Recent CBSA D-Memorandum revisions and customs notices do not all create the same kind of work. Some alter the interpretation of a tariff item, some add data to an import declaration, and others change the records an importer should be ready to produce during verification. Treating every notice as a general “tariff update” can leave the broker instruction, the CARM entry and the supporting file out of sync.
A more useful review is to connect each change across three layers: the legal or tariff basis for the entry, the information submitted in the Commercial Accounting Declaration (CAD), and the records retained to support the declaration. The approach below is particularly relevant to commercial importers handling automotive goods, aluminum or other controlled products through GTA distribution operations in Toronto, Mississauga or Brampton.
The three layers that should be reviewed together
1. Classification and tariff-treatment logic
The first question is whether the revised memorandum or notice changes how the goods qualify for a tariff item or preferential treatment. CBSA revised Memorandum D10-15-15 on August 14, 2026, consolidating earlier memoranda concerning tariff items 9958.00.00 and 9959.00.00. The memorandum addresses the interpretation and administration of those items for parts, accessories and materials used with automobiles, trucks, buses and similar vehicles. Automotive importers relying on either tariff item should compare the revised memorandum with their classification database, product descriptions and broker instructions.
The tariff schedule itself also changed for tariff item 8507.60.20 on August 6, 2026. Customs Notice 26-21 reports that the description changed from “electrically-powered motorcycles” to “motorcycles or cycles with an electric motor.” Importers with electric motorcycles, electric cycles, batteries or related goods should have their classification files reviewed against the amended wording rather than relying only on an old product master.
Preferential tariff treatment is a separate part of this layer. From September 1, 2026, eligible United Kingdom-origin goods became eligible for the Comprehensive and Progressive United Kingdom Tariff, using tariff treatment code 35. Importers sourcing from the UK, Channel Islands or Isle of Man should review origin qualification, treatment coding and the records supporting the claim. The applicable Customs Tariff files were updated in version T2026-2, made available by CBSA on September 16, 2026.
2. CAD fields and release instructions
The second question is whether the change affects information transmitted at accounting. Memorandum D11-6-8 was revised on September 9, 2026, to reflect CARM Release 3 in the verification process, including the replacement of the B3-3 and B2 forms with the CAD. Commercial importers and customs agents responding to verification questionnaires, corrections, refunds, re-determinations or requests for books and records should therefore ensure that internal procedures refer to the current CAD structure.
Some customs notices require a specific CAD code or field. For specified wood cabinets, vanities and subassemblies imported for commercial purposes, Customs Notice 26-17 describes a provisional safeguard surtax of 25 percent effective July 31, 2026. The notice identifies safeguard code 26169A and field 87 for the CARM CAD. The measure may apply for up to 200 days, and the notice sets out exclusions and product-scope conditions. Importers should not apply the code solely because a product is described commercially as cabinetry; the goods should first be checked against the notice’s scope and exclusions.
Specified U.S.-origin goods became subject to counter-surtaxes effective September 8, 2026. Customs Notice 26-23 identifies rates of 15 percent, 25 percent or 50 percent of value for duty, with CARM codes 26186A, 26186B and 26186C respectively. The notice states that the measures can affect commercial and casual imports, including goods shipped through a third country, and may apply below ordinary de minimis thresholds. Country-of-origin records, commercial invoices and CAD coding should therefore be reviewed together.
Aluminum imports present a different type of CAD control. Effective October 1, 2026, importers using General Import Permit No. 83 for covered aluminum products must provide the country of largest smelt, the country of second-largest smelt where applicable, and the country of most recent cast through the CBSA Customs Single Window/Integrated Import Declaration process. The information must also be supported by retained records. The official materials identify specified exceptions, including qualifying CSA releases and covered imports with a value for duty of $5,000 or less.
3. Verification and supporting records
The third question is whether the importer can demonstrate why the classification, origin, value or CAD data was correct. The revision to D11-6-8 is important here because it addresses CBSA verification of origin, tariff classification and value for duty in the CARM Release 3 environment. A classification screen or broker message alone may not establish the underlying facts. The file should be capable of connecting the declared tariff item or treatment to commercial descriptions, origin evidence, valuation information and any product-specific data used at accounting.
For aluminum subject to the new smelt-and-cast reporting, the retained records should support the reported countries and the importer’s use of GIP No. 83. For U.S.-origin surtaxed goods, the file should support origin and the selected surtax code. For UK preferential treatment, it should support both the origin claim and treatment code 35. The precise record set depends on the goods and transaction, so importers should discuss the evidence with their customs broker and trade-compliance team.
Notices that require a different review path
Not every notice should be routed through the same workflow. Customs Notice 26-20, issued August 21, 2026, clarified the existing treatment of tariff-rate-quota goods entered into a customs bonded warehouse. A shipment-specific Global Affairs Canada import permit is required to receive the within-access duty rate. The permit may be obtained after warehouse entry if it covers the date the goods exit the warehouse. CBSA expressly described this as a clarification rather than a policy change.
That distinction matters for warehouse operators and importers using bonded facilities, including GTA facilities. The review should focus on the permit timing and the warehouse-exit event, not on changing a classification database or adding a new general CAD surtax code.
Customs Notice 26-24 is also operationally different. Effective immediately on September 14, 2026, authorized Courier Low Value Shipment participants could use third-party air carriers that were not Partners in Protection certified, subject to the conditions in the notice. The courier must continue to maintain active PIP certification, and the third-party carrier must remain bonded and present shipments at the designated sufferance warehouse. This is primarily a courier and air-carrier process issue, not a change to ordinary importer classification.
A practical broker-review sequence
- Identify the trigger. Record whether the source is a revised D-Memorandum, a Customs Tariff amendment, a surtax notice, an origin measure or a reporting requirement.
- Map the affected transactions. Use product numbers, tariff items, countries of origin, permit programs and release or accounting methods to identify shipments that could fall within scope.
- Compare the declaration instruction. Confirm whether the change affects a tariff-treatment code, surtax code, CAD field, Single Window data element or warehouse-exit process.
- Test the evidence. Confirm that invoices, origin records, technical descriptions, supplier data and permit documentation support the information being declared.
- Document the broker decision. Keep the effective date, source notice, affected products and approved instruction together so a later correction or verification can be traced to the applicable rule.
For a Mississauga, Toronto or Brampton importer, this review is most useful when completed before the next affected shipment reaches the accounting stage. The objective is not to treat every CBSA publication as a new obligation. It is to identify which part of the import record changed—and then make sure classification, CAD data and supporting evidence tell the same story.
Questions to discuss with your customs broker
- Does the revised D10-15-15 interpretation affect any automotive parts, accessories or materials currently entered under tariff item 9958.00.00 or 9959.00.00?
- Do any products require a review of tariff item 8507.60.20 because of the amended electric motorcycle and cycle description?
- Are UK-origin purchases eligible for tariff treatment code 35, and what origin records support the claim?
- Which shipments require safeguard code 26169A, U.S.-origin code 26186A, 26186B or 26186C, or the aluminum smelt-and-cast data elements?
- Can the retained records support the CAD declaration if CBSA requests verification of origin, classification or value for duty?
This article is general information, not advice for a specific shipment. Product scope, origin, tariff treatment, valuation and reporting exceptions should be confirmed against the applicable official notice and the transaction record.