Tariff relief can sound substantial until the fine print shows one Canadian product leaving a 50% duty list while another is added. On October 23, President Donald Trump changed the scope of the United States’ Section 338 tariffs on Canadian goods, with the revisions taking effect October 30. Selected plywood, packaging materials, refrigeration equipment, machinery and seaweed products are coming off the list, while other goods—including carpets, paints, shampoos and some air-conditioning equipment—are being added.
That is why the change looks more like a reshuffle than a retreat. For individual companies that win an exemption, the savings can be significant. Across the Canadian export economy, however, the 50% tariff framework remains in place, CUSMA-compliant goods are not automatically protected, and some products can still face overlapping trade measures. The immediate relief is real for a narrow group; the uncertainty is much broader.
A Tariff Reshuffle, Not a Broad Retreat
The October 23 order does not lower the headline Section 338 tariff rate. Instead, it redraws the list of products exposed to the 50% additional duty. The White House removed categories including certain plywood, paper and packaging products, refrigeration equipment and machinery. At the same time, it expanded coverage to other Canadian goods. For exporters, that distinction matters: a company whose tariff classification disappeared from the list may suddenly regain workable margins, while a business newly included can face the opposite shock only days later.
The result is a policy that redistributes pain rather than broadly reducing it. Washington described the revisions as adjustments based on U.S. interests and changing economic conditions. Canadian business groups responded by parsing tariff codes product by product, because the commercial impact depends on the exact classification attached to a shipment. That is hardly the kind of certainty exporters normally associate with a trade agreement. The change may rescue particular orders, but it does not restore a stable set of rules for the wider market.
The Exemptions Solve Specific U.S. Problems
Several of the newly exempted categories line up closely with supply problems faced by American industries. Senator Susan Collins of Maine said nine categories were removed after discussions with U.S. trade and commerce officials, including corrugated paper boxes, plastic crates, refrigeration equipment, agricultural sorting machinery, packaging machinery and edible seaweed. One particularly tangible example involves Maine blueberry growers, who rely on specialized Canadian harvest boxes after a domestic supplier stopped producing the cardboard totes they had used.
That makes the exemption meaningful on both sides of the border, but it also helps explain why Canadian trade watchers are cautious about calling it a general concession. The change arrived days before the November 3 U.S. midterm elections, with Collins in a closely watched reelection race and tariff costs a visible issue in border states. Relief was targeted toward products causing pressure inside the United States. For a Canadian supplier selling one of those products, that is welcome. For thousands of exporters outside those categories, nothing fundamental has changed.
The Most Important Trade-Deal Protection Still Is Not Back
For years, CUSMA compliance was the central playbook for Canadian companies seeking predictable access to the U.S. market. The agreement remains enormously important: Canadian government guidance says more than 98% of tariff lines and more than 99.9% of bilateral trade may qualify for preferential treatment when goods meet the agreement’s rules of origin. The Section 338 tariffs break from that familiar logic. Goods covered by the measure do not receive an exemption simply because they qualify as CUSMA-originating products.
That difference is one of the strongest reasons the latest product exemptions provide only limited comfort. A manufacturer can document North American content, maintain certification and satisfy the trade agreement’s origin rules, yet still face the additional Section 338 duty if its product appears on the U.S. list. Congressional researchers have noted that the administration’s use of Section 338 is historically unusual, adding another layer of legal and commercial uncertainty. For exporters accustomed to planning around a rules-based continental market, compliance is no longer the same thing as protection.
Stacked Duties Keep the Cost Pressure High
The cost problem becomes more complicated when Section 338 interacts with other U.S. trade measures. Since September, U.S. guidance has allowed the 50% Section 338 duty to apply in addition to Section 232 tariffs where both measures cover the same merchandise. That means the relevant question for a Canadian exporter is not simply whether a product is on one tariff list. Companies and customs brokers must determine its classification, origin, material content and exposure to multiple authorities before they can know the true landed cost.
The administrative burden is significant even before the bill arrives. U.S. Customs and Border Protection added 122 tariff classifications to the Section 338 framework in a September update, and the October proclamation changed the product mix again. A small error in classification can affect pricing, customer contracts and whether an order remains profitable. Large multinationals can spread compliance work across legal, tax and logistics teams. Smaller manufacturers often cannot. For them, every new proclamation can mean another round of calls to brokers, customers and suppliers before the next truck crosses the border.
Small Exporters Have Little Room to Absorb Another Shock
The strain is already visible in small-business data. In a final survey of 2,294 members conducted in late August and early September, the Canadian Federation of Independent Business found that 43% of exporters said they were directly affected by the trade conflict. Among affected firms, the median additional monthly cost was about C$80,000. Even more striking, 19% of affected exporters said they expected they could become financially unviable within three months if conditions did not improve.
Those figures help explain why a narrow exemption list can feel disconnected from day-to-day business decisions. CFIB found that 42% of affected companies were absorbing most tariff-related costs themselves, while 39% were passing most of the increase to customers. Neither response is painless. Absorbing the cost squeezes margins and cash flow; passing it through risks losing orders. A manufacturer that has spent years building a U.S. customer base may be reluctant to walk away, even when each shipment becomes less attractive. Select exemptions can help some firms, but they do not solve that broader margin problem.
Strong August Trade Numbers May Be Misleading
Recent trade numbers can make the Canadian export sector look more resilient than the tariff headlines suggest. In August, Canadian merchandise exports to the United States jumped 8.1%, while the goods trade surplus with the U.S. widened to C$11.2 billion. Industrial machinery and electronic equipment were among the categories showing notable gains. On the surface, that might look like evidence that exporters were quickly adapting to the new tariff environment.
Officials warned against that interpretation. Statistics Canada and Global Affairs Canada both pointed to the possibility that U.S. buyers accelerated purchases before new Section 338 duties took effect, effectively pulling future shipments forward. Exports to non-U.S. markets fell during the month, reinforcing the uneven picture. Front-loading is common when companies know a border cost is about to rise: a buyer would rather receive inventory before a 50% duty applies than after. That can temporarily lift trade data without improving underlying demand. The stronger August figures therefore do not erase the risk facing exporters once the tariff schedule fully bites.
The Broader Economic Drag Is Still Building
The broader economic estimates also show why tariff relief is being judged on more than the fate of a few product codes. The Parliamentary Budget Officer calculated that trade actions introduced since June lifted the trade-weighted average effective U.S. tariff rate on Canadian imports from 5.3% to 7.7%. If the current Canada-U.S. measures are treated as permanent, the PBO estimates Canadian real GDP could be about 1.4% below its pre-tariff baseline after five years, with employment losses reaching as much as 185,000 jobs at the peak.
Those are scenario estimates, not a forecast that every loss will occur. Companies can adjust supply chains, redirect sales and postpone or relocate investment, and governments can still change policy. But the Bank of Canada’s October business survey found that sentiment weakened after bilateral trade talks broke down in August, with firms reporting softer export expectations and greater concern about tariffs. The message from both sets of evidence is similar: uncertainty itself has an economic cost, especially when businesses cannot confidently price a contract or plan capital spending.
A Trade Deal, Not a Product Swap, Is the Real Relief Valve
There is still a path to broader relief, but it would likely require a political agreement rather than another round of product-by-product edits. At a Michigan rally on October 25, Trump predicted that the trade dispute with Canada would be resolved “pretty soon,” although he offered no details about the terms or timing. Two days earlier, Canadian Trade Minister Dominic LeBlanc said Ottawa was assessing the latest tariff changes. The revised Section 338 schedule is still set to take effect on October 30.
That leaves exporters operating between hopeful rhetoric and enforceable customs rules. A company cannot price next quarter’s orders around a prediction; it has to use the tariff treatment that applies when goods enter the United States. Until a broader deal changes that framework, the latest exemptions are best understood as selective pressure relief. They matter greatly to the firms whose products were removed, and they may ease costs for American customers that depend on those imports. But for Canadian exporters as a whole, the bigger problem remains unresolved: access to their largest market is still subject to fast-moving tariff decisions that can change the economics of a shipment almost overnight.
