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What is Importer Security Filing (ISF)?


Import / Customs



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What is ISF?

Also known as “10+2,” ISF is a U.S. Customs and Border Protection (CBP) regulation, specifically mandated on ocean cargo imports entering the United States, and is required to be filed with the CBP at least 24 hours before sailing from last port of origin.

Why is ISF important? 

ISF is important because it improves CBP’s ability to flag high-risk shipments that may pose a safety threat upon arrival. This is also to ensure that they can prevent smuggling substances or people inside of the U.S border. 

What must be filed with ISF?

All shipments consisting of goods that are intended to be entered into the United States and goods intended to be delivered to a foreign trade zones 

Importer of record number/ FTZ applicant identification number
Consignee number(s)
Manufacturer or Supplier*
Ship to Party*
Country of Origin*
Commodity Harmonized Tariff Schedule of the United States (HTSUS) number*


*Importers have flexibility while filing these documents, but must submit updated versions, as soon as new information becomes available.



What happens when you don’t comply with ISF Regulations? 

Failure to comply with the rule results in monetary penalties, increased inspections and ultimately a delay of cargo. Late filing penalties are $5000 per violation. CBP may withhold the release or transfer of the cargo. Additionally, CBP may refuse to grant a permit to unlade or take the merchandise. If such cargo is unladen without the permission of CBP, it automatically becomes subject to seizure and thus a “do not load” order and inspection at origin of arrival.


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