CN's Q2 Growth Signals Sustained Canada and US Border Crossing Volume Through 2026

Key Takeaways

• Rising rail volumes at Canada and US border crossings mean longer CBSA processing queues and CAD filing backlogs through year-end.
• Importers relying on CUSMA preferential duty claims face heavier origin verification workload as CBSA scrutinizes higher-volume flows.
• Cross-border rail terminals are capacity-constrained; late CAD submission or missing commercial invoices now risk multi-day detention charges.
• Plan RPP bond limits and CARM Client Portal user access now to avoid release bottlenecks during Q3 and Q4 peak season.

CN’s Volume Surge Points to Busier Canada and US Border Crossings

Canadian National Railway reported higher revenue and earnings in the second quarter of 2026 and raised its full-year guidance, citing strong volume growth and operational performance. For importers moving goods across the Canada and US border crossing network by rail, CN’s optimism is a proxy for sustained freight demand through year-end. That demand translates directly into heavier CBSA workload, longer queues for Commercial Accounting Declaration (CAD) processing, and tighter capacity at cross-border terminals where commercial rail traffic merges with customs clearance.

Rail carriers publish earnings guidance based on booked contract volumes and spot-market trends. When CN raises its forecast mid-year, it signals that shippers are committing more container and bulk loads to the cross-border lanes. Those shipments all require customs clearance before CBSA releases them into Canadian commerce, and the clearance process has become less forgiving under CARM.

What Higher Rail Throughput Means for CAD Filing

Every commercial railcar crossing into Canada from the United States requires a CAD filed via the CARM Client Portal. When aggregate rail volumes rise, CBSA officers at in-gate terminals process more declarations per shift. The result is longer average release times, particularly for shipments that arrive without pre-filed CADs or that trigger exam flags for CUSMA origin verification or SIMA subject-goods screening.

Importers who use Release Prior to Payment programs and file CADs before the train crosses see minimal delay. Importers who wait for the carrier’s arrival notice before instructing their broker to file often find their cargo sitting in the terminal queue for 24 to 48 hours. That delay matters less for warehouse-destined freight with flexible delivery windows, but it becomes a cost problem for just-in-time manufacturing inputs or temperature-sensitive loads that rack up detention charges while waiting for CBSA release.

Our Montreal-based colleagues at FENGYE LOGISTICS see this pattern weekly during peak season. A railcar arrives at the CN Taschereau Yard interchange on Monday morning. The CAD is filed Monday afternoon. CBSA releases it Tuesday. Drayage picks it up Wednesday. The importer intended a Tuesday cross-dock to outbound LTL, but the clearance delay pushed the whole schedule back a day and triggered an extra day of terminal storage at the carrier’s published demurrage rate.

CUSMA Origin Claims Under Volume Pressure

Higher cross-border freight volumes also mean more CUSMA preferential-duty claims flowing through the CARM system. CBSA has finite capacity to conduct origin verifications, and when the claim count rises, so does the probability that any individual shipment gets selected for post-release review. An origin verification request typically arrives 60 to 180 days after the initial CAD was filed, asking the importer or broker to substantiate the tariff-shift rule or regional-value-content calculation that justified the zero-percent MFN duty claim.

The verification itself is straightforward if the importer maintained clean commercial documentation and a valid CUSMA certification from the US supplier. It becomes a penalty exposure if the importer claimed origin without a certification, misclassified the HS 6-digit code, or applied the wrong tariff-shift rule. AMPS penalties for incorrect origin claims range from written warnings to financial penalties in the four-figure range per contravention, depending on the D-memorandum that applies and the importer’s compliance history.

Importers who handle origin documentation in-house should budget time now to audit their current-quarter CUSMA claims before CBSA’s verification letters start landing in Q4. Importers who delegate origin work to their broker should confirm that the broker is actually receiving and reviewing supplier certifications, not just checking a box in the CAD filing screen.

Capacity Planning for Q3 and Q4 Peak Season

CN’s raised guidance suggests that the volume trend will hold through the second half of 2026. For importers, that means planning RPP bond limits and CARM Client Portal user capacity before the fall peak hits. If your current RPP bond is sized for your Q1 and Q2 monthly average import value, and you expect Q4 volumes to spike by 30 to 50 percent, you risk breaching the bond limit and forcing CBSA to hold releases until you post a financial security top-up.

The same planning applies to portal access. If you have one designated employee filing CADs in the CARM Client Portal, and that person is also managing origin certifications, AMPS responses, and post-release adjustments, you are running a single point of failure. Adding a second trained user now costs you a few hours of onboarding. Waiting until mid-November when your primary filer is on vacation and 40 railcars are queued at the border costs you detention charges and customer goodwill.

We routinely see importers treat customs compliance as a back-office function that can scale on demand, then discover in October that CBSA processing timelines and carrier free-time windows do not flex to accommodate their staffing gaps. The time to fix that gap is now, while Q3 volumes are still manageable.

The Broker’s Role in High-Volume Environments

When cross-border rail traffic is steady and predictable, many importers handle their own CAD filings and only escalate to a broker for complex classifications or SIMA queries. When volumes surge and CBSA processing queues lengthen, the value of a licensed broker shifts from occasional troubleshooting to daily workflow management: pre-filing CADs before the train departs the US origin, monitoring CBSA release status in real time, coordinating with the rail carrier’s customer service desk to confirm free-time expiry, and handling post-release adjustments without triggering AMPS penalties.

That operational rhythm is not something an importer can build in-house unless they are running enough monthly volume to justify a dedicated trade compliance team. For most mid-market importers, the cost-effective answer is a standing broker relationship that covers routine freight forwarding and clearance work, leaving the importer’s staff free to focus on demand planning, supplier negotiations, and customer delivery.

If your current clearance process relies on emailing commercial invoices to your broker the day the railcar crosses, and waiting for the broker to file the CAD and chase CBSA for release, you are already running behind. The importers who come out ahead in high-volume environments are the ones who pre-file CADs, maintain clean origin documentation, and treat CBSA release timelines as a supply-chain constraint to plan around, not a surprise to react to.

We file CADs against cross-border rail shipments daily. The process is routine when the documentation is clean and the HS classification is settled. Get in touch if you want to walk through what that looks like for your inbound lanes.

Frequently Asked Questions

How does higher rail freight volume affect CBSA processing times at the Canada and US border?

When cross-border rail volumes spike, CBSA officers process more Commercial Accounting Declarations (CADs) per shift, which can extend release times from same-day to 24–48 hours for non-PARS shipments. Importers using Release Prior to Payment programs see less delay, but exam-flagged cargo still queues behind routine releases.

What is a CAD and why does it matter for rail imports from the US?

A Commercial Accounting Declaration (CAD) is the CARM-era customs entry document filed via the CARM Client Portal, replacing the old B3 form as of CARM Phase 2 Release 3 in 2024. Every commercial rail shipment crossing into Canada requires a CAD before CBSA releases the goods.

Do I need a separate RPP bond for rail imports versus truck crossings?

No. Your Release Prior to Payment bond with CBSA covers all modes (rail, truck, ocean, air) as long as the bond amount meets your rolling 30-day import value. Most mid-market importers post CAD 25,000 to CAD 100,000 depending on monthly volume.

How does CUSMA origin verification work for rail shipments from the US?

CBSA applies the same CUSMA (formerly USMCA) origin rules to rail imports as any other mode. You claim preferential duty treatment at line-item level in the CAD, and CBSA may request commercial invoices, bills of material, or a CUSMA certification under Chapter 4 during post-release verification.

What happens if my CAD is late and the railcar is already at the border?

The carrier holds the car at the in-gate terminal until CBSA releases it. Rail detention charges typically start after the first 48 hours free time and run CAD 150 to CAD 300 per car per day depending on the terminal and commodity type.

Can I file a CAD myself or do I need a licensed customs broker?

You can file your own CAD if you register as a CARM importer and obtain CBSA portal credentials, but most importers delegate to a licensed broker to handle HS classification, duty calculation, CUSMA claims, and AMPS penalty defense.

Source: Inside Logistics