Fifty percent on $20B of Canadian goods: 17 days to re-source lumber, steel and appliances

Seventeen days is what a buyer actually has: August 22 to September 8 ^[18]. The account, published by cryptobriefing.com under a "Via cfr.org" credit line, calls it a two-week window in which negotiations could theoretically resume ^[15][23]. For anyone holding an open purchase order, the difference is one more weekend of freight.

The compounding matters more than the headline rate. Per the same source, vehicles cross the border several times during assembly, so the 50% duty lands on every component at every crossing rather than once on a finished car ^[9]. Steel is hit twice by design: southbound under the US measure, northbound under Canada's ^[10]. A fabricator with plants on both sides pays on the same tonne more than once, which an appliance importer does not.

Then the scale. Twenty billion dollars spread across more than 500 categories averages under $40m per category ^[21]. That is the number procurement should sit with, because it means most affected lines are small, the work of qualifying an alternative mill or vendor has to be repeated hundreds of times, and the list of categories that justify a dedicated re-sourcing project is short. At 50%, the annualised duty bill on $20bn is roughly $10bn if volumes hold ^[20], and the tariff exists precisely so they do not.

Against nearly $900bn in annual two-way goods and services trade, $20bn is about 2.2% ^[22]. Against Canadian exports to the US alone, the source puts it at roughly 5%, which implies a base near $400bn ^[3][19]. Modest share, concentrated incidence.

The argument against signing a three-year replacement contract this month is in the same article. In February 2026 the Supreme Court invalidated some earlier tariff measures ^[12], and whether the current 50% duties survive comparable scrutiny is described as an open question ^[13]. A supplier switch priced off a 50% duty turns into a stranded cost the day the duty is voided. That favours short-dated cover, meaning surcharges and spot buys, or contracts with tariff reopener clauses, over re-tooling a network.

Two caveats on the material. It is a single account, carried by a crypto outlet crediting another site ^[23]. And it never states the year of the August 22 effective date while placing both the February 2026 ruling and disputes "throughout 2025 and into 2026" before the current escalation, which puts the tariff after February 2026 ^[24][25]. Verify the effective date against the tariff schedule before you re-price anything.

Mark Carney's characterisation, as reported, was that Washington asked too much and offered too little ^[7]. That is a judgement about the counterparty rather than about specific terms, which is the language of a negotiation with no landing zone inside a fortnight.