Identifiers, valuation, bonds and origin · Ten data elements before loading

ISF filing

The US Importer Security Filing must be filed before ocean cargo loads. Late or inaccurate filing carries a penalty.

Key facts

ScopeOcean cargo imported into the United States
TimingGenerally 24 hours before the cargo is loaded at the foreign port
DataTen importer-provided elements plus the carrier's two, including seller, buyer, manufacturer and country of origin
Who filesThe importer or an agent; the broker often handles it
PenaltyA violation can lead to liquidated damages, commonly cited as up to USD 5,000 per violation
Official sourceUS CBP Importer Security Filing guidance

Ten data elements before loading

ISF is an advance security filing, not the customs entry. It gives CBP information about the parties and the goods before the container is loaded. The filing is due before loading, which means the supplier must provide the data early enough for the broker to file and correct it.

The elements most often missing are the manufacturer or supplier details, the country of origin and the harmonised code. A late change after filing can require an amendment, and repeated amendments attract attention.

Build the data into the purchase order

Ask the supplier for the ISF data at the purchase-order stage, not when the container is ready. The manufacturer name and address, the seller and buyer, the country of origin and the code should be part of the order confirmation.

The bond and the ISF are separate requirements. A valid bond does not file the ISF, and an ISF does not replace the entry. Both need an owner and a deadline in the shipment plan.

Frequently asked questions

Does ISF apply to air freight?

ISF is specific to ocean cargo. Air cargo has its own advance manifest rules.

Who is responsible for filing?

The importer is responsible for the accuracy; the broker or an agent usually files on the importer's behalf.

What happens if ISF is late?

The shipment can be held and penalties can apply. File early and amend promptly if the data changes.

Is ISF the same as the customs entry?

No. ISF is a security filing before loading; the entry is the import declaration filed when the goods arrive.

Tell me when the rules change

De minimis thresholds, import tax rates and marketplace fee schedules move more often than most price lists. Leave an address and we will send a short note when one of the tracked markets changes.

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