October 2026 produced three Canadian customs developments with different compliance consequences. The new substantive importer-facing requirement is additional country-of-smelt and country-of-cast reporting for aluminum covered by General Import Permit No. 83, effective October 1. The other two developments are a revision to U.S. surtax guidance published October 23 and an administrative update to energy-efficiency import procedures published October 15. For importers in Toronto, Mississauga and Brampton, the practical issue is separating the date a rule applies from the date a memorandum was revised.
Three publication dates, three different actions
The CBSA updated Memorandum D19-10-2 on October 22, 2026, but the underlying GIP 83 reporting requirements took effect on October 1. Importers should therefore treat the October 22 publication as a confirmation and documentation point, not as the start date of the obligation. The updated memorandum describes the information and reporting process for aluminum products covered by item 83 of the Import Control List.
Customs Notice 26-23 was revised on October 23. That revision clarifies the administration and accounting treatment of the United States Surtax Order (2026), but the surtax itself took effect on September 8. The October notice is therefore a guidance and accounting-control update rather than a new October surtax commencement.
Memorandum D19-6-3 was updated on October 15 after responsibility for the Energy Efficiency Regulations moved from Natural Resources Canada to Environment and Climate Change Canada on July 30. The memorandum does not identify a separate new October 15 import obligation. It confirms that existing reporting procedures remain relevant while system changes are completed.
The one new importer-facing requirement
Importers using GIP 83 for covered aluminum products are generally required to provide additional origin information at importation. For goods containing primary aluminum, the information includes the country of largest smelt and, where applicable, the country of second-largest smelt. For all goods covered by GIP 83, the country of most recent cast is also relevant.
Where applicable, the data is reported through the Customs Single Window and Integrated Import Declaration process. The GIP 83 authorization must also be cited in customs accounting documentation. The CBSA memorandum identifies new IID data codes for the information.
Importers and brokers handling these products should assess the data before the shipment reaches release. A useful control is to identify the party responsible for obtaining smelt and cast information, the document or supplier record supporting it, and the party responsible for transmitting the applicable IID data. The memorandum also identifies exceptions, including certain CSA clearances and qualifying low-value circumstances, so the release method and shipment facts should be checked before treating every GIP 83 shipment identically.
What the U.S. surtax revision changes operationally
The October 23 revision to Customs Notice 26-23 addresses the administration of 15%, 25% or 50% surtax rates for listed U.S.-origin goods. It also addresses qualifying commercial and casual imports, Chapter 98 and Chapter 99 goods, CARM/CAD surtax codes, proof of origin, documentation and goods already in transit when the surtax came into force.
For importers using CARM, EDI or API accounting, the immediate task is to compare the revised guidance with existing accounting rules and origin documentation. Importers relying on remission, duties relief, duty drawback or in-transit exceptions generally need to confirm that the relevant treatment is supported in their records. The revision does not, on its own, create a new September or October effective date for the surtax.
What remains stable for energy-using products
Commercial importers of regulated energy-using products generally continue to submit the required import data through the Integrated Import Declaration process. The memorandum identifies information including product name, model number, brand, dealer address and import purpose. Products covered can include appliances, HVAC equipment, motors, lighting products, transformers and related equipment.
Until system changes are completed, importers should continue using the existing NRCan-linked submission settings. The updated memorandum changes the responsible federal department’s reference from Natural Resources Canada to Environment and Climate Change Canada, but the research reviewed here does not identify a new October 15 reporting obligation.
A date-control checklist for GTA import teams
- Aluminum: confirm whether the goods fall under GIP 83, collect the applicable smelt and cast information, cite the authorization in accounting documentation and validate any exception.
- U.S.-origin goods: review the October 23 guidance revision against surtax codes, origin records, in-transit files and any relief or drawback process.
- Energy-using products: retain the current submission settings while checking that the product and importer data required for IID is available.
- Release planning: distinguish the effective date of the rule from the date a CBSA notice or memorandum was published.
This distinction matters whether a shipment is released through Pearson, another Ontario commercial port or a GTA distribution operation. A shipment entering a Mississauga, Brampton or Toronto supply chain is not subject to a different national rule merely because its destination is in the Greater Toronto Area; the relevant trigger is the goods, origin, permit, release method and accounting treatment.
Bottom line
October’s developments should not be placed in one undifferentiated “new rules” queue. The aluminum reporting requirement has an October 1 effective date. The U.S. item is a later clarification of a surtax that began on September 8. The energy-efficiency update is primarily a responsibility and system-reference change. Importers who map each development to its actual effective date are less likely to apply a new control too late—or rebuild a process that the updated guidance did not change.