50% on $20B of Canadian goods: a $10B-a-year duty bill, and no deal to wait for

Start with the arithmetic. Fifty percent applied to roughly $20 billion of covered Canadian exports ^[2] is on the order of $10 billion a year in duty if the same volume keeps crossing ^[12]. Nobody will collect all of it, because 50% is not a rate a purchasing department absorbs; it is a rate that moves a supplier. The collected figure will come in under $10 billion, and the value of contracts being rewritten to get there will sit well above it.

Ottawa's answer is the harder thing to plan against, because a dollar-for-dollar pledge ^[3] fixes a total and not a list. Mirror the US rate at 50% and roughly $20 billion of US exports get named, about $10 billion is collected on each side, and the two governments have put close to $20 billion of annual duty on one border ^[14]. Reach the same $10 billion of burden with a 25% rate instead and the list has to stretch to something like $40 billion of US goods ^[13] - twice as many American sellers discovering they are the instrument. Until that list is published, a US exporter into Canada cannot price its own risk, and a Canadian exporter cannot tell whether relief is coming through symmetry or escalation.

The mismatch inside the US action is the part worth sitting with. The negotiations were about steel, aluminum and automotive tariffs ^[6]. The goods that got taxed include hockey equipment and building materials ^[2]. A sectoral settlement on autos and metals, if one ever arrives, does not automatically clear duties on categories that were never the subject of the talks. Meanwhile the named exposure runs through building materials, metals and sporting goods manufacturing, with Canadian steel and aluminum producers facing margin compression if they eat part of the duty to stay competitive, according to the account of the collapse published by cryptobriefing.com ^[10][15]. Those are inputs. They arrive inside someone else's bill of materials, which is why the repricing does not stay inside the tariffed lines.

Washington's stated grievance is that Canada would not accept previously negotiated terms, and that measures already in place, including bans on US alcohol sales, were escalatory ^[4]. Carney's position is that US proposals were altered late in ways that made a reliable agreement unlikely ^[1]. Both readings can be true at once, and neither points to a fast reconciliation: he was elected in 2025 on an explicit platform against US trade coercion ^[9], which prices in the political cost of the concession that would end this quickly.

The broader piece of collateral is the trilateral framework that replaced NAFTA, which now has two of its three members taxing each other outside it ^[8]. If you buy or sell across that border, the operative assumption for this quarter is not that a deal restores the old landed cost. It is that the landed cost you have is the one you will be quoting from, and that any sourcing alternative you have not yet qualified is a month or more of work you have not started.