The Full Section 338 Product List: Every Canadian Import Category Hit by the 50% Tariff on August 19

The Full Section 338 Product List: Every Canadian Import Category Hit by the 50% Tariff on August 19

Three days from now, at 12:01 a.m. Eastern on August 19, 2026, the 50% Section 338 duty on Canadian goods goes live. If your compliance check started and ended with the three headline categories — motor vehicles, alcoholic beverages, and dairy — there is a meaningful chance you have not found your actual exposure yet. Each of the three July 20 proclamations carries an Annex II that extends the same 50% duty to a much longer list of products that received almost no press coverage: wine, plywood, cement, furniture, clothing, seeds, fishing rods, hockey sticks, swimming pools, even wigs.

The U.S. Trade Representative's office puts total covered trade at nearly $20 billion — about 5.2% of the $382 billion in goods the U.S. imported from Canada in 2025, spread across hundreds of eight-digit HTS lines. This piece is the working checklist: what is actually on the list, the three traps that catch importers who skimmed the proclamations, and the moves still available in the final 72 hours. For the background on the action itself, start with our full Section 338 breakdown; for freight already on the road or rail, see the options for Canadian freight arriving after August 19.

The Headline Three — Why These Categories

Each named category ties to a documented dispute, which is why each got its own proclamation:

Motor vehicles. Canadian motor vehicle exports to the U.S. fell about 22% — from $25.9 billion to $20.3 billion — over the year ending March 2026, and the administration frames the action as offsetting Canadian discrimination against U.S. automotive commerce.

Alcoholic beverages. After most Canadian provinces pulled American liquor from their shelves, Canadian imports of U.S. alcoholic beverages dropped roughly 81%, from $718 million to $137 million. The response covers Canadian beer, spirits — and, via the annex, wine.

Dairy. The oldest of the three disputes, rooted in Canada's tariff-rate quota administration for U.S. dairy exports. The annex covers the full range: milk, cream, butter, cheese, and downstream dairy preparations.

The Annex II List — What the Headlines Missed

Beyond the named categories, the annexes sweep in product families that have nothing to do with cars, liquor, or milk. If you import any of the following from Canada, pull the actual annexes and check your ten-digit lines this week:

Building materials: cement, plywood and engineered wood panels — a direct hit on construction supply chains that treat Canadian softwood-adjacent products as domestic-equivalent.

Furniture: one of the largest dollar categories on the list, and the classic blind spot — a furniture importer has no reason to follow a "dairy tariff" story.

Apparel and textiles: clothing lines appear across the annexes, USMCA origin notwithstanding.

Agriculture inputs: seeds — planting stock that crosses the border in volume every season.

Consumer and sporting goods: hockey sticks, fishing rods, swimming pools, wigs. The eclecticism is the point: the annexes were assembled for negotiating leverage, not category coherence.

The proclamations also left CBP room to keep adjusting: Federal Register annex modifications and HTSUS technical corrections are still landing, so a product that was off the list in July is worth re-checking now. Importers screening a large SKU book against the annex HTS lines typically do it in software rather than by hand — classification and landed-cost platforms such as Zonos can flag covered lines across a whole catalog before your broker files. (Disclosure: this is an affiliate link — FreightFigures may earn a commission if you sign up, at no additional cost to you. See our affiliate disclosure.)

The Three Traps

Trap one: USMCA origin does not exempt you. This is the single most expensive misunderstanding in circulation. A valid USMCA certificate of origin means nothing here — covered goods owe the 50% whether or not they qualify as USMCA-originating. Every earlier Canada action trained importers to treat the certificate as a shield; Section 338 breaks that pattern deliberately.

Trap two: the duty stacks. The 50% applies *in addition to* the base MFN rate and any other duties, taxes, and fees already owed on the line — not in place of them. Run your covered lines through the tariff stacking calculator to see the all-in rate; our 2026 stacking guide covers the order of operations.

Trap three: the FTZ window is closing. Goods sitting in a foreign-trade zone generally need to be admitted in privileged foreign status before August 19 or they inherit the new duty when entered for consumption. If you have covered goods in a zone under non-privileged status, that conversation with your FTZ operator needs to happen Monday, not Wednesday.

The 72-Hour Checklist

1. Screen every Canadian-origin SKU against the annexes — all three proclamations, both annexes each, at the ten-digit level. Do not rely on category headlines. 2. Entries that can clear before 12:01 a.m. Eastern August 19 should clear. The duty applies to goods entered for consumption, or withdrawn from a bonded warehouse for consumption, on or after the effective date. An entry accepted August 18 owes the old rate. 3. For covered freight that cannot beat the deadline, decide: enter at 50%, or go into bond. A bonded warehouse does not make the 50% disappear — duty is assessed at the withdrawal-date rate, so covered goods withdrawn August 19 or later owe it either way. What bond buys you is optionality: no duty outlay while the goods sit, duty-free re-export if the 50% kills your U.S. sale economics, and — because Washington and Ottawa are actively negotiating and the 50% is widely read as an opening position in the USMCA review — full benefit of any negotiated rate reduction on the day you withdraw. Model the carrying-cost math in the duty deferral calculator. 4. Re-check the annexes weekly. CBP guidance and annex modifications are still settling. A clean screen today is not a clean screen in October.

Why This Authority Is Different

Section 338 comes from the original 1930 Smoot-Hawley Tariff Act and had never been used in its 96-year history until July 20. Unlike Section 301 (which requires a USTR investigation) or Section 232 (which requires a national-security finding), Section 338 lets the president act by proclamation alone. After the Supreme Court's February ruling struck down the IEEPA tariff program, that procedural simplicity is exactly the appeal — which means the annex model you are screening against this week is likely the template for future actions against other trading partners. Legal challenges at the Court of International Trade are anticipated, but nobody should plan August around them.

If Your Product Is on the List

For importers bringing covered Canadian goods through Southeast ports, the bonded-warehouse route is the one lever that preserves every future option — deferral, re-export, and any negotiated relief — while the trade dispute plays out. That is exactly the scenario a CBP-bonded facility near the port handles every day.

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