Canadian Import Tariffs 2026 — USMCA Benefits, Lumber Duties & Current Rates

Canada is the second-largest US trading partner and the relationship between the two economies is deeply integrated. Under USMCA, the vast majority of Canadian goods enter the United States duty-free. But the trade landscape is not as simple as "everything is free." Softwood lumber duties, dairy tariff-rate quotas, the Section 122 surcharge, and the approaching USMCA review all create complexity for importers.

This guide covers the full picture of US tariffs on Canadian imports in 2026, including what is duty-free, what is not, and what changes are on the horizon.

USMCA and Duty-Free Trade

Canada and the United States have enjoyed preferential trade access since the original Canada-US Free Trade Agreement of 1988, which was succeeded by NAFTA in 1994 and then USMCA in 2020. Under USMCA, virtually all goods that meet the agreement's rules of origin cross the border duty-free.

The scale of this trade is enormous. In 2025, bilateral goods trade between the US and Canada exceeded $700 billion. Approximately 75% of Canadian exports go to the United States, and the two countries' supply chains are deeply intertwined, particularly in automotive, energy, and manufacturing.

The Softwood Lumber Dispute

The US-Canada softwood lumber dispute is one of the longest-running trade conflicts in the world, stretching back to the early 1980s. The core issue: the US lumber industry alleges that Canadian provinces subsidize their timber industries by charging below-market "stumpage fees" for the right to harvest timber on government-owned land.

As of 2026, Canadian softwood lumber is subject to countervailing duties (CVDs) imposed by the US Department of Commerce. The current combined anti-dumping and countervailing duty rate is approximately 8.05%, though this rate is subject to periodic administrative reviews and can change.

Key facts about the lumber dispute:

• Not resolved by USMCA: Unlike NAFTA, which attempted various lumber agreements, USMCA did not address the softwood lumber dispute. It remains governed by US trade remedy law.
• WTO rulings: Canada has won several WTO disputes over US lumber duties, but the US has continued to impose them through revised calculations
• Rate fluctuations: The CVD rate has ranged from roughly 8% to over 20% in recent years depending on the review period
• Impact on housing costs: The lumber duties are estimated to add $7,000-$10,000 to the cost of a new single-family home in the US
• Section 122 stacking: The Section 122 surcharge applies on top of the lumber CVD, potentially pushing total duties on Canadian lumber above 20%

Importers of Canadian lumber should browse Chapter 44 (wood products) for specific HTS codes and applicable rates.

Dairy Tariff-Rate Quotas

Dairy was one of the most contentious issues in the USMCA negotiations. Canada operates a "supply management" system for dairy that restricts imports through tariff-rate quotas (TRQs). Under USMCA, Canada agreed to provide additional market access for US dairy products, but the system remains highly restrictive.

Note that these quotas govern Canadian dairy exports to the US. For US importers bringing Canadian dairy products in, the TRQ system means you need to secure quota allocation to import at preferential rates. Without quota, the over-quota rates make imports commercially unviable.

Section 122 Surcharge Impact

The Section 122 surcharge of up to 15% has created an unprecedented situation for US-Canada trade. For decades, most goods have crossed the border duty-free under successive trade agreements. The broad application of the Section 122 surcharge to Canadian imports -- including potentially USMCA-qualifying goods -- represents a significant disruption.

The practical impact varies by product:

• Energy imports: Canadian crude oil and natural gas, which enter at 0% MFN rates, could face a 15% surcharge. Given the volume of energy trade ($120+ billion annually), this would have enormous economic consequences. Legal challenges are underway.
• Automotive: Auto parts and vehicles that qualify for USMCA treatment but face the surcharge see a 15% cost increase that disrupts just-in-time manufacturing across the border
• Raw materials: Metals, minerals, and industrial inputs that enter duty-free under USMCA face new costs that ripple through US manufacturing supply chains

As with Mexican imports, the legality of applying Section 122 surcharges to USMCA-qualifying Canadian goods is being challenged in court.

Energy Imports

Canada is the largest foreign supplier of energy to the United States, and the energy trade relationship is unique in its scale and integration:

• Crude oil: Canada supplies approximately 60% of total US crude oil imports, primarily from Alberta's oil sands. This oil travels through cross-border pipelines and is essential to US refinery operations.
• Natural gas: Canada is a major natural gas supplier, particularly to northern US states that rely on Canadian pipeline gas for heating and industrial use.
• Electricity: Cross-border electricity trade helps balance grids in both countries, with significant flows from Canadian hydroelectric facilities to northeastern US states.
• Uranium: Canada is a significant supplier of uranium for US nuclear power plants.

Energy products generally have 0% MFN rates, meaning they enter duty-free regardless of USMCA qualification. The IEEPA tariffs of 25% on Canadian energy (imposed in early 2025 at a reduced 10% rate for energy) were struck down by the Supreme Court. The Section 122 surcharge's application to energy imports faces strong opposition from both US refiners and energy security advocates.

Auto Parts and Automotive Rules of Origin

The US-Canada automotive relationship is the most integrated in the world. Vehicles and parts cross the border multiple times during production, and the industry was designed around duty-free cross-border movement.

USMCA's automotive rules of origin (the same rules that apply to Mexico) are stricter than NAFTA's:

• 75% regional value content for passenger vehicles (up from 62.5% under NAFTA)
• 70% North American steel and aluminum content requirement
• 75% RVC for core parts (engines, transmissions, body/chassis)
• Labor value content: 40-45% at $16+/hour (easily met by Canadian and US production)

Most Canadian-assembled vehicles and parts meet these requirements given Canada's high-wage manufacturing workforce and deep integration with US supply chains. However, vehicles with significant content from non-USMCA countries (particularly Asian components) may fall short of the 75% threshold.

What Is Exempt vs. What Is Not

The USMCA Review: July 2026

Canada, along with Mexico, will participate in the first mandatory USMCA joint review starting July 1, 2026. Key Canada-specific issues expected to feature in the review:

• Dairy market access: The US wants Canada to fully implement its TRQ commitments and may push for expanded access
• Softwood lumber: Pressure to negotiate a new softwood lumber agreement within the USMCA framework
• Digital services tax: Canada's digital services tax on large tech companies has drawn US opposition
• Cultural exemption: USMCA includes a cultural exemption that Canada uses to protect its media and entertainment industries
• Buy American provisions: Canada objects to US procurement policies that exclude Canadian bidders despite USMCA

What Importers Should Do Now

1. Confirm USMCA qualification. Ensure your Canadian imports have proper certification of origin documentation. Self-certification is allowed under USMCA, but you must be prepared to demonstrate compliance if audited.
2. File IEEPA refund claims. If you paid the 25% IEEPA tariff (or 10% on energy) on Canadian imports between early 2025 and February 2026, file refund claims with CBP.
3. Track the Section 122 legal challenges. If you import USMCA-qualifying goods that are being assessed the surcharge, monitor court proceedings and consider whether to file a protest to preserve your refund rights.
4. Prepare for the USMCA review. Engage with industry associations to ensure your sector's interests are represented in the review process. Changes to rules of origin, market access, or dispute resolution could affect your business.
5. Review lumber sourcing. If you import Canadian lumber, model the impact of potential CVD rate changes and the Section 122 surcharge. Consider diversifying sources if total duties make Canadian lumber uncompetitive.

Frequently Asked Questions

Are Canadian imports duty-free in the US?

Most Canadian imports that meet USMCA rules of origin enter the US duty-free. Canada and the US have the largest bilateral trade relationship in the world, and USMCA provides preferential or zero-duty treatment for the vast majority of goods. Notable exceptions include softwood lumber (subject to countervailing duties), dairy products above tariff-rate quota limits, and certain supply-managed agricultural products.

What is the current duty rate on Canadian softwood lumber?

Canadian softwood lumber is subject to countervailing duties that were approximately 8.05% as of the most recent review, though rates are adjusted periodically. These duties exist because the US alleges that Canadian provinces subsidize their lumber industry through below-market stumpage fees. The softwood lumber dispute has been ongoing for over 40 years and was not resolved by USMCA.

How do dairy tariff-rate quotas work under USMCA?

Under USMCA, the US granted Canada-specific tariff-rate quotas (TRQs) for certain dairy products. Within the quota, imports enter at low or zero duty rates. Once the quota is filled, above-quota imports face very high tariffs (often 200%+). Canada agreed to open its dairy market to US products by 3.59% of its domestic consumption, phased in over six years.

Does the Section 122 surcharge apply to Canadian imports?

The Section 122 surcharge has been applied broadly, including to Canadian imports. However, whether this surcharge can legally be imposed on USMCA-qualifying goods is contested. USMCA requires parties to eliminate duties on originating goods. Legal challenges are ongoing, and importers should consult with trade attorneys about their options.

Are Canadian energy imports (oil, gas, electricity) subject to tariffs?

Canadian energy imports generally enter the US duty-free under both USMCA and existing MFN rates (most energy products have 0% MFN rates). Canada is the largest foreign supplier of crude oil, natural gas, and electricity to the US. The IEEPA tariffs on Canadian energy were struck down by the Supreme Court. The Section 122 surcharge's application to energy imports is being challenged as potentially damaging to US energy security.

Related Country Guides

• Mexico Import Tariffs Guide 2026 -- The other USMCA partner
• China Import Tariffs Guide 2026 -- The most tariffed US trading partner
• Vietnam Import Tariffs Guide 2026 -- Alternative sourcing destination
• India Import Tariffs Guide 2026 -- Emerging manufacturing hub