If you're moving goods between Canada and the United States, the tariff conversation has changed more in the last 18 months than in the previous decade. Between CUSMA reviews, retaliatory measures on steel and aluminum, and the constant noise about new duties, it's hard to know what actually applies to your shipments versus what's just headline fodder.
Here's the honest answer most brands need: Canada US tariffs are usually manageable if you understand a few key rules and classify your goods properly. The businesses that get burned aren't the ones paying high duties — they're the ones who got the HS code wrong, missed a CUSMA certificate, or assumed their supplier handled it. Let's walk through what matters.
How Canada US Tariffs Actually Work
When goods cross the BC-US border (or any Canadian port of entry), CBSA assesses duties based on three things: the HS classification, the country of origin, and the declared value. Tariffs aren't a single rate — they're a mix of MFN (Most-Favoured-Nation) duty, preferential rates under trade agreements like CUSMA, plus 5% GST and any provincial taxes that apply.
For US-origin goods entering Canada under CUSMA, the duty rate is typically 0% on the vast majority of HS codes — provided you have a valid certification of origin. The catch is that 'US-origin' has a specific legal meaning. A product assembled in Ohio from Chinese components may not qualify, and that's where importers get tripped up.
- HS Code — the 10-digit classification that determines your duty rate. Get this wrong and you'll either overpay or face a CBSA reassessment with penalties.
- Country of Origin — not where it shipped from, but where it was substantially produced. CUSMA has specific rules of origin for each product category.
- Declared Value — the transaction value in CAD, including freight to the border. Undervaluing is one of the fastest ways to trigger an audit.
The CUSMA Advantage Most Brands Underuse
CUSMA (the replacement for NAFTA, in effect since July 2020) lets qualifying goods move duty-free between Canada, the US, and Mexico. The threshold for low-value shipments was also raised — goods valued under CAD $150 can enter Canada duty-free via courier, and under $40 they're also tax-free. That matters if you're doing direct-to-consumer fulfillment from a US warehouse.
But here's what most businesses get wrong: they assume CUSMA applies automatically. It doesn't. You need a certification of origin signed by the producer, exporter, or importer, and CBSA can ask to see it for up to six years after import. If you're sourcing from a US supplier, ask them in writing whether their goods qualify and get the certification on file before your first shipment lands.
Where the Surcharges and Surprise Costs Hide
Even when the tariff itself is 0%, your landed cost includes more than duty. GST is 5% on the duty-paid value of nearly every commercial import. Then you've got brokerage fees (typically $50–$150 per entry through a licensed customs broker), bond fees if you're a frequent importer, and any anti-dumping or countervailing duties that apply to specific commodities like certain steel products or solar panels.
Section 232 measures on steel and aluminum, plus Canada's retaliatory surtaxes, have moved around several times since 2018. If you import anything containing significant metal content — kitchenware, industrial parts, certain bike components — verify the current status before you ship. A 25% surtax on a $40,000 container is a $10,000 surprise nobody plans for.
- GST/HST — 5% federal GST applies on most commercial imports, recoverable if you're GST-registered.
- Brokerage Fees — flat or tiered fees per entry; consolidating shipments reduces per-unit cost.
- Anti-Dumping Duties — apply to specific HS codes regardless of origin; check the CBSA SIMA list before importing.
- Excise Tax — applies to fuel, jewellery in some cases, and certain other categories.
Practical Steps to Keep Tariff Costs Predictable
The brands we work with at our Metro Vancouver facility who have the smoothest cross-border experience all do the same handful of things. They classify their products once, properly, with a broker — not by guessing from a Google search. They keep CUSMA certifications on file for every SKU sourced from the US. And they build duty into their landed cost spreadsheet from day one rather than treating it as a surprise line item.
If you're shipping from China or Vietnam through a US port and then trucking into Canada, remember: the goods are still Chinese-origin for tariff purposes. Routing through Long Beach doesn't make them CUSMA-eligible. For those flows, our freight import team usually recommends bringing containers directly into Vancouver — shorter timelines, one customs entry instead of two, and no risk of US transit complications.
When a 3PL Makes Tariff Management Easier
A good 3PL doesn't just store and ship — they coordinate with your customs broker, flag classification issues before they become CBSA reassessments, and structure your inbound flow to minimize total duty paid. For Amazon sellers in particular, our Amazon FBA prep service handles the customs side so your inventory clears Canadian customs once and ships to FBA Canada warehouses without re-entry headaches.
We also use Trenvar WMS to track inventory by country of origin, which matters when you're selling the same SKU sourced from multiple suppliers — some duty-free under CUSMA, some not. That visibility alone has saved clients five-figure sums on year-end reconciliations.
Ready to Simplify Your Cross-Border Logistics?
If tariffs, duties, and CBSA paperwork are eating into your margins or your evenings, let's talk. Our team handles customs brokerage, freight, and fulfillment under one roof in Surrey, BC — so you get one point of contact instead of four vendors pointing fingers. Get a free quote on your inbound shipments, or book a consultation with our team to walk through your specific product mix and sourcing setup.