Key Takeaways
- U.S. broker liability for motor-carrier torts does not have a Canadian equivalent under the Customs Act—importers remain the party legally responsible for duty and classification accuracy on every CAD.
- CBSA verification and AMPS penalties target the importer of record, not the broker, even when the broker prepared the Commercial Accounting Declaration.
- A licensed customs broker in Canada provides professional indemnity insurance for errors in filing, but that coverage does not shield the importer from CBSA duties, penalties, or interest.
- Post-CARM, every CAD filed through the CARM Client Portal carries the importer's business number—ensuring CBSA knows exactly who to assess when a verification finds short-paid duty or mis-claimed origin.
The U.S. case getting airtime on earnings calls
C.H. Robinson spent time on its Q1 earnings call discussing the Montgomery v. South Carolina Department of Transportation case now before the U.S. Supreme Court. That case asks whether a freight broker can be held liable for a motor carrier's negligence when the broker arranged the haul. The implications for U.S. freight brokers are large—insurance premiums, indemnity language in carrier contracts, and potential exposure to tort claims all hinge on how SCOTUS reads the Federal Aviation Administration Authorization Act preemption rules.
For Canadian customs brokers and the importers who retain them, the Montgomery case is interesting but not directly relevant. Canada has no equivalent doctrine that would hold a licensed customs broker liable for a carrier's safety record or commercial freight damages. What matters more is understanding where liability does sit under Canadian law—and it sits squarely with the importer of record.
Importer liability under the Customs Act
When a licensed customs broker prepares and submits a Commercial Accounting Declaration through the CARM Client Portal, the importer's business number appears on that CAD. CBSA treats the importer of record as the party responsible for the accuracy of the declared HS classification, origin claim, valuation, and duty calculation. If a post-release verification finds that duty was underpaid, CBSA assesses the importer—not the broker.
The Customs Act gives CBSA four years from the accounting date to initiate a verification under section 42. During that window, the agency can request commercial invoices, supplier certifications, production records, or any other documentation needed to confirm that the CAD was correct. If the importer cannot substantiate a CUSMA origin claim or if the HS 6-digit classification was wrong, CBSA will issue a statement of adjustment for duty, GST, and interest, plus potential AMPS penalties.
A customs broker provides professional advice and files the CAD on your behalf, but the legal obligation to pay duty and comply with import requirements never transfers. Most brokers carry errors-and-omissions insurance to cover their own negligent mis-classification or tariff advice. That coverage protects the broker's balance sheet if a client sues for professional negligence. It does not pay CBSA when the agency assesses additional duty or AMPS penalties to the importer.
Why CARM didn't change the liability picture
CBARM Phase 2 Release 3 moved CAD filing, payment, and release prior to payment security into the CARM Client Portal. Importers now post RPP bonds or commercial sureties directly with CBSA, and monthly K84 statements reconcile provisional releases against final accounting. The portal made the importer's business number more visible in every transaction, but it did not rewrite the Customs Act.
Importers remain the party at risk. If your broker submits a CAD claiming CETA preference and CBSA later determines the goods do not meet Article 23.4 origin rules, the agency will recover MFN duty from you, not from the broker. If an anti-dumping margin applies under SIMA and your broker missed it, CBSA assesses you for the full Normal Value adjustment plus interest.
The one shift CARM introduced is transparency. Pre-CARM, many importers never saw the paper B3. Post-CARM, every CAD is visible in your CARM Client Portal account, along with duty calculations, payment due dates, and compliance notices. That visibility is useful—it lets you spot errors before CBSA does—but it also makes clear that your business number is on the hook.
Where broker indemnity does and doesn't help
A reputable customs broker will carry professional liability insurance. If the broker mis-classifies a shipment and you incur legal fees defending a CBSA assessment, you may be able to recover those costs from the broker's insurer. If the broker gave you bad tariff advice that led to short-paid duty, you may have a negligence claim.
But the indemnity does not cover the underlying duty and tax. CBSA assesses the importer for what was owed on the day of import, regardless of who made the filing error. The agency will charge interest from the original accounting date. If the contravention triggers an AMPS penalty—Level 1 CUSMA origin contraventions typically start around CAD 1,600 per entry, and Level 2 can exceed CAD 3,500—the importer pays that, too.
Broker insurance is a backstop for the broker's professional errors, not a guarantee that the importer walks away clean. That's why import compliance starts with accurate supplier documentation, not just faith in the broker's HS lookup.
Non-Resident Importer structures as a liability shift
Some Canadian buyers use a Non-Resident Importer (NRI) arrangement, naming their U.S. or overseas supplier as the importer of record in Canada. Under an NRI setup, the foreign supplier's business number appears on the CAD, and CBSA assesses them for any duty shortfall or AMPS penalty.
This shifts customs liability offshore, but it does not eliminate your commercial exposure. If your supplier refuses to pay a CBSA assessment and walks away, CBSA may still pursue the goods or the ultimate consignee. More often, suppliers simply refuse NRI terms—they don't want Canadian Customs Act liability on their books. When NRI does work, it's usually because you have leverage in the relationship or because the supplier already maintains a Canadian entity for other business reasons.
For most mid-market importers, remaining the importer of record and managing compliance internally or through a broker makes more sense than trying to export the risk. That means keeping clean documentation, auditing your broker's CAD filings before they hit the portal, and maintaining the four-year retention CBSA requires.
What to watch when your broker files a CAD
You don't need to second-guess every tariff lookup, but you should audit high-risk areas:
- HS classification on capital equipment, mixed-material goods, or anything that straddles two tariff headings. If duty swings by five points depending on classification, have your broker document the rationale and keep it in your compliance file.
- CUSMA or CETA origin claims when your supplier's certificate is vague or missing. If the broker ticks the preference box on the CAD without a cert on file, you're exposed the day CBSA starts a verification.
- Valuation adjustments for royalties, assists, or related-party transactions. If your commercial invoice understates transaction value and CBSA catches it, the assessment is yours.
- SIMA goods like certain steel, aluminum extrusions, or solar modules. Anti-dumping margins change quarterly, and missing one can mean a six-figure reassessment on a single container.
We routinely see importers catch these issues in CARM Client Portal review before the CAD is finalized. That window—between broker draft and final submission—is where you prevent problems, not after CBSA flags the shipment.
Physical ops and drayage don't create customs liability, but they surface it
When a shipment sits on exam hold at a CBSA-bonded warehouse because the CAD origin claim doesn't match the supplier invoice, the dwell fees and missed delivery windows are symptoms, not causes. The liability issue was baked in when the CAD was filed.
Our sister brand, FENGYE LOGISTICS, handles sufferance warehousing and cross-dock in Montreal. They see the downstream cost when a customs hold turns a two-day transit into a seven-day detention event. But the fix isn't better warehouse scheduling—it's accurate CAD preparation upstream. Drayage and warehouse ops amplify compliance failures; they don't create them.
The divergence worth understanding
U.S. freight brokers are watching SCOTUS to see if they inherit carrier tort liability. Canadian customs brokers already know they don't inherit importer liability—the Customs Act settled that decades ago. What brokers do inherit is professional responsibility for the accuracy of the advice they give and the CADs they file. When that responsibility fails, the importer still pays CBSA first and sorts out broker negligence later.
If you're importing into Canada and treating your broker as a shield against CBSA risk, the Montgomery case is a useful reminder that liability frameworks are jurisdiction-specific. In Canada, the importer of record is the party at risk, full stop. A good broker reduces that risk by getting classification, origin, and valuation right the first time. But the legal obligation to pay duty and comply with import law never moves off your books.
We file CADs through the CARM Client Portal every day, and we carry professional indemnity insurance in case we get one wrong. If your current broker isn't walking you through where their coverage ends and your liability begins, get in touch.
Frequently Asked Questions
Does a Canadian customs broker assume legal liability for import duties?
No. Under the Customs Act, the importer of record remains liable for all duties, taxes, and penalties reported on the CAD. The broker files on your behalf, but CBSA assesses you if a verification finds short-paid duty or mis-classification.
What happens if my broker makes a classification error on a CAD?
CBSA will assess the importer for any duty shortfall, plus interest and potentially AMPS penalties under the Administrative Monetary Penalty System. Your broker's professional indemnity insurance may cover their filing error, but CBSA recovery action targets the importer of record.
How long does CBSA have to audit a CAD after release?
CBSA can initiate a verification within four years of the accounting date under section 42 of the Customs Act. Importers should retain all commercial invoices, packing lists, and origin certificates for that full retention period.
What is the typical AMPS penalty for a first-time origin mis-claim?
A Level 1 CUSMA or CETA origin contravention under AMPS typically starts around CAD 1,600 per entry. Repeat contraventions escalate quickly—Level 2 penalties can exceed CAD 3,500 per shipment.
Does CARM change who is liable for duty and tax on imported goods?
No. CARM Phase 2 Release 3 shifted CAD filing and payment into the CARM Client Portal, but the Customs Act importer-of-record liability framework remains unchanged. Every CAD still carries the importer's business number.
Can I claim CUSMA origin on a CAD if my supplier hasn't sent the certificate yet?
You can claim preference if you have a valid reason to believe the goods qualify, but you must obtain and retain the CUSMA certification of origin within five years. If CBSA verifies and you cannot produce it, duty and interest will be assessed retroactively.
What does a customs broker's professional indemnity insurance cover?
Most brokers carry errors-and-omissions coverage for negligent mis-classification or tariff advice. That insurance protects the broker—it does not pay CBSA duties or AMPS penalties assessed to the importer.
Should I use a Non-Resident Importer (NRI) structure to shift liability to my U.S. shipper?
An NRI arrangement makes your U.S. supplier the importer of record in Canada, so CBSA assessments hit them. But you remain contractually exposed if your supplier walks away, and many suppliers refuse NRI liability. It's a commercial trade-off, not a magic shield.
Originally published at https://www.canflow-global.com/en/insights/why-us-broker-liability-cases-dont-cross-the-border-and-what-that-means-for-cana/.
