The 10% Canada duty is live.

But it is not a 10% tax on every truck crossing the border.

For a covered Canadian good, the question is whether the actual U.S. entry qualifies for duty-free treatment under USMCA.

On July 23, the Office of the U.S. Trade Representative finalized a Section 301 action that puts Canada in the 10% group. The additional duty applies to covered goods entered for consumption, or withdrawn from warehouse for consumption, at or after 12:01 a.m. Eastern on July 24, 2026. The notice also provides a narrow timing exception for goods loaded onto a vessel and in transit on the final mode before that cutoff, if they are entered by 12:01 a.m. Eastern on July 28. Most important for this beat, the same notice says Canadian products entered free of duty under USMCA are not subject to this additional duty. The fast question is no longer “do we buy from Canada?” It is “can the importer prove this exact item qualifies for duty-free USMCA entry?”

That is the detail a fast supplier email will miss. A Canadian brand is not a customs classification. A Canadian seller can be shipping an item whose origin is elsewhere, and a familiar product name can land under a different HTS line than the one someone assumed. The 10% number is real, but applying it across every Canadian input without checking the entry facts is just a more expensive kind of guesswork. The move today is verification, not panic.

This is a fresh event, not a redo of the 50% Canada list

OPS covered the 50% Canada Section 338 list on July 21. That is a separate, specific-list story with an August 19 clock and no USMCA exemption for a covered product. Today’s Section 301 action is a new July 24 deadline, and the USMCA duty-free treatment of the actual entry is the key carve-out. Do not assume the programs stack, replace one another, or reach the same goods; the published notices need to be tested against the actual HTS line, origin, and entry facts. Same border. Different question.

There are other exclusions in the Section 301 notice, including specified aluminum, steel, copper, vehicle, wood, and semiconductor categories. That is not a permission slip to mark a material “safe” because it sounds like steel, copper, or wood. The lists turn on tariff treatment and definitions, not on a product nickname in a purchase order. If an item matters to a live job, have the importer or customs broker tie it to the actual classification before anyone promises a price.

The job will not lose money in a headline. It will lose money in the gap between a rushed quote and an untested import claim.

What changes for a trades business today

If you buy through a U.S. distributor, source directly from Canada, or sell across the border, start with open estimates and purchase orders—not a generic surcharge. Ask the supplier or importer for the SKU, country of origin, HTS classification used at entry, importer of record, expected entry date, and whether the item is being entered free of duty under USMCA. Put the response next to the material line in the quote. If the supplier cannot supply those facts, they have not proved a 10% exposure. They have identified a risk that needs a broker check.

The July 24 trigger is an entry-date rule, not a quote-date rule. Goods that meet the notice’s narrow in-transit condition may have a short exception window, but it is not a generic “it was already moving” escape hatch. A broker needs to test whether the shipment meets every part of that condition and whether any other tariff treatment applies. This is customs and trade work, not a spreadsheet trick. For a material exposure large enough to change a bid, verify with your customs broker or trade counsel before you pass a number to a client.

The 48-hour field manual

  1. Build an exception list. Pull every open U.S. quote, purchase order, and recurring buy with a possible Canada-origin input. Start with the jobs that have thin material margin or a committed customer price.
  2. Demand the six facts. Get the SKU, country of origin, HTS code, importer of record, expected entry date, and the basis for USMCA duty-free treatment. “From Canada” is not enough.
  3. Separate current inventory from future entries. Identify what is already domestic, what has a documented entry status, and what will cross after the July 24 trigger.
  4. Do not add a blanket 10% line. Use a written material-review contingency when the facts are unresolved. Reprice a specific line only after the importer or broker validates the exposure.
  5. Keep the paper trail. Save the supplier response, broker guidance, and customer communication with the estimate. The person who can explain the change cleanly will keep more trust than the person who sends a vague tariff surcharge.

What OPS is watching next

  • High confidence: origin, HTS, and USMCA-document requests will rise immediately. The deadline is live and the exemption turns on the actual entry, so distributors and brokers will be pulled into active quote reviews.
  • Medium confidence: suppliers that can produce current origin support and a clean entry story will win cross-border orders from slower competitors. The advantage is not a lower headline; it is less uncertainty at the point of sale.
  • Watch item: broker implementation, CBP guidance, and how a specific item is treated under other tariff programs. Do not build a margin assumption on an unresolved interaction between separate actions.

Today’s opportunity is simple: turn a tariff headline into a verified material decision before it turns into a change-order fight.

Sources