U.S. Section 122 tariff litigation and the Canadian CAD filing question

Key Takeaways

• U.S. tariff litigation does not change Canadian CBSA filing obligations, but contested duty rates upstream can create CUSMA origin uncertainty for goods transshipped through the U.S.
• When filing a CAD under CARM, you declare the tariff treatment you believe correct at the time of release; corrections can be filed within four years under Customs Act section 32.2.
• RPP bond security must cover the full duty liability at MFN rates if CUSMA or CETA preference is later denied during a CBSA verification.
• If your U.S. supplier’s landed cost includes contested Section 122 duties, your Canadian HS classification and valuation may need adjustment to avoid double-counting origin inputs.

U.S. tariff litigation does not pause Canadian CAD filings

A U.S. trade court ruled President Trump’s Section 122 tariffs illegal, and importers south of the border are now weighing whether to sue for refunds or injunctions. That fight sits entirely in U.S. jurisdiction, but Canadian customs brokers are getting questions from clients whose supply chains touch the U.S.: if a tariff is contested or struck down in American courts, does that change how we file a Commercial Accounting Declaration under CARM?

Short answer: no. CBSA applies Canadian tariff schedules and trade agreements. The fact that a U.S. importer is litigating Section 122 duties does not suspend or alter the MFN rate, CUSMA preference, or CETA treatment you declare when the same goods cross into Canada. You file the CAD using the tariff treatment you believe correct at the time of release, and if facts change later, you request a correction under Customs Act section 32.2.

The longer answer involves origin, valuation, and bond exposure, especially when goods are manufactured in the U.S. using imported inputs subject to the contested tariff, or when a Canadian importer buys from a U.S. distributor who has already paid (or is contesting) Section 122 duties. Those scenarios create wrinkles in CUSMA regional value content calculations and in the commercial invoice price you declare to CBSA.

CUSMA origin claims when upstream tariff costs are in dispute

CUSMA Chapter 4 rules of origin hinge on regional value content (RVC) thresholds. For most goods, 75 percent of the net cost must originate in a CUSMA territory. The formula allows you to deduct the value of non-originating materials, but tariffs paid on those materials are treated as part of the material cost, not deductible overhead.

If your U.S. supplier manufactures a product using Chinese steel that was subject to a 10 percent Section 122 tariff, and that tariff is later refunded or ruled invalid, the supplier’s actual material cost drops retroactively. The CUSMA certificate of origin your supplier issued at the time of sale may have been calculated using the tariff-inclusive cost, which could push the RVC below the 75 percent threshold once the tariff is unwound.

CBSA does not track U.S. court rulings in real time. If you file a CAD claiming CUSMA preference and provide a valid certificate of origin, CBSA will accept it at release. But if CBSA later initiates an origin verification under D11-4-2 and discovers that the supplier’s cost buildup included a tariff that was refunded, the preference claim may be denied. You would then owe MFN duty retroactively, plus interest from the original release date, and your RPP bond covers that liability.

We routinely advise clients to request updated certificates of origin from U.S. suppliers whenever there is a material change in input costs, including tariff refunds. If the supplier cannot provide a compliant certificate under the revised cost structure, you should file the CAD at MFN rates and skip the CUSMA claim rather than risk a verification denial and an AMPS penalty down the line.

Valuation adjustments when the commercial invoice includes contested duties

CBSA uses transaction value as the primary basis for customs valuation. That means the price actually paid or payable for the goods, adjusted for assists, royalties, and other adds listed in Customs Act section 48. If you buy from a U.S. distributor who has already imported the goods and paid Section 122 duties, the distributor’s landed cost may include those duties, and the price you pay reflects that.

The question: does the Section 122 duty form part of the transaction value you declare on your CAD?

Under CBSA policy, duties and taxes levied in the country of export after the goods leave the factory are not included in transaction value. Section 122 is a U.S. import duty, not a production cost, so in principle it should not inflate the Canadian customs value. But if the U.S. distributor’s invoice is a single line-item price with no breakout, and you have no visibility into how much of that price is tariff versus margin, you may be declaring an inflated value.

When we see this pattern, we ask the client to request an invoice breakdown from the U.S. supplier: factory cost, freight to the U.S., Section 122 duty paid, U.S. inland costs, and distributor margin. If the supplier cannot or will not provide that detail, we file using the invoice price as stated and document the request in the client’s file. If CBSA later questions the value during a verification, we can show we made a reasonable effort to isolate non-dutiable elements.

If the Section 122 tariff is ultimately refunded to the U.S. distributor and the distributor does not adjust your future pricing, you are paying for a tariff that no longer exists. That is a commercial issue, not a customs one, but it does mean your Canadian duty bill (calculated as a percentage of customs value) is higher than it should be. Some clients have negotiated price-adjustment clauses tied to tariff refunds; most have not.

RPP bond exposure when preference claims are contested

Most Canadian importers with regular volume operate under release prior to payment, posting a continuous RPP bond so CBSA releases cargo before the monthly duty payment clears. Under CARM, the bond amount is set at 100 percent of your average monthly duty and GST liability, recalculated quarterly from your K84 monthly statement.

If you routinely claim CUSMA preference and pay zero or reduced duty, your bond sits lower than an importer paying MFN rates. But if CBSA later denies a batch of CUSMA claims during an origin verification, the arrears owed can exceed your posted bond, and CBSA will demand a top-up or suspend release privileges until the shortfall is covered.

When U.S. tariff litigation introduces uncertainty into your supplier’s cost structure, the risk of a failed CUSMA claim rises. We have seen importers voluntarily increase their RPP bond or switch selected shipments to pay-on-release to limit exposure during a verification window. That decision depends on your monthly volume, the dollar value of duties at stake, and how confident you are in the supplier’s origin documentation.

If your bond is sized tight and a verification lands, talk to your broker about interim security options before CBSA issues a formal demand. Posting additional cash collateral or a separate transaction bond can keep cargo moving while you work through the origin dispute.

Transshipment and country-of-origin marking when goods route through the U.S.

Some Canadian importers buy goods manufactured in Asia, shipped to a U.S. distribution center, and then trucked north. If those goods were merely stored or repackaged in the U.S. without substantial transformation, they retain the country of origin of the place of manufacture for Canadian marking and tariff purposes.

If the U.S. importer of record paid Section 122 duties on those goods and is now suing for a refund, that has no bearing on the HS classification or origin you declare when the goods cross into Canada. You file the CAD using the manufacturer’s country, claim MFN or applicable FTA treatment (CPTPP if the goods are Vietnamese, for example), and document the U.S. transshipment leg in your broker file.

The complication arises if the U.S. warehouse performed any operation that could be argued as substantial transformation: relabeling for the Canadian market, kitting, quality inspection that resulted in rework, blending. CBSA may treat the U.S. as the country of origin in that case, and you would file using U.S. origin (qualifying for CUSMA if the transformation meets the product-specific rule). The contested Section 122 tariff then becomes part of the cost discussion above.

We handle this scenario weekly at our bonded warehouse in Montreal, where goods arrive from the U.S. for same-day release into Canada. When the commercial invoice shows a U.S. seller but the packing list references an Asian manufacturer, we ask for a supplier affidavit confirming no substantial transformation occurred in the U.S. That document supports the non-U.S. origin claim if CBSA later requests proof.

Correction filings and the four-year window

Customs Act section 32.2 gives importers four years from the date of accounting to request a refund or correction of duties paid. If a U.S. tariff ruling or lawsuit eventually changes the cost structure of goods you have already imported into Canada, and that change invalidates a CUSMA certificate or alters your customs value, you can file a correction through the CARM Client Portal.

CBSA processes corrections as B2 adjustments (the label persists from the old system, though the form itself is now a CARM portal transaction). Most straightforward tariff-classification or origin fixes clear within 90 days if you provide complete documentation: revised certificate of origin, updated commercial invoice, supplier affidavit, and a written explanation of the change.

If the correction results in additional duty owing, you must pay interest from the original release date at the prescribed rate published by the Canada Revenue Agency. If the correction results in a refund, CBSA pays interest at the same rate, credited to your CARM account. The four-year clock is absolute; miss it and the duty assessment is final, regardless of new information.

We run correction filings for clients every month, usually triggered by post-importation price adjustments, retroactive FTA certificates, or CBSA verification findings. When U.S. tariff litigation is the trigger, the documentation burden is heavier because you need to prove the chain: the U.S. court ruling, the supplier’s refund or cost adjustment, and the resulting change in the Canadian customs value or origin calculation. If your U.S. supplier will not cooperate, the correction claim may fail for lack of evidence.

When to escalate and when to move on

U.S. Section 122 litigation will take months, possibly years, to resolve through appeals. Canadian importers who depend on U.S.-manufactured goods or who buy through U.S. distributors cannot pause CAD filings while the American courts deliberate. You declare what is correct under Canadian law today, post the bond to cover worst-case duty exposure, and build a process to handle corrections if upstream facts change.

The importers who get burned are the ones who assume a contested U.S. tariff automatically makes their CUSMA claim safe, or who declare a commercial invoice price without questioning whether it includes a refundable tariff. CBSA does not track U.S. litigation, and the verification officer reviewing your file in 2026 will not care that your supplier was involved in a lawsuit in 2025. You either have compliant origin documentation and a defensible customs value, or you do not.

If your goods touch the U.S. and you are unsure whether contested tariffs affect your CAD filings, that is a question to resolve now, not after the K84 arrears notice arrives. Get in touch.

Frequently Asked Questions

What is a CAD in Canadian customs clearance?

CAD stands for Commercial Accounting Declaration, the electronic filing that replaced the old B3 form under CARM Phase 2 Release 3 in October 2024. Every commercial import into Canada requires a CAD submitted through the CBSA’s CARM Client Portal or via EDI by a licensed customs broker.

How long do I have to correct a duty or origin declaration on a CAD?

Under Customs Act section 32.2, importers have four years from the date of original accounting to request a duty refund or correction. CBSA processes corrections through the CARM portal; most straightforward origin or tariff-classification fixes clear within 90 days if documentation is complete.

Does U.S. tariff litigation affect my CUSMA origin claim in Canada?

Indirectly, yes. If your goods are made in the U.S. using imported inputs subject to contested tariffs, the tariff cost may or may not count toward regional value content under CUSMA Chapter 4 rules of origin. CBSA verifications look at the supplier’s cost buildup, so contested duties can muddy the calculation until courts settle the rate.

What is an RPP bond and how much security do I need?

RPP stands for Release Prior to Payment. Under CARM, most commercial importers post a continuous bond so CBSA releases cargo before duties are paid. Minimum security is typically 100 percent of your average monthly duty and GST; CBSA calculates this from your K84 monthly statement and adjusts it quarterly.

Can I file a CAD claiming zero duty if a tariff is under legal challenge in the U.S.?

No. CBSA requires you to declare the tariff treatment applicable under Canadian law at the time of import. If the goods qualify for CUSMA preferential treatment, you file with CUSMA rates and provide a certificate of origin. U.S. litigation does not suspend Canadian duty obligations.

What happens if CBSA denies my CUSMA preference claim after release?

CBSA issues a Request for Information under D11-4-2 and may conduct a full origin verification. If the claim is denied, you owe MFN duty plus interest from the original release date, and CBSA may assess an AMPS penalty if the documentation was deficient. Your RPP bond covers the arrears.

How do I handle transshipped goods when the U.S. tariff rate is in dispute?

File the CAD using the HS classification and value applicable in Canada. If the goods were merely transshipped through the U.S. without substantial transformation, they retain the origin of the country of manufacture. Document the routing and ensure your commercial invoice reflects the original supplier’s cost, not inflated U.S. landed cost that includes contested duties.

Source: Supply Chain Dive