Import from Thailand to USA: ISF 10+2 Filing 2026
Importer Security Filing (ISF, or "10+2") is the single most common source of avoidable penalties when you import from Thailand to the USA. CBP wants ten data elements from you and two from the carrier, filed 24 hours before the vessel loads at Laem Chabang — not before it arrives in the US.
The 10 elements you must supply
| # | Element | Where it comes from |
|---|---|---|
| 1 | Seller (owner) name & address | Thai factory or trading company |
| 2 | Buyer (owner) name & address | Your US entity |
| 3 | Importer of record number | Your EIN / CBP assigned number |
| 4 | Consignee number(s) | Usually same EIN |
| 5 | Manufacturer (supplier) name & address | Actual production site in Thailand |
| 6 | Ship-to party | Your warehouse or 3PL |
| 7 | Country of origin | Thailand (per substantial transformation) |
| 8 | HTSUS number (6 digits min) | Your broker's classification |
| 9 | Container stuffing location | CFS or factory address |
| 10 | Consolidator name & address | Your Thai forwarder |
The "+2" (vessel stow plan and container status messages) is the carrier's job, not yours.
The 24-hour rule from Laem Chabang
Thai sailings typically cut off documentation 72 hours before ETD. Your ISF must be accepted by CBP before the container is loaded. Practically this means your forwarder needs the commercial invoice and packing list from the factory at least 4 days before sailing. Build that into your PO terms — see our supplier onboarding checklist.
Penalties in 2026
- Late filing: $5,000 per shipment
- Inaccurate filing: $5,000
- No filing at all: $5,000 plus a "do not load" hold and possible CBP exam
Liquidated damages are usually mitigated on a first offence if you can show a compliance program. Repeat offences are not.
Practical workflow that works
- Factory sends draft invoice + packing list at booking, not at shipping
- Broker classifies HTS at the SKU level once, stores it in a parts database
- Forwarder files ISF at booking confirmation, then amends if quantities change
- Amendments before loading are free — use them liberally
Common Thai-specific mistakes
- Listing the trading company as manufacturer when goods were made at a subcontracted plant. CBP compares this against origin claims. If you are unsure who actually produced your goods, that is a bigger problem than ISF — read our factory verification guide.
- Using a Bangkok office address as the stuffing location when the container was loaded at a Chonburi CFS.
- Reusing a prior HTS code after a product spec change.
FAQ
When exactly is the ISF due for a Thailand shipment?
24 hours before the container is loaded onto the vessel at the Thai port of lading, not 24 hours before US arrival.
Do I need ISF for air freight from Thailand?
No. ISF 10+2 applies only to ocean cargo. Air shipments are covered by advance air cargo screening rules handled by the carrier.
Can my Thai supplier file ISF for me?
No. The importer of record is legally responsible. Your US customs broker or a licensed filer must submit it, using data your supplier provides.
Is ISF required for LCL consolidations?
Yes, per house bill. Each importer in the consolidation files their own ISF. See our LCL vs FCL comparison.
What if my order quantity changes after ISF is filed?
File an amendment before vessel loading. Amendments after loading may still be accepted but increase your exam risk.