For businesses purchasing affected Canadian goods, the September 29 deadline has passed. The immediate question is whether the next shipment can enter the United States—and what happens to customer commitments if it cannot.
Our September 15 article explained the scheduled transition from additional tariffs to import prohibitions for specified products. New guidance from U.S. Customs and Border Protection now provides practical details businesses need to review.
Confirm the product before committing to delivery
The September 8 presidential proclamations established September 29 as the effective date for excluding specified Canadian products identified in their annexes. Their titles refer to alcoholic beverages, dairy, and motor vehicles, but the actual coverage depends on the listed tariff classifications and product descriptions. Businesses should avoid treating those broad categories as a complete description of what is prohibited.
That makes product verification the first business decision.
Before accepting another order or promising a delivery date, confirm with your customs broker the specific merchandise, its classification, and the applicable restriction. A supplier’s assurance that it has shipped similar products before does not answer whether the next shipment is eligible.
CBP has clarified how the restrictions operate
In its September 28 bulletin, CBP says the exclusion applies to covered products imported beginning at 12:01 a.m. Eastern on September 29, 2026. It also prevents admission into a foreign-trade zone or bonded warehouse, in-bond transportation, and entry for consumption.
Timing matters for earlier shipments. CBP says covered products imported before the cutoff remain eligible for entry for consumption. Qualifying goods already in a bonded warehouse or foreign-trade zone before the restriction may be withdrawn for consumption subject to the applicable 50% additional duty.
Alcohol requires particular attention. Where an annex specifies “Packaged,” CBP identifies bottles, cans, boxes, kegs, and similar containers intended for direct consumption. Products outside an applicable scope limitation are not subject to that exclusion, but remain subject to the applicable additional duty.
An order date alone therefore provides little reassurance. Businesses need to establish the shipment’s actual import status and how the particular goods are treated.
Review the customer commitments behind the shipment
The customs question is only the beginning of the operating review.
A distributor may have promised delivery to several customers. A retailer may have planned a promotion around incoming stock. A manufacturer may be relying on a supplier without knowing whether an affected product is involved.
The useful questions are specific:
Which open orders depend on merchandise whose eligibility remains uncertain?
How much available inventory can support existing commitments?
What replacement suppliers can deliver, and on what terms?
Which customers need revised delivery dates or product alternatives?
What happens to margin and cash requirements if replacement goods cost more?
These are potential business consequences, not a prediction that every company purchasing from Canada will experience a shortage.
Price the alternative before making the switch
Finding another supplier may solve an availability problem while creating a financial one.
Compare the full replacement cost: purchase price, freight, deposits, lead time, minimum order quantity, and any changes needed to use or sell the product. Then check whether existing customer pricing can support it.
I would also separate confirmed supply from expected supply in the cash forecast. Money committed to a replacement order may leave the business well before the original customer payment arrives.
That is where a trade restriction becomes a management decision. The owner needs to know which commitments can be fulfilled profitably, which require renegotiation, and which should wait for clearer information.
What to do now
Start with product-level confirmation from your customs broker. Then connect that answer to inventory, open orders, customer promises, and cash.
For affected goods, continuing to use the old delivery and cost assumptions can leave the business making commitments it cannot support.
If a supplier disruption is forcing decisions about pricing, working capital, or customer commitments, I work with owners to assess the business consequences and determine the next step. Request a conversation.
Primary source: CBP Cargo Systems Messaging Service bulletin #70050970, September 28, 2026, including links to the proclamations and product annexes.