Recent CBSA D-Memoranda and customs notices do not all have the same effect. Some introduce a new tariff measure, some revise the documents or data an importer should be prepared to provide, and others clarify an existing process without changing the underlying policy. Treating every revision as a new duty or compliance obligation can lead to the wrong response.
For importers in Toronto, Mississauga and Brampton, the practical task is to classify each notice before changing a customs procedure. The most useful questions are: did the tariff treatment change, did the evidence requirement change, did the accounting terminology change, or did CBSA only explain how an existing rule applies?
Three types of CBSA revision
1. A measure that changes the duty outcome
A customs notice can announce a new surtax or preferential tariff treatment. These changes generally require a review of affected tariff items, origin records, rate calculations and CARM accounting procedures.
For example, the United States Surtax Order (2026) applies surtaxes of 15%, 25% or 50% to listed U.S.-origin goods, effective September 8, 2026. The surtax is based on value for duty unless an exemption or remission provision applies. The CBSA notice states that the measure can affect covered goods routed through another country before entering Canada, so the shipping route alone does not resolve the origin question. CBSA Customs Notice 26-23
A separate change added the United Kingdom, Channel Islands and Isle of Man to the Customs Tariff treatment for the Comprehensive and Progressive United Kingdom Tariff. Eligible goods received the applicable preferential rates from September 1, 2026, subject to the relevant origin and documentation requirements. CBSA Customs Notice 26-22
These are tariff-treatment changes. They call for a rate and origin review, not merely an update to an internal memo library.
2. A revision that changes or confirms the evidence expected
Other revisions may not create a new duty but can affect how an importer supports its declaration during a verification. D11-6-8 was revised on September 9, 2026, for CARM Release 3. It covers CBSA verifications of non-free-trade-agreement origin, tariff classification and value for duty, and reflects the use of the Commercial Accounting Declaration rather than the former B3-3 and B2 forms. D-Memorandum D11-6-8
For a commercial importer, the operational implication is a records review. The business may wish to confirm that its verification files, accounting records and adjustment procedures use current CAD and CARM terminology, while still retaining the commercial evidence supporting origin, classification and value for duty. The revision concerns the verification framework; it does not, on the information reviewed, create a general new tariff rate.
D10-15-15 is another example. Revised August 14, 2026, it consolidates earlier vehicle-parts guidance and covers tariff items 9958.00.00 and 9959.00.00, including parts, accessories and articles used in manufacturing certain vehicles. Importers claiming the relevant conditional-duty-relief provisions should be prepared to provide supporting documents such as contracts or letters of understanding when requested. D-Memorandum D10-15-15
That is not the same as a new automotive duty. It is a stronger signal to connect the tariff claim to production-use evidence and commercial documentation. This is particularly relevant to Ontario automotive suppliers and importers moving parts through Toronto-area distribution operations.
3. A clarification of an existing process
CBSA’s August 21, 2026 notice concerning tariff-rate-quota goods in customs bonded warehouses expressly states that it is not a policy change. Goods entered at the within-access rate still require a valid, shipment-specific import permit from Global Affairs Canada. CBSA Customs Notice 26-20
The distinction matters for importers using bonded warehousing in Peel Region or elsewhere in the GTA. A clarification may require the broker, warehouse operator and importer to align their process, but it does not necessarily change the tariff policy or create a new general permit requirement. The relevant question is whether the shipment already falls within the existing TRQ and permit rules.
What the recent D-Memoranda cover
Energy-using products
D19-6-3 was revised July 24, 2026, to reflect changes following Amendment 18 to the Energy Efficiency Regulations. The memorandum updates regulated-product information and confirms data requirements submitted through the Single Window Initiative’s Integrated Import Declaration. D-Memorandum D19-6-3
Importers of regulated appliances, equipment and other energy-using products should therefore review product data ownership. The customs team may be able to submit the declaration, but the importer or product compliance team generally remains the source of the technical information used to support it. A tariff-classification review alone may not identify missing SWI or IID data.
Vehicles and vehicle parts
D19-12-1 was revised September 2, 2026, primarily to update the definition of temporary residents. It also reiterates operational requirements for commercial and personal vehicle imports, including Registrar of Imported Vehicles processes, documentation and age-exempt vehicles. D-Memorandum D19-12-1
Vehicle dealers, brokers and businesses importing vehicles for resale or commercial use should separate the definition update from the operational requirements. A Toronto-based importer, for example, may need to confirm whether the importer category and vehicle documentation fit the transaction before arranging release. The fact that a vehicle is entering through Ontario does not replace the applicable import process.
Battery-related tariff descriptions
Customs Notice 26-21 amended the description for tariff item 8507.60.20 effective August 6, 2026. The wording changed from “electrically-powered motorcycles” to “motorcycles or cycles with an electric motor.” The notice concerns the tariff description; it is not described as a general new duty rate. CBSA Customs Notice 26-21
Importers of batteries, e-bikes, electric motorcycles and related products should compare their classification records with the amended wording. The appropriate response is a targeted classification review for affected goods, not an assumption that every lithium-ion battery shipment has changed treatment.
A practical review sequence for import teams
- Identify the change type. Label the notice as a tariff measure, documentation or data revision, operational clarification, or administrative terminology update.
- Confirm the date. Record whether the notice gives an effective date or only a publication or revision date. D11-6-8 was revised September 9, 2026, while D19-6-3 was revised July 24, 2026, with no separate future effective date stated in the memorandum.
- Map the affected transactions. Use tariff item, origin, product category, importer program and warehouse status to identify which purchase orders and entries are actually in scope.
- Assign evidence ownership. Origin records may sit with procurement, technical product data with engineering or compliance, and contracts or manufacturing-use evidence with the automotive or operations team.
- Ask the broker a focused question. Discuss whether the change requires an entry adjustment, a classification or origin review, a new declaration data element, a permit check, or only an update to internal terminology.
This approach also helps prevent a common error: applying a broad operational change to products or shipments that are outside the notice’s stated scope. For GTA importers moving freight through Pearson, road corridors or local distribution facilities, the transport location may affect coordination, but the legal result generally turns on the goods, origin, tariff item, documentation and applicable program.
Questions to raise with the customs broker
- Does the notice affect the tariff treatment, or only the supporting record and accounting process?
- Which tariff items, origins, product categories or importer programs are actually in scope?
- For entries already accounted for, is an adjustment or post-accounting review appropriate?
- Which records should be assembled now for a potential verification?
- Does a warehouse, permit, SWI/IID, RIV or conditional-duty-relief process require coordination with another party?
Recent CBSA revisions are best handled as specific control changes rather than one broad “customs update.” Separating new duty measures from evidence requirements and policy clarifications gives importers a more reliable basis for deciding what to change, what to document and what to leave unchanged.