For any brand importing products into the United States, customs clearance is the step that determines whether your inventory arrives on schedule or sits in a government hold while your stock runs dry. Most brands don’t think about customs until something goes wrong — and by then, the delay is already costing them. Understanding how customs clearance works puts you in a position to avoid the most common problems before they happen.
Customs clearance is the process of obtaining permission from US Customs and Border Protection (CBP) to import goods into the United States. Every commercial shipment entering the US must go through this process — there are no exceptions. CBP reviews your shipment documentation, verifies that duties and taxes have been paid, confirms your goods comply with applicable regulations, and either releases the shipment for delivery or holds it for further inspection.
For a deeper look at how freight forwarding fits into the broader import process, see our guide: What Is Freight Forwarding? A Brand’s Guide.
Before your ocean freight shipment even leaves the origin port, your customs broker must file an ISF — Importer Security Filing, also called a 10+2. This document must be submitted to CBP at least 24 hours before cargo is loaded onto the vessel. Missing or late ISF filings result in fines of up to $5,000 per violation and can trigger a CBP exam on arrival.
When your shipment arrives at the US port of entry, your customs broker files an entry with CBP. This includes the commercial invoice, packing list, bill of lading, and any other documents required for your specific commodity. The entry tells CBP what you’re importing, how much it’s worth, where it came from, and what HTS (Harmonized Tariff Schedule) code it falls under — which determines your duty rate.
Based on the HTS classification and the declared value of your goods, CBP calculates the duties owed. These must be paid before your shipment is released. Your customs broker handles this calculation and payment on your behalf, but the liability is yours as the importer of record.
CBP releases most shipments without a physical inspection — but not all. A percentage of shipments are selected for exam, either randomly or because something in the documentation triggered a review. There are several types of exams, ranging from a simple document review to a full physical unloading and inspection of the container. Exams add time and cost, and while you can’t always avoid them, clean documentation and consistent compliance significantly reduce your exam rate over time.
Once CBP releases the shipment, your freight forwarder coordinates drayage — trucking the container from the port to your warehouse or fulfillment center. From there, your inventory is received, checked in, and made available for fulfillment.
Most customs delays are preventable. The same documentation and compliance errors come up again and again across importers of all sizes:
| Issue | What It Means | How to Avoid It |
|---|---|---|
| Late ISF filing | Filed less than 24hrs before vessel loading | Brief your broker as soon as cargo is confirmed |
| Incorrect HTS code | Wrong duty rate applied, CBP flags discrepancy | Have your broker classify new products before first shipment |
| Undervaluation | Declared value doesn’t match invoice | Always declare accurate transaction value |
| Missing documentation | Incomplete entry package triggers hold | Use a documentation checklist for every shipment |
| Country of origin issues | Incorrect or unverifiable origin declaration | Confirm origin markings on goods and packaging |
| Restricted or regulated goods | Product requires additional agency clearance | Identify regulatory requirements before importing |
Every product going through the customs clearance process is classified under an HTS (Harmonized Tariff Schedule) code — a 10-digit number that determines your duty rate. Getting the HTS code right matters for two reasons: an incorrect code means you’re either overpaying duties or underpaying them, and CBP takes misclassification seriously.
HTS classification can be genuinely complex. A supplement in capsule form may have a different code than the same supplement in powder form. A bag with a laptop sleeve may be classified differently than a bag without one. Your customs broker should classify new products before your first shipment and document the rationale — this creates a defensible record if CBP ever questions your classification.
You can search HTS codes yourself at the official US International Trade Commission database at hts.usitc.gov — though for anything ambiguous, broker guidance is worth it.
If you’re importing from China, Section 301 tariffs are an additional layer on top of standard duty rates — and they apply to a broad range of product categories. Rates have varied significantly in recent years and are subject to ongoing policy changes, so staying current on your specific HTS code’s tariff status is important.
Some brands have responded by shifting sourcing to Vietnam, India, or other countries not subject to Section 301. Others have pursued tariff exclusions for specific products. Your customs broker should be actively advising you on how trade policy affects your specific commodity and sourcing strategy.
Any company importing commercial goods valued over $2,500 into the US is required to have a customs bond — a financial guarantee to CBP that duties, taxes, and penalties will be paid. There are two types:
Your customs broker will arrange the bond on your behalf. If you’re importing regularly, a continuous bond is almost always the right choice.
A licensed customs broker is a private individual or company licensed by CBP to conduct customs business on behalf of importers. They prepare and file your entry documentation, calculate and pay duties, communicate with CBP on your behalf, and keep you compliant with import regulations.
Using a licensed customs broker isn’t legally required for most imports — but it’s strongly advisable. CBP’s regulations are complex, change frequently, and the penalties for non-compliance fall on you as the importer of record, not your broker. A good broker pays for themselves many times over in avoided delays, penalties, and duty overpayments.
Argents Express Group has offered licensed customs brokerage since 1977. Our in-house customs team handles ISF filings, HTS classification, entry documentation, duty payment, and exam coordination for brands importing via ocean and air freight.
Because we also operate freight forwarding and fulfillment services under one roof, your shipment moves from overseas origin through customs and directly into your fulfillment inventory — with a single point of contact managing the entire process. There are no handoffs between a freight forwarder, a customs broker, and a 3PL — we handle all three.
Our customs clearance services include:
If you’re importing product and want a single partner managing freight, customs, and fulfillment, contact Argents Express Group to start the conversation.
Customs clearance is the process of obtaining permission from US Customs and Border Protection to import goods into the United States. It involves filing documentation, paying duties and taxes, and receiving CBP release before your shipment can be delivered to its final destination.
Most shipments with complete, accurate documentation are released by CBP within 1–2 business days of arrival. Shipments selected for a physical exam can take 3–10 additional business days depending on the exam type and port congestion. Clean documentation and consistent compliance are the best ways to minimize clearance time.
An HTS (Harmonized Tariff Schedule) code is a 10-digit product classification number used by US Customs to determine the duty rate applicable to imported goods. Every product imported into the US must be classified under the correct HTS code. Misclassification can result in underpayment or overpayment of duties and potential CBP penalties.
Legally, most importers are not required to use a licensed customs broker — but it’s strongly advisable. CBP regulations are complex, and as the importer of record, you are liable for compliance errors regardless of who prepares your documentation. A licensed customs broker reduces your risk and typically pays for itself in avoided delays and penalties.
An ISF (Importer Security Filing) is a document required by CBP for all ocean freight shipments entering the US. It must be filed at least 24 hours before cargo is loaded at the origin port. Late or missing ISF filings can result in fines of up to $5,000 per violation and increase the likelihood of a CBP exam on arrival.
Common causes include late or incorrect ISF filings, documentation errors, HTS misclassification, declared value discrepancies, country of origin issues, and random CBP exam selection. Working with an experienced licensed customs broker and maintaining clean, consistent documentation significantly reduces your risk of a hold.