Canada's September 8 Tariffs: The U.S. Marking-Origin Test
Primary lensOrigin review
Sub-topicUSMCA review
Evidence base10 records used
Use caseOrigin decision support
Why this is new
Finance Canada has published 874 eight-digit tariff items for its planned September 8 counter-tariffs, with a 15%, 25%, or 50% rate on each line. The backgrounder gives importers a workable exposure screen before the implementing order and CBSA accounting instructions are publicly available.
Each SKU needs two findings. Its Canadian tariff item must appear in the new table, and the good must be eligible to be marked as a good of the United States under Canada's CUSMA-country marking regulations. Seller location, invoice address, warehouse location, and port of departure do not decide the second question.
For a Canadian customs compliance manager, the decision is whether to flag the SKU as screen-positive for the September 8 broker instruction. The working record is one SKU-level marking-origin determination file.
The August 23 Traverse Analysis on Canada's announced retaliation reached a different stopping point. At publication, Ottawa had not released a product schedule, rate, origin test, or in-transit exception. The August 25 backgrounder now supplies the tariff-item table and rates, states the announced origin test and effective time, and identifies an in-transit exception. Customs teams can begin a supported SKU screen while reserving the CARM fields that depend on the operative instrument and agency guidance.
The new origin test matters for goods that pass through the United States and for products made from materials or processing in more than one CUSMA country. U.S. seller and routing data can flag SKUs for review. They cannot establish U.S. marking origin. A CUSMA preferential claim also needs to be kept separate because the marking regulation uses it only under specified conditions.
The table is a classification screen
Traverse counted 21 tariff-item rows at 15%, 449 at 25%, and 404 at 50%. The 874 total counts unique rows in the official backgrounder. It does not count individual products, shipments, import value, or expected revenue.
Listed rate
Tariff-item rows
What the count establishes
15%
21
The published row carries a 15% announced rate
25%
449
The published row carries a 25% announced rate
50%
404
The published row carries a 50% announced rate
Total
874
The backgrounder contains 874 unique eight-digit Canadian tariff items
Finance Canada labels the product descriptions as indicative and directs readers to use the table with the Schedule to Canada's Customs Tariff. Cheese, appliance, steel part, and electronic device are search terms. The list match requires the Canadian eight-digit tariff item.
Classification also enters the marking analysis. Section 4 of the marking regulations uses changes in tariff classification for many goods, and Schedule III contains the product rules. The same unsupported classification can produce both a false table match and a false origin result.
The SKU file should therefore begin with the Canadian classification, product specifications, and the supporting rule or ruling. A supplier's U.S. tariff number may help identify the product, but the Canadian item in Finance Canada's table is the field that must be matched.
Sections 4 through 7 provide the basic determination
Section 4 assigns origin where a good is wholly obtained or produced, made exclusively from domestic materials, or produced so that each foreign material undergoes the applicable tariff change and satisfies the other requirements. It also recognizes goods covered by a chapter note in Schedule III.
When section 4 does not decide the country, section 5 looks to the single material that gives the good its essential character. Section 6 addresses sets, mixtures, and composite goods when sections 4 and 5 do not provide the answer.
Section 7 deals with the remaining cases. If production consists only of minor processing, origin follows all materials that merit equal consideration as imparting essential character. If the good is produced by simple assembly and the equally important parts have the same origin, that country controls. In other cases, the rule points to the last country where production occurred.
These provisions require production facts. The file needs the finished good's classification, material descriptions and origins, material classifications where relevant, each production location, and the order and substance of the processing.
Before recording the section 4 result, apply sections 11 through 13 where relevant. Section 11 can disregard limited nonqualifying foreign materials under stated de minimis thresholds. Section 12 removes specified accessories, packing, and indirect materials from the tariff-change inquiry. Section 13 excludes a tariff change that results merely from a change in end use or from dismantling or disassembly. It also excludes mere dilution that does not materially alter the product and the mere collection of parts. The regulation defines marking as minor processing. Marking a finished product in a U.S. warehouse therefore cannot be treated as a manufacturing fact without further support.
Section 8 can override that result
Section 8 expressly overrides sections 4 through 7. It applies only when the good qualifies as originating under CUSMA, neither section 4 nor section 5 identifies a single CUSMA country, and a completed and signed certificate of origin supports the claim. When those conditions are met, marking origin becomes the last CUSMA country where the good underwent production other than minor processing.
The worksheet should record the section 4 and section 5 result before relying on the override. Section 8 is unavailable when either provision already identifies one CUSMA country, or when the CUSMA originating claim or certificate is missing.
The certificate supports a CUSMA originating claim. It is not a standalone declaration that the good has U.S. marking origin. The last qualifying production may have occurred in Canada, Mexico, or the United States.
Sections 9 and 10 cover separate cases
Section 9 addresses a narrow but important route to another CUSMA country. If sections 4 through 7 determine Canada as the country of origin, but the good underwent production other than minor processing in another CUSMA country before importation, origin becomes the last CUSMA country where that production occurred. A Canadian result can therefore become a U.S. result when supported U.S. production satisfies section 9.
Section 10 applies when fungible goods of different origins are commingled. If direct identification is impractical, the importer may retain the multiple-country result or choose an authorized inventory method.
Sections 9 and 10 are issue flags rather than mandatory steps for every SKU. The reviewer should record the facts that trigger either provision and the resulting treatment. Ending the worksheet at section 8 can miss a section 9 change or the section 10 choice for commingled fungible goods.
A distribution-centre example
Consider a finished lamp made outside the United States, sold by a U.S. distributor, stored in Ohio, and shipped from that warehouse to Canada. The commercial file contains a U.S. seller, invoice, and ship-from address. Those records show the route and parties.
If the Ohio activity is limited to storage or marking, it does not by itself establish U.S. marking origin. The reviewer still needs the lamp's Canadian classification, the applicable Schedule III rule, its materials, and the production history. The result may point to the production country rather than the distribution country.
The answer could change if a U.S. facility performs supported production that satisfies section 4, the section 8 override, or section 9. A different bill of materials or processing sequence can also change the result. The example illustrates the file structure and does not decide the origin or counter-tariff rate for any actual lamp.
What Canadian import teams should do now
Use one versioned marking-origin file for each material SKU or genuinely identical product family. A reviewer should be able to reproduce the screen without relying on a supplier's country label.
Controlled field
Evidence to preserve
Stop condition
Canadian tariff item
Classification rationale, specifications, and any applicable ruling
The item is unresolved or supported only by an indicative description
September 8 table result
Exact tariff-item row and announced rate
No exact Canadian tariff-item match is documented
Basic marking determination
Sections 4 through 7, applying sections 11 through 13 where relevant
Required facts are missing or section 8 is tested before the section 4 and 5 inputs are complete
Override and special provisions
Section 8 override and the separate section 9 or 10 rules when triggered
The file omits a triggered override, production rule, or fungible-goods choice
Announced-screen status
Screen-positive, unresolved, or outside the published backgrounder
The status is presented as final legal or accounting liability
Accounting instruction
Public implementing instrument, CBSA notice, CARM code, and coordination terms
A required filing field is unpublished or unvalidated
For a recurring or high-value SKU with a disputed origin result, an importer can request a National Customs Ruling on marking. CBSA says the ruling can address whether a good must be marked, the correct country, and the method and manner of marking. A request for a country-of-origin determination must include the materials, the basis for treating each as domestic or foreign, and the locations and sequence of production. CBSA's service standard is 120 days after receipt of complete information, so a new request should not be relied upon to resolve an ordinary September 8 deadline.
Procurement can use seller and ship-from fields to identify candidates. Customs should assign screen-positive status only after documenting the Canadian tariff-item match and U.S. marking-origin conclusion. Do not finalize the broker instruction until the implementing order and CBSA accounting guidance supply the missing fields.
What would change the calculus
Finance Canada says the countermeasures will begin at 12:01 a.m. on September 8 and will not apply to U.S. goods in transit to Canada when they come into force. The backgrounder does not state a time zone or the evidence required for that exception. It says CBSA administration details will follow.
As of 1:42 p.m. EDT on August 25, the reviewed Customs Notices index contained no notice for the new measure. No publicly available implementing order was identified by that cutoff. The Orders in Council database notes that approved orders are generally posted on the third working day after approval, so absence from the public search does not establish that no order has been approved.
Section 53 of the Customs Tariff allows the Governor in Council to impose a surtax in response to foreign government measures. CBSA's surtax memorandum describes the Order in Council as the record that identifies the goods, amount, and other terms. The related customs notice provides the CARM surtax code and calculation instructions.
The published order and CBSA notice could alter scope or administration. They should be checked for the accounting event, in-transit evidence, Chapters 98 and 99 treatment, corrections, drawback, remission, and coordination with existing counter-tariffs. Finance Canada says some steel and aluminum goods previously subject to 25% will be at 50%, while certain derivatives remain at 25% and other existing measures, including autos, remain. The operative text must show how those treatments fit together.
Importers can complete the announced origin screen now. They should reconcile it to the operative order and CBSA instructions before releasing a final CARM instruction.
Caveats
This analysis uses official records available through 1:42 p.m. EDT on August 25, 2026. Finance Canada's tariff-item table is a backgrounder, not the implementing order. A later Order in Council, Canada Gazette publication, CBSA customs notice, remission instrument, or correction could change the scope, transition treatment, or filing instruction.
The 874-row count is Traverse's calculation from the official table. It counts unique eight-digit tariff items, not products, shipments, import value, or expected revenue. Marking origin is fact-specific. A conclusion should not be extended to a different bill of materials or production sequence without support.
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