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Tariffs and Trade Resource Centre

Discussions on trade policy have spilled over Canada-U.S.-Mexico borders to involve trade partners around the world. With sudden shifts by the new U.S. administration, the continuing threat of new tariffs and trade barriers creates growing uncertainty in the market. These tariffs also provide a strong motivation for businesses to reorient their trade and supply chains to mitigate risk and remain globally competitive.

What would tariffs mean for Canadian exports, sector by sector? What’s the potential impact of retaliatory measures? How would reciprocal tariffs impact Canada-U.S. relations — and your business? How and where can you reposition inbound and outbound trade to other markets?

Keep an eye on this page as BLG’s international trade lawyers bring you the latest on the tariff issue, and how your company can adapt.

Canada US

The inside track on U.S. tariffs and Canadian trade

From Rambod Behboodi 


March 12, 2025 – Trade War goes global

On March 12, 2025, promised (or threatened) U.S. tariffs of 25per cent on imports of steel and aluminium, and certain products containing steel and aluminium, “from most countries” under section 232 of the Trade Expansion Act of 1962 came into effect. This was after a new finding that the “articles are being imported into the United States in such quantities and under such circumstances as to threaten to impair the national security of the United States”.

These new measures are not, of course, new. For the most part, they reinstate the June 2018 tariffs on steel and aluminum products that covered items such as steel pipes. The 2025 measures go further by increasing the tariffs on aluminum to 25 per cent, up from 10 per cent in 2018, and by extending the tariffs to other steel and aluminum products, such as household products.

In response, so far, the EU has announced retaliatory tariffs targeting €26 billion worth of U.S. goods, in two tranches. First, the EU will unsuspend the measures on €8 billion worth of goods originally imposed in 2018 and 2020. Second, the EU will impose a package of new measures on €18 billion of U.S. trade, as of mid-April, after consultations with Member States and stakeholders. The consultations are expected to take two weeks. On March 26, 2025, and in the following days, the consultation period will conclude and the Commission will finalize its draft of the countermeasures which is to take effect by mid-April.


March 11, 2025 – The week the world of trade changed

What a week it’s been!

I’ve been practicing trade law for 32 years now and in that time, only once – when the gavel came down on the WTO negotiations in December 1993 – could I recall a week as momentous as this. That gavel launched a new era in the world of trade: the establishment of a rules-based framework for global trade, one aiming for predictability and security – and therefore prosperity – for all; a new era not just for governments that accepted the negotiated outcome, but for businesses (and their workers), who could rely on background rules governing their international transactions in goods, services, and intellectual property.

On March 4 of this year, a different world was born. After a 30-day reprieve, the United States formally imposed 25 per cent tariffs on all goods other than energy, and 10 per cent tariffs on energy, of Canadian origin imported into the United States. Canada swiftly retaliated, as it had said it would. Three days later, a new Executive Order reversed the tariffs for “USMCA compliant” goods until April 2. But not without some additional drama: the reprieve initially applied to Mexico following a “respectful dialogue” between presidents; it was extended to Canada some hours later.

The new Executive Order did something else. Following intensive lobbying by the U.S. agriculture sector, the U.S. lowered the tariffs – now suspended – on potash to 10 per cent. The lower tariffs on energy and potash somewhat undermine early Administration assertions that the tariffs would have minimal or no impact on prices. Be that as it may, April 2 is now the new deadline for the imposition of tariffs initially formally announced on February 1, ostensibly to stem the flow of fentanyl and illegal migrants from Canada.

But that is not all.

On March 12, a new set of tariffs – really, an old one from 2018 exhumed for new effect – on steel and aluminum is slated to enter into force. And on April 2, “reciprocal tariffs” to match tariffs that the trading partners of the United States had already negotiated with the U.S. in multilateral or bilateral fora (in exchange for tariffs the United States routinely applies in its own sensitive sectors), to counter domestic and non-discriminatory value-added taxes of its trading partners, and to correct for unspecific “non-tariff barriers”. I’ve written about all this below.

In the meantime, Canada’s first announced retaliation list – on $30 billion in U.S. imports - remains in force. Ontario has announced its own measures, including a 25 per cent surcharge on electricity exports to the United States (we will write on that shortly). The second list has been postponed; it may yet be revived on March 12. President Trump, having already stated on multiple occasions that the United States does not need anything from Canada, reacted to the Ontario electricity price hike by announcing that he would increase the tariffs on steel and aluminum from Ontario to 50 per cent. The United States wishes, it would seem, to continue to have unlimited access to cheap Canadian energy exports, even as it restricts access to Canadian goods.

As if that weren’t enough movement for one week, China announced a series of new measures on canola oil and meal, peas, and pork, to counter Canada’s imposition of measures on Chinese imports of electric vehicles. More on that later.


Feb. 27, 2025 – A new tempest this way comes

Earlier we wrote about a communication by President Trump about the unfairness of the Value Added Tax. Now the U.S. Commerce Secretary has added his official perspective on the matter. Mr. Lutnick “has warned that Canada's national sales tax will be subject to retaliation.”

Retaliation is, of course, a curious term. It is not clear how Canada’s non-discriminatory national sales tax is harming the United States, U.S. exports to Canada, or – to pick up on a favourite theme – border security. What is the issue? These are the reported words of the Commerce Secretary of the United States:

"We're supposed to have a free trade agreement with Canada, but they have a 5 per cent national tax," Lutnick told Fox News, in an interview following the first cabinet meeting of the Trump administration. "They tax so many different things. It's outrageous. They basically cheat around the sides, and then when we don't act, they stop cheating around the sides. They cheat right down the middle. And the President is sick and tired of it."

Read the whole article here.

Tariff and trade related insights

Canadian exports

With regulatory changes threatening just about every sector of the Canadian economy, BLG’s guidance as a full-service firm will prove a real advantage to Canadian companies looking for strategic solutions on tariff and non-tariff trade barriers. Our International Trade & Investment Group is the most senior and experienced in Canada, and can provide assistance to clients in all industries, including on:

  • Tariff mitigation
  • Supply-chain restructuring
  • Change in business relationships between related Canada-U.S. parties
  • Transfer pricing concerns
  • Certification of origin issues
  • Force majeure and related contractual clauses

You can’t afford to be passive in protecting your interests.

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