Canadian brands selling into the United States woke up to a different reality on March 4, 2025. A 25% tariff on most Canadian goods — imposed under the International Emergency Economic Powers Act (IEEPA) — changed the math on every cross-border shipment overnight. Five months later, the $800 de minimis exemption disappeared too.

For brands that built their US growth on shipping small parcels duty-free from Canadian warehouses, the ground shifted under their feet. The question stopped being “should we adjust?” and became “how fast can we restructure our fulfillment before margins erode further?”

This guide breaks down what changed, what it costs, and how Canadian brands are rethinking fulfillment to stay competitive south of the border.

What Actually Changed: The Tariff Timeline That Matters

The tariff situation has moved fast and changed direction multiple times. Here’s what’s in effect as of early 2026:

March 4, 2025: The US imposed 25% IEEPA tariffs on Canadian goods crossing the border. Energy products and potash got a lower rate of 10%. These tariffs applied on top of any existing duties — not instead of them.

August 29, 2025: The Section 321 de minimis exemption was suspended. Before this date, individual shipments worth $800 or less entered the US duty-free. That door closed for all countries, including Canada. Shipments that previously cleared customs with no duties now face either a flat fee ($80–$200 per item) or an ad valorem rate of 30%, depending on how they enter the country.

February 24, 2026: IEEPA tariff collection on Canadian goods was paused, according to US Customs and Border Protection guidance. A new 10% global tariff took effect instead. CUSMA-compliant goods are exempt from this rate — non-compliant goods face the 10% tariff, down from the earlier 35%.

July 1, 2026: The CUSMA (formerly USMCA) treaty review date. This will determine whether the trade agreement continues, gets renegotiated, or faces further disruption.

The Canadian Federation of Independent Business has been tracking these shifts in real time, and the bottom line is clear: the old model of shipping everything from Canada with minimal friction is gone.

Why De Minimis Mattered More Than Most Brands Realized

The $800 de minimis threshold wasn’t just a customs rule — it was the foundation of many Canadian brands’ US fulfillment economics.

A DTC brand shipping 500 orders a day from Vancouver to US customers paid zero duty on each of those shipments, as long as each order stayed under $800. That’s not a loophole. It was written into US trade law and hundreds of Canadian ecommerce companies built their logistics around it.

When that exemption disappeared in August 2025, those same 500 daily orders suddenly carried duty charges. For a brand selling $60 apparel items, the math changed like this:

• Before August 2025: $0 duty per order. Clean customs clearance with minimal paperwork.
• After August 2025: $25+ per order in duties and processing fees for postal shipments, or formal entry requirements with Merchandise Processing Fees for commercial carriers.

On 500 orders a day, that’s $12,500 in new daily costs — roughly $4.5 million annually — that didn’t exist twelve months earlier.

The brands that felt this hardest were the ones shipping high-volume, low-value products. Cosmetics, pet accessories, fashion accessories under $100 — these categories went from duty-free to margin-crushing practically overnight.

CUSMA Compliance: The Line Between 10% and Zero

With the current tariff structure, CUSMA compliance is the single most important factor in your landed cost calculation.

Products that qualify under CUSMA rules of origin enter the US at 0% — no tariff, no surcharge. Products that don’t qualify face the 10% global rate. For a brand shipping $2 million worth of goods into the US annually, that’s the difference between $0 and $200,000 in tariff costs.

But CUSMA compliance isn’t automatic. Your products need to meet rules of origin requirements, which means proving that enough of the product’s value was created in Canada, the US, or Mexico. The specifics depend on the product’s Harmonized System (HS) code, and the rules vary widely:

• A t-shirt sewn in Canada from Canadian-milled fabric probably qualifies.
• A t-shirt sewn in Canada from Chinese fabric might not, depending on the tariff shift rule for that HS code.
• A product assembled in Canada from mostly imported components needs careful analysis.

Getting this right requires proper documentation — certificates of origin, supplier declarations, and HS code classification. Brands that invested in this paperwork early in 2025 are now shipping at 0%. Brands that didn’t are paying 10% on every shipment while they catch up.

Three Fulfillment Strategies Canadian Brands Are Using Right Now

The tariff changes have pushed Canadian brands toward three distinct fulfillment approaches. Which one fits depends on order volume, product mix, and how much of your revenue comes from US customers.

1. Dual-Country Inventory with Domesticated Shipping

The most common response among established brands: split inventory between a Canadian warehouse and a US warehouse (or a Canadian 3PL with cross-border domesticated shipping capabilities).

Here’s how it works. Bulk shipments move from Canada to the US in consolidated freight — one customs entry for a full container instead of hundreds of individual parcel entries. Duties are paid once at the container level, not per-order. Once inventory clears into the US, individual orders ship domestically with no further customs involvement.

The economics shift dramatically:

• Duty cost per unit drops because you’re paying tariffs on wholesale-value goods rather than retail-priced individual orders.
• Shipping speed to US customers improves from 5-8 days (cross-border parcel) to 2-3 days (domestic US ground).
• Returns become simpler because they stay within one country’s logistics network.

A 3PL with bi-national operations can manage this split without requiring you to set up separate contracts with two different warehouse providers.

2. CUSMA-First Product Strategy

Some brands are approaching this from the product side rather than the logistics side. They’re auditing their entire catalog for CUSMA eligibility and restructuring sourcing to qualify more SKUs.

This means:

• Shifting component sourcing from non-CUSMA countries to North American suppliers
• Increasing Canadian or US manufacturing content above the threshold for their HS codes
• Working with customs brokers to properly classify and document everything

It’s not fast work — reclassifying 200 SKUs and renegotiating supplier contracts takes months. But brands that get there ship at 0% while competitors pay 10%.

3. US-Only Fulfillment for US Customers

For brands where 70%+ of revenue comes from US customers, some are moving their entire US-bound inventory stateside. They import in bulk, pay duties once, and run all US fulfillment from American warehouses.

The downside: you’re now managing two completely separate supply chains. Canadian orders ship from Canada. US orders ship from the US. Your inventory visibility needs to cover both locations in real time, or you’ll end up with overstock in one country and stockouts in the other.

This approach works best for brands with predictable US demand and the capital to float inventory in two locations.

What This Means for Your Landed Cost Calculation

Landed cost — the total price of getting a product to your US customer’s door — now includes variables that didn’t exist two years ago. Here’s what to factor in:

Product cost + freight to US warehouse or port of entry

+ Duties (0% if CUSMA-compliant, 10% if not, plus any product-specific tariffs like 25% Section 232 on steel/aluminum)

+ Merchandise Processing Fee (0.3464% of declared value for formal entries, minimum $31.67)

+ Customs broker fees ($150-$250 per entry for formal customs clearance)

+ Compliance costs (CUSMA documentation, HS code classification, certificate of origin prep)

+ Last-mile US delivery (domestic rates if using domesticated shipping strategy)

The brands getting this right are the ones that modeled these costs before committing to a strategy — not the ones who discovered unexpected duty bills after the fact.

The Returns Problem Nobody Talks About

Cross-border returns were already expensive. Tariffs made them worse.

When a US customer returns a product that was shipped from Canada, the returned item crosses the border again. Depending on how the return is processed, you might face duty exposure on the way back. The rules around duty drawback (recovering duties paid on goods that are re-exported) exist but are complex and slow — CBP processes can take months.

This is another reason domesticated shipping strategies have gained traction. When US orders ship from US-based inventory, returns stay in the US. No second border crossing. No duty questions. The returned product goes back into US stock and ships out again to the next customer.

For brands with return rates above 15% — common in apparel and footwear — this alone can justify the cost of a dual-country fulfillment setup.

How to Evaluate Whether Your Current Setup Still Works

Before committing to a new strategy, run this diagnostic on your current fulfillment model:

1. What percentage of your orders go to US addresses?

Under 20% — your current Canadian-only setup might still work. The duty costs exist but may not justify a full restructuring.

Over 50% — you’re almost certainly losing money on every US order without a domesticated shipping strategy.

2. Are your products CUSMA-compliant?

If yes and you have documentation to prove it, your tariff exposure drops to 0%. That changes the calculus significantly.

If no, you’re paying 10% on every shipment — and that’s before product-specific tariffs.

3. What’s your average order value?

Higher AOV products absorb duty costs more easily. A $300 jacket with 10% duty adds $30 — annoying but survivable. A $25 pet toy with $25 in flat duty fees just doubled in cost.

4. What’s your US return rate?

Above 10%, cross-border returns are eating into whatever margin the tariffs left. Domesticated shipping solves this.

5. Can your 3PL handle bi-national operations?

Not all warehouse providers can manage inventory across borders, handle B2B and B2C from the same network, or coordinate bulk customs entries. If yours can’t, it might be time to evaluate partners that can.

What Happens Next: CUSMA Review and Beyond

July 1, 2026 is the date on everyone’s calendar. The CUSMA review will determine the trade agreement’s future — and with it, the rules of the game for Canadian brands in the US market.

Three scenarios are on the table:

1. CUSMA continues largely unchanged. Compliant goods keep their 0% access. Non-compliant goods stay at 10%. Brands that invested in compliance win.
2. CUSMA gets renegotiated with stricter rules of origin. Some products that qualify today might not qualify tomorrow. More brands face tariff exposure.
3. CUSMA faces significant disruption. Tariff rates could change again, new product categories could be targeted, or the agreement could stall entirely.

Nobody can predict which way it goes. What you can control is how resilient your fulfillment infrastructure is. A brand with domesticated shipping, CUSMA documentation in order, and flexible inventory allocation across two countries can absorb any of these outcomes. A brand that’s still shipping individual parcels from Vancouver and hoping for the best cannot.

Moving Forward Without Guessing

The tariff environment will keep changing. What won’t change is the math: Canadian brands need a cost-effective, fast, and compliant way to serve US customers.

That means getting your CUSMA house in order, understanding your landed costs down to the penny, and working with a fulfillment partner that operates on both sides of the border.

If you’re evaluating whether your current setup can handle the new tariff reality, talk to our team about your specific product mix and shipping patterns. The right strategy depends on your numbers — not generic advice.