US Customs Clearance for China Imports: Process, Documents & Delays (2026)

Who is legally on the hook: importer of record

The importer of record (IOR) is responsible to CBP for classification, valuation, duty payment and recordkeeping — not your supplier, and not your forwarder. If a China-side forwarder offers a cheap DDP price and files the entry under a name you have never seen, you have lost visibility into an obligation that can still come back to you. Own the IOR position, appoint your own customs broker, and keep entry records for five years.

• Obtain your own CBP-assigned importer number (or use your EIN) rather than borrowing a forwarder entity.
• Post a continuous customs bond if you import more than a few times a year — it is cheaper than single-transaction bonds.
• Request the CBP Form 7501 entry summary for every shipment and reconcile it against your commercial invoice.

The clearance timeline, in the order it actually happens

Most "customs delays" are not CBP being slow. They are a filing that went in late or a document that did not match. Knowing the sequence tells you which party to chase.

• 1. Booking confirmed and cargo ready date agreed with the factory.
• 2. ISF (Importer Security Filing, 10+2) transmitted at least 24 hours before the vessel loads in China.
• 3. Export declaration filed in China; commercial invoice and packing list finalized.
• 4. Vessel sails; carrier issues the bill of lading and sends the arrival notice ahead of berthing.
• 5. Entry filed with CBP — up to five days before arrival, and generally within 15 days after.
• 6. Duty, tariffs, MPF and HMF paid; CBP releases the cargo or issues a hold.
• 7. Drayage or transload to your facility; free time at the terminal starts running immediately.

What you actually pay: duty, tariffs and fees

A landed-cost model built on ocean freight alone will be wrong by double digits. The classification-driven lines usually dominate.

• Regular duty at your HTSUS rate, which can range from free to well over 20%.
• Section 301 tariffs on China-origin lines, applied on top of regular duty.
• Merchandise Processing Fee: 0.3464% of entered value on formal entries, with a floor and ceiling per entry.
• Harbor Maintenance Fee: 0.125% of value on ocean shipments.
• Broker fees, ISF filing fees and bond costs.
• Terminal and demurrage exposure once free time expires — often the most avoidable line on the list.

Why shipments get held — and what it costs

Holds fall into two groups: document problems you can prevent, and agency exams you can only prepare for. Both are cheaper to solve before the container sails.

• ISF filed late or with wrong manufacturer data: liquidated damages up to USD 5,000 per violation.
• Description too vague ("parts", "gift", "samples") or invoice value inconsistent with the payment terms.
• Classification challenged: CBP requests information, and the cargo waits while you substantiate.
• VACIS X-ray exam: typically a few hundred dollars and 2–5 days. Tailgate exam: similar. Full intensive exam: often USD 1,000–3,000 plus a week or more.
• Partner-agency requirements missed — FDA prior notice for food, FCC for radio devices, CPSC certificates for juvenile products.
• UFLPA detention on exposed commodities, which is a documentation contest, not a queue.

The document set that clears cleanly

A clean entry is a boring entry: every number matches across every document. That consistency is built at the factory, not at the port.

• Commercial invoice with specific product descriptions, HTS lines, unit values, Incoterms and payment terms.
• Packing list matching carton counts, marks and weights to what was actually loaded.
• Bill of lading with shipper, consignee and notify party exactly as filed.
• Certificate of origin and, where relevant, mill or component-level traceability.
• Agency certificates and test reports referencing the same model numbers as the invoice.
• Loading photos and seal number evidence, which resolve short-shipment disputes later.

Where we intervene on the China side

Our team works the origin end of this process: verifying what is in the container, building the document set against your broker's requirements, and capturing the evidence that makes an exam or a claim survivable. Your broker files the entry; we make sure what arrives matches what was filed.