What Does a Customs Broker Do?

A customs broker helps an importer complete customs business for a shipment. In the United States, that can include preparing and transmitting entry information, working through admissibility questions, supporting tariff classification and customs valuation, arranging payment of duties and fees, and responding when an entry needs correction. The broker acts as the importer’s authorized agent; the broker does not replace the importer, the carrier, or the government agency that makes the final customs decision.

This guide uses the U.S. import process as its main frame and adds a Canada-specific distinction for northbound freight. Regulatory details were verified on July 21, 2026. The exact requirements still depend on the direction of travel, commodity, value, country of origin, importer, mode, port, and any other government agency that regulates the goods.

The broker turns shipment facts into a customs entry

The International Trade Administration describes U.S. customs brokers as private individuals or businesses licensed, regulated, and empowered by U.S. Customs and Border Protection. Their work covers customs entry and admissibility, product classification, customs valuation, and duties, taxes, refunds, rebates, or drawback (International Trade Administration).

For a commercial import, the broker typically needs to connect several pieces of information:

• the importer of record and other parties to the transaction;
• a precise description of each product, including its material, construction, and intended use;
• quantity, package count, weight, dimensions, and country of origin;
• commercial value, currency, and the terms of sale;
• the proposed tariff classification and any claimed special tariff treatment;
• permits, certificates, or data required by agencies that regulate the commodity; and
• the carrier, mode, port of entry, and expected arrival details.

The broker uses those facts to prepare or support the customs filing. A broker may point out missing or inconsistent information, but the shipper and importer still need to provide truthful, shipment-specific records. A vague product description, unsupported origin claim, or invoice that disagrees with the packing data cannot be cured by simply sending the file to a broker.

What a customs broker handles

The exact service agreement varies, but these are the core functions to confirm.

Entry preparation and transmission

The broker organizes the information required for the entry and transmits customs business under the authority granted by the client. That may include identifying the entry type, submitting classification and valuation data, providing supporting documents, and coordinating answers to government questions.

Classification, value, origin, and duty support

The broker can help analyze how the goods should be described and classified, how customs value should be reported, whether an origin claim is supported, and which duties, taxes, and fees may apply. These subjects are connected but not interchangeable: a product’s country of origin is not automatically the country it shipped from, and a free-trade-agreement claim is not automatic merely because the route crosses Canada, Mexico, or the United States.

Release coordination and payment handling

The broker may transmit entry information, arrange payment, monitor the customs status, and coordinate a response if customs requests more information or selects the freight for examination. A customs release is a government action. A broker can manage the filing and communication, but should not promise that a shipment will be released by a particular time or without inspection.

Compliance communication and corrections

Current U.S. broker rules require due diligence in information given to a client. If a broker knows a client has not complied with the law or has made an error or omission in a required record, the broker must promptly advise the client about the problem and proper corrective action (19 CFR Part 111). This is one reason to choose a broker for communication quality as well as filing speed.

Customs broker vs. freight forwarder vs. carrier

These roles may be offered by one logistics company, but they solve different problems.

Party	Primary job	What to confirm
Customs broker	Conduct customs business for the importer under the applicable authorization	License or permit, importer authorization, filing scope, commodity experience, fees, and point of contact
Freight forwarder	Arrange international transportation and related logistics services	Mode, routing, bookings, document handoffs, consolidation, and which separate entity performs brokerage
Carrier	Physically transport the freight and provide the contracted transportation service	Pickup and delivery requirements, equipment, service terms, manifest data, and operational cutoffs

The International Trade Administration lists booking cargo space, arranging and tracking freight, preparing export documents, warehousing, consolidation, and cargo insurance among common freight-forwarder services. Customs brokerage focuses on customs entry and compliance. If one provider offers both, ask which legal entity is acting as broker and which is arranging transportation.

For U.S. customs business, the broker must execute the customs power of attorney directly with the importer of record or drawback claimant rather than through a freight forwarder or another third party. The regulation also protects direct communication between the broker and the importer or other party in interest (19 CFR Part 111).

Do you have to hire a customs broker?

CBP says there is no legal requirement to hire a customs broker to clear goods entering the United States. An importer can choose to file its own entry, while many importers use a broker for convenience and expertise. In either case, CBP says the importer remains ultimately responsible for knowing the requirements and ensuring the import complies with federal rules (CBP: Do I need a customs broker?).

Using a broker can be especially useful when the shipment involves a formal entry, unfamiliar product classifications, special tariff treatment, regulated goods, multiple agencies, or a correction to an earlier filing. The decision should be based on the shipment’s facts and the importer’s own ability to manage the filing, not on a universal value or weight threshold stated by a transportation provider.

The power of attorney does not transfer importer responsibility

In the U.S., a customs power of attorney authorizes the broker to act as the principal’s agent for customs business. CBP’s current broker guidance explains that the broker generally must execute that authorization directly with the client before transacting customs business in the client’s name. The same guidance notes an exception when the broker itself is acting as importer of record (CBP Customs Broker Guidance, version 2.0).

Before signing, confirm:

• the legal name and importer number of the principal;
• the broker entity receiving authority;
• the scope and duration of the authority;
• who may communicate instructions and receive notices;
• how duties, taxes, government fees, and brokerage charges will be funded; and
• how the authorization can be changed or revoked.

A power of attorney gives authority; it does not make incomplete product data accurate or move the importer’s compliance responsibility to the carrier.

Canada uses a separate broker framework

A U.S. broker relationship does not automatically cover a Canadian import. Canada Border Services Agency says Canadian importers may prepare and submit their own release and accounting documentation or authorize an agent. The importer remains responsible for the accounting documentation, duties and taxes, and later corrections involving classification, origin, and valuation. CBSA also states that only a licensed customs broker may account for goods and pay duties under section 32 of Canada’s Customs Act as an agent of an importer or owner (CBSA licensed customs brokers).

For cross-border freight, identify the import country first, then confirm the importer and broker authority for that jurisdiction. A shipment moving from the United States into Canada follows the Canadian import arrangement; a shipment moving from Canada into the United States follows the U.S. import arrangement. Some shipments may need coordinated providers on both sides, but that depends on the commercial and regulatory facts.

What to send before the quote and customs handoff

Prepare one master shipment record before requesting transportation and brokerage support:

1. Legal names and addresses for the seller, buyer, importer, consignee, shipper, and delivery location.
2. Origin and destination postal codes, intended border crossing or port when known, mode, pickup date, and delivery requirements.
3. A specific commodity description for each line item, plus composition and use when those facts affect classification or admissibility.
4. Country of origin, quantity, commercial value, currency, and terms of sale.
5. Handling-unit count, package type, packaged dimensions, total weight, and freight class when required for the selected service.
6. Known tariff classifications, permits, certificates, or special-program documents, clearly marked for broker review rather than treated as self-validating.
7. The importer number, broker contact, power-of-attorney status, and instructions for duties and government fees.

Reconcile the commercial invoice, packing list, bill of lading, broker instructions, and carrier data before pickup. If two records describe the same freight differently, resolve the difference instead of asking each provider to work from its own version.

Questions to ask when choosing a broker

• Is the broker licensed and permitted for the U.S. customs business involved, or licensed by CBSA for the Canadian work involved?
• Who is the named broker entity, and will the importer communicate with it directly?
• Does the team regularly handle this commodity, mode, port, and any partner-agency requirements?
• Which filings, payments, corrections, and post-entry services are included?
• Which information remains the importer’s responsibility, and when must each item be supplied?
• How are brokerage fees, government charges, examination-related costs, and other pass-through amounts separated on the quote or invoice?
• Who monitors open questions, and how are holds, document requests, and corrections escalated?

Fees are a private service arrangement, so request the scope and pricing in writing. Avoid treating a broker’s fee as the same thing as duties, taxes, carrier charges, storage, or examination-related costs.

Prepare the lane and customs details together

The customs plan and transportation plan must describe the same shipment. Shipocity is backed by a team with more than 40 years of combined logistics experience. Through established industry relationships, the platform helps businesses compare competitive freight rates for their specific shipment.

When the importer, broker arrangement, commodity details, handling units, and lane are defined, start a cross-border freight quote.

Sources

• Customs Brokers and Freight Forwarders - International Trade Administration
• Do I Need a Customs Broker? - U.S. Customs and Border Protection
• Customs Broker Guidance, Version 2.0 - U.S. Customs and Border Protection
• 19 CFR Part 111, Customs Brokers - Electronic Code of Federal Regulations
• Licensed Customs Brokers - Canada Border Services Agency