How to Handle Customs Holds and Inspections

A customs hold means CBP has paused the release of your shipment until it gets confident about the details. Your freight is sitting in the terminal, the clock is running on storage charges, and the release depends on you (or your broker) giving customs a clear, complete answer. The right first move is simple: find out the hold type. A document mismatch gets fixed with corrected paperwork, a physical exam gets scheduled and paid for, and a formal request for information has a legal deadline you cannot miss.

Most holds on China-origin shipments come down to a handful of causes: paperwork that disagrees with itself, an HS classification that looks too convenient, value questions, restricted-product rules from a partner agency like the FDA, or a targeted enforcement check. Every hold has a defined exit. Importers who respond quickly and precisely clear their freight far faster than those who panic, guess, or go quiet.

If your operation is still new to importing, pair this with our customs clearance walkthrough, which covers the normal sequence from arrival to release. This article is the troubleshooting version. And if a hold is already costing you sleep, this is exactly where a sourcing partner earns its keep. CN Ally catches document and classification problems at origin, before a container ever leaves China.

Why shipments from China get held

A hold is never random. CBP applies risk targeting to every entry, and China-origin freight carries a few structural reasons for extra attention: longstanding enforcement focus on valuation and classification accuracy, active antidumping and countervailing duty orders on many Chinese product categories, and partner agency rules for food, electronics, children's products, and anything touching the environment. Layered on top of all that is the fact that many holds are triggered by the entry paperwork itself, not by the product.

Here are the triggers importers run into most often, grouped by what the problem actually is:

Trigger family · What sets it off · Typical response

• Document mismatch: Value, quantity, currency, Incoterms, or consignee name disagrees across invoice, packing list, and bill of lading · Correct and reissue at the source; resubmit through your broker
• Classification doubt: HS code looks wrong, or a first-timer uses an unusually low-duty code · Justify the code with materials and function; see our HS classification guide
• Valuation questions: Declared value looks low vs. the product or market prices · Provide purchase orders, contracts, and proof of payment
• PGA requirements: Product needs FDA, FCC, EPA, or USDA clearance · Submit permits, test reports, or registrations to the agency
• Enforcement flags: Trademark suspicion, AD/CVD evasion, wood packaging or pest issues · Physical exam plus a paper trail showing genuine, compliant goods
• Missing basics: ISF late or wrong, unpaid duties, importer record problems · File correctly, pay up, fix the importer account

Two China-specific notes matter here. First, antidumping and countervailing duties apply to many Chinese goods categories, and CBP actively checks that importers are declaring scope correctly. Second, if your supplier is unknown to you, you cannot vouch for what's inside the container, which is why document discipline at origin and a pre-shipment inspection that confirms the goods match the invoice are worth far more than any post-hold firefighting.

The exam types, and what each one costs you in time

When people say "my shipment is held," they usually mean one of two things: a documentation hold (nobody is touching the freight, customs just wants answers) or an examination order (officers will physically look at the goods). Knowing which one you're facing changes everything about the timeline and the bill.

US container exams come in a few named forms, and the trade shorthand below is how brokers actually talk about them (operational labels, not formal CBP categories):

Exam · What happens · Typical timeline · Seals broken?

• VACIS / NII exam: Container X-rayed at the terminal · Hours to a day or two · No
• Tailgate exam: Officers open the doors, look inside, may pull cartons · 2–3 days · Yes
• CET exam: Deeper exam for security, trademark, or trade-remedy issues, often at a CES · Several working days · Yes
• Intensive / MET exam: Full unload, carton-by-carton inspection · 5–10 working days, sometimes longer · Yes
• USDA exam: Agricultural inspection for pests or wood packaging · Varies; can pair with others · Sometimes
• FDA or other PGA hold: CBP may release, but the agency hold stays until cleared · Weeks in some cases · No

The uncomfortable part: the importer pays for the exam. Moving the container to the examination station, unloading and reloading labor, storage during the process: those bills land on you, and customs does not waive them because the exam found nothing wrong. Which is another reason speed matters: a VACIS exam that clears in a day costs you almost nothing, while a week at a Centralized Examination Station racks up fees on top of demurrage at the terminal. If you want the full walkthrough of each level, Scarbrough's US customs exams explainer covers the same progression in more detail.

What to do the moment you learn of a hold

Do not guess. Work the sequence below, which is roughly the order experienced brokers follow:

1. Get the hold type, not just the tracking status. Generic tracking language ("clearance delay") tells you nothing useful. Ask your broker or forwarder for the actual hold description: document hold, exam order, which exam, PGA flag, or a formal notice. The response you prepare depends entirely on this answer.

2. Get your broker in the loop immediately, if they are not already. If you have been clearing freight without a licensed broker, a hold is the moment that changes. Brokers speak to CBP directly, file corrections in the ACE system, and know which office is holding your freight and why. Importers working alone consistently resolve holds slower.

3. Fix the paper problem at its source. Most document holds are disagreements between papers, not errors on a single page. The commercial invoice says one value, the packing list implies another, the bill of lading names a different consignee. Find the inconsistency, have the document's issuer reissue it corrected, and resubmit through your broker. Resist the urge to "explain" a mismatch away with a cover letter unless your broker agrees that is enough; a corrected document answers the question permanently.

4. Respond to formal notices inside their deadlines. Two forms matter most:

• CF-28 (Request for Information): CBP wants more documentation on an entry: invoices, specs, proof of payment, manufacturing records. You typically have 30 days from the date of issue to respond. Ask for an extension before the deadline if needed; they are sometimes granted. Ignore it and CBP decides the issue on the information it already has, which is how entries end up reclassified or revalued against you.
• CF-29 (Notice of Action): CBP is telling you it has taken or is proposing an action: a reclassification, a duty increase, a marking decision. For a proposed action you usually have about 20 days to argue your position before it becomes final. Once the action is marked as taken, the decision stands and your recourse is a formal protest after liquidation. Trade compliance guides lay out both forms' triggers and timelines in detail.

Treat a CF-28 as the warning and a CF-29 as the decision. Getting a CF-28 and answering it well is how you avoid the CF-29.

5. Control the cost meter from day one. Ask your forwarder how many free days remain before demurrage starts, and calendar the date. If an exam is ordered, ask where the freight is going and get the examination station's fee schedule in writing so there are no surprises. Keep a single log of every call, email, and document submitted. If you later dispute charges, that log is your evidence.

6. Keep the information flowing to your supplier. Many holds get fixed fastest at origin. A certificate your supplier already has, a packing list reissued with correct carton counts, a test report they filed with another buyer last month. Ask. Suppliers that export to your market regularly have usually seen your exact hold before.

How to read a hold notice

Hold notices are terse, but every line tells you something.

The agency code tells you who ordered the hold. CBP holds are the most common; PGA codes (FDA, USDA, FCC) mean a second agency has its own requirements. A CBP hold plus a PGA flag means two clearances, not one.

The exam or hold type tells you the severity. A VACIS scan is routine and fast. A CET or intensive exam means someone suspects a real problem: misclassification, valuation, trademark, or trade-remedy evasion. The deeper the exam, the more complete your document package needs to be.

The location tells you where the meter runs. Freight at the marine terminal accrues demurrage; freight at a Centralized Examination Station accrues exam and handling fees. Knowing the location tells you which costs to ask about first.

The reference number is your tracking key. Every call and email should cite it. Brokers, forwarders, and CBP officers all work from reference numbers.

What not to do during a hold

Don't ignore it and hope it resolves itself. Holds don't expire; they escalate. An unanswered CF-28 becomes a CF-29, and an unanswered exam order becomes storage fees. The cheapest hold is the one you engage with on day one.

Don't submit documents that aren't true. Backdating an invoice or creating paperwork after the fact turns a delay into fraud exposure. If a document is wrong, have its issuer reissue it honestly.

Don't pressure your broker to cut corners. Asking a broker to "just get it released" puts their license and your shipment at risk.

Don't reroute to evade. Diverting to another port to dodge an exam is evasion. The hold follows the entry, not the port.

Don't promise delivery dates until the freight is released. Tell customers about the delay early, but commit to dates only when you have a release in hand. A second broken promise costs more than the first delay.

How much a customs hold actually costs

Costs come from three different directions at once, and importers underestimate the total because they only picture the exam fee. Here is the full picture:

A hold rarely costs just the delay. The meter runs on several lines at once.

Demurrage accrues when the container sits in the terminal past its free days (usually 3–7, varying by port and carrier), at tiered daily rates that escalate the longer it sits. Detention is the separate per-day charge when you pick up the container but return the empty late. Exam costs cover moving the container to a Centralized Examination Station and unloading/reloading it — labor and facility fees paid by the importer. If freight moves off-terminal while the issue resolves, storage or bonded warehouse fees add daily rates that vary by location. When the hold reveals an underdeclared value or wrong HS code, duty corrections add duties, sometimes across the whole entry. And complex responses — CF-28/CF-29 work, protests — bring broker and legal fees on top of everything else.

The total for a multi-day hold on a single container routinely reaches four figures, which is why prevention (the next section) is the cheapest line item in this article.

Demurrage starts while you're still figuring out the hold. Free time is measured in single-digit days, rates escalate in tiers, and demurrage must be paid before the container is picked up. If a hold looks like it will run past your free time, the cheapest question to ask is whether anything can be done to resolve the document side before the exam even happens. Run parallel tracks, not serial ones.

How to prevent the next hold

Holds are cheapest when they never happen. Almost everything customs questions can be settled at origin, long before the container ships:

1. Align your documents before export. The commercial invoice, packing list, bill of lading, and any certificate should agree on value, currency, quantity, Incoterms rule, and party names. A five-minute cross-check beats a five-day hold.
2. Classify once, classify correctly. Pin down your HS code, work through the classification process, and keep the reasoning on file. CBP notices when the same product arrives under a suspiciously favorable code.
3. Declare honest values and keep proof. Invoices, purchase orders, contracts, and payment records should all tell the same story. Valuation questions are hard to answer if your own files contradict each other.
4. Check PGA rules before you buy. If the product is food, cosmetics, electronics with a radio module, children's toys, or pesticides, confirm the agency requirements during supplier selection, not at the port.
5. Confirm origin and AD/CVD scope. Know whether your product falls under a trade remedy order and declare accordingly. "I didn't know" is not a defense.
6. Inspect before it ships. A pre-shipment inspection verifies that the goods match the invoice: quantity, description, markings. Catching the mismatch at origin eliminates the most common cause of exam-driven disputes at the port.
7. Work with a broker and a forwarder who know your commodity. Experienced eyes catch declaration mistakes the first time, and established broker relationships make a hold call get answered faster.

Frequently asked questions

How long does a customs hold usually last?

There is no fixed number because a hold ends when customs is satisfied, not when a timer runs out. A document mismatch fixed with a reissued invoice can clear within days. A VACIS exam often clears in a day or two. An intensive exam with lab samples or an agency review can take weeks. The biggest controllable factor is how fast and completely you respond. Incomplete answers restart the clock.

Do I have to pay for a customs exam even if nothing is wrong?

Yes. Examination costs (moving the container to the exam site, unloading and reloading, storage during the process) are charged to the importer regardless of the outcome. Finding nothing wrong releases the cargo but does not erase the bill, which is one more reason prevention pays.

What is the difference between demurrage and detention?

Demurrage applies while the loaded container sits inside the port terminal past its free days. Detention applies after you have picked up the container and keep the equipment past the carrier's free days for unloading and returning the empty. Both are per-day charges paid by the importer or consignee, and both can run at the same time on a bad hold.

Can my shipment be held if I use DDP shipping?

Yes. DDP means the seller handles duties and delivery, but customs can still flag the shipment for documents, exam, or agency requirements, and the delay hits you regardless. Make sure the supplier's arrangement includes a real plan for customs contact, not just a duty-paid price quote.

What happens if I ignore a CF-28?

CBP proceeds without your input. The typical result is a CF-29 notice of action that reclassifies your goods, revalues the shipment, or cancels a duty preference, followed by liquidation at the higher duty. You lose the cheapest stage of the process (the conversation) and inherit the most expensive one (the bill, possibly plus protest costs).

Will a hold affect my future shipments?

It can. A hold that uncovers a classification error, valuation problem, or agency violation gets noted against your importer record, and repeat problems invite closer scrutiny of subsequent entries. Conversely, a hold resolved cleanly with good documentation generally leaves your record unharmed. This is why fixing the underlying cause matters more than just getting this one container out.

Your hold playbook in one rule

Treat every hold as a question with a price tag on the delay. Find out exactly what question customs is asking, answer it completely and truthfully with the right documents, and watch the demurrage calendar while you do it. Document holds get fixed at the paperwork source. Exams get paid for and endured. Formal notices get answered inside their deadlines: thirty days for a CF-28, about twenty for a proposed CF-29. The best hold is the one your broker never has to call you about: documents, classification, and compliance sorted before the container leaves the factory.

If you are setting up regular imports from China and want the origin side of that equation handled (supplier verification, document checks, and inspections before goods ship), write to CN Ally at hi@cnally.com. Prevention is always the cheaper invoice.