Clearing customs wrong can delay your shipment for days, trigger fines, or get your goods seized. Understanding how the process actually works—and who handles it—saves you time, money, and a lot of headaches.
What a Customs Broker Actually Does
A licensed customs broker acts as your authorized agent with the government. They prepare and submit import declarations, calculate duties and taxes, classify your goods under the correct tariff codes (HTS codes in the US), and communicate directly with Customs and Border Protection (CBP) or the equivalent agency in your country.
Without a broker, you're responsible for doing all of this yourself—which is legal but rarely practical if you're importing regularly or dealing with complex goods.
The Step-by-Step Clearing Process
Here's how a typical customs clearance works once your shipment arrives at a port of entry:
- Entry filing — Your broker submits an entry summary to customs, typically within 15 calendar days of arrival. This includes a commercial invoice, packing list, bill of lading, and any required permits or certificates.
- Classification and valuation — The broker assigns the correct HTS tariff code to your goods and declares their customs value. This directly determines how much duty you owe.
- Duty and fee calculation — Duties can range from 0% to 25%+ depending on the product category and country of origin. You may also owe MPF (Merchandise Processing Fee), HMF (Harbor Maintenance Fee), and any antidumping or countervailing duties.
- Customs exam — CBP may select your shipment for a physical inspection or document review. This can add 2–10 days to your timeline and sometimes incurs exam fees charged by the terminal.
- Release — Once customs is satisfied and duties are paid, they release your goods. Your broker transmits the release to the freight forwarder or carrier, who then moves the cargo to its final destination.
Documents You'll Need to Provide
Your broker can only work with what you give them. Missing or inaccurate documents are the number one cause of delays. Expect to supply:
- Commercial invoice — Must show seller, buyer, description, quantity, unit price, and total value in the transaction currency
- Packing list — Detailed breakdown of what's in each carton or pallet
- Bill of lading or air waybill — Issued by the carrier; confirms shipment details
- Country of origin documentation — Especially important for products subject to tariffs or trade agreements
- Certificates or permits — Required for regulated goods like food, electronics, textiles, or hazardous materials
If you're importing under a free trade agreement (like USMCA or CAFTA-DR), you'll also need a certificate of origin to claim preferential duty rates.
What Does Customs Brokerage Cost?
Broker fees vary depending on shipment volume and complexity. For a standard commercial import, most brokers charge:
- Entry filing fee: $75–$200 per shipment
- ISF (Importer Security Filing) fee: $25–$50 (ocean shipments only)
- Bond fee: If you don't have a continuous bond, a single-entry bond typically costs 0.4–0.5% of the shipment's value plus duties
- Additional fees: Document handling, exam coordination, duty disbursement, and storage recovery are often itemized separately
Annual continuous import bonds cost around $500–$600 for most importers and are worth it if you're clearing more than a few shipments per year.
Choosing the Right Customs Broker
Not all brokers are the same. Some specialize in specific product categories (food and beverage, automotive parts, textiles), while others focus on particular ports or trade lanes. When evaluating brokers, ask:
- Are they licensed by CBP (if US-based)?
- Do they have experience with your product category and HTS classification?
- What's their turnaround time for entry filing after receiving documents?
- Do they offer a compliance review if your goods are flagged?
- What are their full fee schedules—are there hidden disbursement charges?
Technology also matters. Brokers with modern portals give you real-time entry status, digital document uploads, and duty payment tracking instead of chasing answers by email.
Avoiding Common Import Mistakes
The costliest errors in customs brokerage import export work are almost always preventable:
- Misclassifying goods leads to underpaid duties—and CBP will bill you with interest
- Undervaluing a shipment to reduce duties is fraud, not strategy
- Missing ISF filing deadlines (24 hours before vessel loading) triggers $5,000 fines per violation
- Not accounting for antidumping duties on products like solar panels, steel, or aluminum can make an import unviable
Mercoly makes it easy to compare and find vetted customs brokerage and import/export providers in one place, so you're not starting from scratch every time you need a specialist.
Start comparing licensed customs brokers today and get your next shipment cleared without surprises.