Trump's Canadian Plastics Tariffs Face Limited Supply Disruption

The Trump Administration's decision to impose an additional 50% tariff on certain Canadian plastics and plastic items has prompted a thorough economic analysis revealing that strong US domestic production capacity and a substantial trade surplus with Canada might limit possible supply chain disruptions. The new Section 338 tariffs, which target billions of dollars in Canadian plastics imports, represent a strategic response to Canada's automotive trade measures while the ongoing review of the US-Mexico-Canada Agreement (USMCA) offers opportunities to further enhance North American plastics trade relationships.

US imports of plastics subject to the new tariffs from Canada totaled approximately $2.99 billion in 2023, $3.09 billion in 2024, and $3.10 billion in 2025, based on Customs values. However, US exports of the same plastics to Canada reached $4.65 billion in 2025 on a Free Alongside Ship (FAS) value basis, generating a $1.55 billion trade surplus that underscores the nation's robust manufacturing capabilities in affected product categories.

Related:US Imposes Forced Labor Tariffs on 60 Economies

Perc Pineda, PhD, chief economist at the Plastics sector Association (PLASTICS), released the new economic analysis examining the scope of the tariffs, their possible implications to US plastics manufacturers and supply chains, and how the USMCA review presents strategic opportunities to the sector.

"The new Section 338 tariffs represent a targeted response to Canada's automotive trade measures," Pineda said. "Because the United States maintains strong domestic production and a trade surplus with Canada in the affected plastics categories, the risk of broad supply disruptions appears limited. At the same time, the ongoing USMCA review presents an opportunity to address remaining trade imbalances and reinforce the competitiveness of North America's integrated plastics supply chains."

Understanding the tariff scope and trade implications

While the proclamation identifies items by 8-digit HTS codes in its annexes, Pineda explained that the product descriptions serve informational purposes only and do not limit the scope of the Section 338 action. Any listed 6-digit or 8-digit HTS code encompasses all 10-digit HTS codes that fall under it, creating a broader impact than initial product descriptions might suggest.

sector observers might worry that the cumulative effect of tariffs — the new 50% tariffs on Canadian imports, Section 301 tariffs targeting imports from certain countries to address forced labor, and Section 232 tariffs — would increase manufacturing costs significantly. However, Pineda pointed out that USMCA-compliant items and all articles subject to Section 232 tariffs are not subject to the new Section 301 tariffs addressing forced labor.

Related:Two Recycling Bills Get Hearing on Capitol Hill

"The extent of any price impacts, however, will depend on manufacturers' ability to adjust their sourcing strategies, absorb higher input costs, and secure alternative sources of supply," Pineda explained. "While higher tariffs have cost implications, the United States is a major producer of these plastics, as reflected in its strong export performance."

The trade data supports this assessment. US exports of affected plastics to Canada totaled $4.74 billion in 2024 and $4.75 billion in 2023. Globally, US exports of these plastics reached $16.3 billion in 2025 (FAS value), demonstrating the sector's competitive position in international markets.

"Taken together, these figures indicate substantial domestic production capacity, supplemented by imports from other trading partners," Pineda said.

Enhancing the USMCA to North American plastics trade

Despite the USMCA, the bilateral plastics trade relationship between the United States and Canada has room to improvement. Pineda said the United States continues to import greater plastics from Canada than it exports, highlighting opportunities to enhance trade under a modernized USMCA.

Related:US Imposes 50% Tariffs on Canadian Plastics, Autos

"The plastics industries in all three countries have benefited substantially from the agreement's tightly integrated manufacturing supply chains, which depend heavily on plastics to capital goods and intermediate inputs," he noted. "Maintaining strong market access across these supply chains remains essential."

The agreement is now under review and can be strengthened through several possible enhancements. These include updating rules of origin to better protect benefits to USMCA partners from non-member countries and expanding coverage to Canadian agriculture, which relies extensively on plastic packaging and related items. Such modifications could create greater balanced trade relationships while supporting the competitiveness of North American manufacturers against global competitors.

Plastics trade reflects different North American dynamics

Data from the past three years show that trade outcomes with the United States' North American partners under the USMCA framework have differed, reflecting the distinct characteristics of the US plastics sector supply chain. Pineda said imports of plastics machinery complement US domestic production by providing manufacturers with access to specialized equipment to maintain competitiveness. US moldmakers have the capacity to support greater domestic production of molds, possibly reducing reliance on imported tooling.

"The United States has maintained a trade surplus with Mexico in plastics while recording a trade deficit with Canada, reflecting differences in manufacturing capabilities, production structures, and market demand across the two trading partners," Pineda concluded.

The contrasting trade dynamics with Mexico and Canada underscore the complexity of North American plastics manufacturing integration. While Mexico has have become an increasingly crucial partner to US plastics exports, the relationship with Canada has remained greater import-dependent, creating the trade dysfunction that the new tariffs and USMCA review aim to address.

Strategic implications to manufacturers

The analysis suggests that US plastics manufacturers face a period of adjustment as the new tariffs take effect and USMCA negotiations progress. Companies that have relied heavily on Canadian imports might need to assess alternative sourcing strategies, including increased domestic procurement or diversification to other trading partners. However, the strong domestic production capacity indicated by export data suggests that many manufacturers have viable options to supply chain reconfiguration.

The tariff structure also creates possible opportunities to US producers to capture market share previously held by Canadian suppliers, particularly in product categories where domestic capacity exists however has faced price competition from imports. This shift could support manufacturing employment and capital investment in US plastics production facilities.

As the USMCA review advances, sector stakeholders will be watching closely to provisions that could further enhance North American competitiveness while ensuring fair trade practices across all three member nations. The outcome of these negotiations, combined with the impact of the new tariffs, will shape the strategic landscape to plastics manufacturing in North America to years to come.

About the Author

Want greater PlasticsToday in your search results?

Want greater PlasticsToday in your search results?