For companies that import by ocean regularly, building ISF into the ordering process, rather than treating it as a last-minute task, is the most reliable way to avoid penalties and delays.
Jade International files Importer Security Filings as part of its import and customs services, coordinating the data with your suppliers so your shipments clear on time. If you’d like help with ISF on your next ocean shipment, reach out to our team.
