US Tariff Relief for Canada and Mexico: Exemption & Rate

If you’ve been watching trade headlines lately, you’ve seen a flurry of tariffs, exemptions, and reversals between the U.S., Canada, and Mexico. The picture is messy, but beneath the daily announcements lies a clear data story: some goods are shielded by the USMCA, others are being used as bargaining chips, and each country’s level of dependency on American consumers determines how hard the leverage pulls. This article unpacks the current tariff rates, the scope of relief, and what it means for the three economies.

Percentage of Canada–US trade tariff-free under USMCA: 85% ·
Percentage of Mexico–US trade tariff-free under USMCA: 84% ·
Additional US tariff rate on Canada and Mexico (Feb 2025): 25% ·
Canada tariff raised to (March 2025): 35% ·
Mexico tariff reprieve duration: 90-day extension ·
Share of Mexico’s exports destined for the US: 80%

Seven key data points lay out the playing field:

Are Canada and Mexico exempt from US tariffs?

Scope of USMCA exemptions

Over 85% of Canada–US trade and 84% of Mexico–US trade remains tariff-free under the USMCA, according to analysis from DLA Piper (international law firm). Goods that qualify for preferential treatment under the agreement are effectively exempt from the additional 25% tariffs that took effect on February 1, 2025.

The Trump administration quickly paused the additional 25% tariffs for one month on USMCA-qualifying goods, a move that took effect on March 7, 2025. However, non-USMCA goods from both countries remain fully subject to the increased rates.

Temporary reprieves vs permanent exemptions

Mexico received a 90-day extension on higher tariff levies in March 2025, meaning its rates stay at 25% for now. Canada did not receive a similar pause; instead, its tariff was raised from 25% to 35% on March 6, 2025. This creates an uneven playing field where Canada faces steeper penalties than Mexico, despite both countries being USMCA partners.

For potash from Canada and Mexico that did not qualify for the USMCA pause, the tariff was reduced from 25% to 10% — a small concession for agricultural inputs.

The implication: The tariff architecture creates a two-tier system that penalizes non-compliant trade while sheltering the majority.

Why is Trump putting tariffs on Canada and Mexico?

Official justifications: immigration and fentanyl

The Trump administration cited illegal immigration and drug trafficking as the primary reasons for the tariffs, according to an analysis by the Peterson Institute for International Economics (nonpartisan think tank). The February 1 announcement framed the levies as a response to fentanyl trafficking and unauthorized immigration.

Economic coercion for policy changes

Trade policy experts see tariffs as leverage to renegotiate terms or enforce border security. By targeting the two largest U.S. trading partners — which together with China account for over 40% of U.S. foreign trade, totaling more than USD 1.6 trillion, as DLA Piper notes — the administration can apply maximum pressure while keeping USMCA-covered trade less affected.

Canada and Mexico have different political relationships with the U.S., which may explain the uneven tariff treatment. Mexico’s 90-day extension suggests a willingness to negotiate; Canada’s tariff increase suggests less political wiggle room.

The pattern: Tariff rates are calibrated to each country’s political responsiveness, not just trade deficits.

Is the 25% tariff still in effect for Canada?

Current tariff rates on Canadian imports

The initial 25% tariff on Canada was increased to 35% on March 6, 2025, based on executive orders reported by DLA Piper. Canadian energy imports face a lower 10% tariff. Over 85% of Canada–U.S. trade remains duty-free under USMCA, but the non-exempt goods now face the highest rate in decades.

Changes in March 2025

Exemptions expanded significantly in early March 2025. The one-month pause on USMCA-qualifying goods provided temporary relief for compliant shipments. However, the overall rate for non-exempt goods went up, not down. For potash that didn’t qualify for the USMCA pause, the tariff was reduced to 10%.

The catch: The higher rate on Canada reverses the usual pattern where larger trade partners get more favorable treatment.

Which country sends 80% of its exports to the United States?

Mexico’s trade dependency on the US

Mexico sends roughly 80% of its exports to the United States, making it the most dependent of the two neighbors on the American market. This figure is widely cited in trade analyses, including by DLA Piper. The high dependency means that even a 25% tariff on a small portion of trade can have outsized effects on Mexican industries.

Canada’s export share comparison

Canada sends about 75% of its exports to the U.S., a slightly lower but still dominant share. Combined, the two countries account for a massive chunk of U.S. imports, totaling over USD 1.6 trillion annually with China included.

The data shows that high dependency makes both countries vulnerable to U.S. tariff policy. A 35% tariff on Canada’s non-exempt goods or a 25% tariff on Mexico’s non-exempt goods can quickly translate into lower profits, factory slowdowns, or layoffs north and south of the border.

The implication: Dependency creates a built-in incentive for both to negotiate rather than escalate further.

Which country has the biggest trade surplus with the USA?

China, Mexico, and Canada surplus figures

China holds the largest trade surplus with the United States. Among North American partners, Mexico has a significant surplus, while Canada has a comparatively smaller surplus. These figures are shaped by the composition of trade — Mexico exports more consumer goods and vehicles, while Canada exports more energy and raw materials.

Impact on tariff negotiations

Trade surplus size influences which countries are targeted for tariffs. A larger surplus often attracts more scrutiny. Mexico’s surplus with the U.S. has made it a frequent target of tariff threats. Canada’s smaller surplus, coupled with its energy exports, may explain why some exemptions exist (e.g., the 10% energy tariff). However, Canada’s tariff rate was raised to 35%, suggesting that surplus size alone doesn’t determine policy.

The pattern: Tariff policy is shaped by a mix of trade surplus, political leverage, and sectoral bargaining.

Timeline of key events

• February 1, 2025 – President Trump announces 25% tariff on most imports from Canada and Mexico, plus 10% on Canadian energy. (Peterson Institute)
• February 4, 2025 – Tariffs take effect at 12:01 a.m. Eastern Time. (DLA Piper)
• March 4, 2025 – U.S. begins implementing the new tariffs on imports from Mexico, Canada, and China. (DLA Piper)
• March 4, 2025 – Canada announces 25% retaliatory tariff on CAD 155 billion of U.S. goods, with CAD 30 billion effective immediately. (TD Economics)
• March 6, 2025 – Trump signs orders expanding exemptions significantly for goods qualifying under USMCA. Canada tariff raised to 35%; Mexico given 90-day extension. (DLA Piper)
• March 7, 2025 – USMCA-qualifying goods pause takes effect for one month. (DLA Piper)
• 2025 (ongoing) – Canada imposes retaliatory tariffs on U.S. steel, aluminum, and auto imports.

Quotes from the front lines

“The tariffs are a response to fentanyl trafficking and unauthorized immigration.”

— White House Fact Sheet (via Peterson Institute for International Economics)

“The orders significantly expanded the goods exempted from tariffs under the USMCA.”

— BBC News report cited by DLA Piper

The contrast between the White House’s security framing and the actual exemptions pattern tells a story: border rhetoric is the public face, but trade leverage is the engine.

Summary

The uneven tariff relief between Canada and Mexico reveals a clear pattern: USMCA exemptions shield the majority of trade, but the remaining exposed sectors are being used as bargaining chips. Mexico bought a 90-day pause, while Canada saw its rate rise to 35%. For Canadian exporters, the choice is clear: diversify markets quickly, or accept increasingly punitive costs on the U.S. trade they rely on for three-quarters of their sales.

Understanding the broader context of Trumps tariff policies on Canada helps clarify why relief measures remain uneven.

Frequently asked questions