What is ISF (10+2)
ISF is a security filing required for many ocean imports into the U.S. It is commonly called “10+2”
In plain language, it is an early data submission about the shipment, parties, and supply chain details
Who usually files ISF
In many cases, the customs broker files ISF on behalf of the importer, but the importer must provide accurate information
Why sellers get tripped up
ISF problems rarely happen because someone forgets it. They happen because key info is missing or changing too late
Common causes
- Supplier name and address not finalized
- Consignee or ship-to changes
- Product descriptions too vague
- Last-minute changes to quantities or packing
What data is commonly needed
Your broker may request some or all of the following
- Importer name and address
- Consignee name and address
- Seller and shipper info
- Manufacturer or supplier info
- Ship-to location
- Commodity description and HTS/HS info if available
- Container and booking details when available
Best practice for sellers
If you want fewer surprises, do this early
- Prepare a clean draft commercial invoice and packing list
- Confirm FOB port and ready date
- Keep product descriptions specific
- Keep one consistent reference number across your documents
How I help
I coordinate document readiness and handoff so your broker gets clean inputs earlier, which reduces last-minute back-and-forth