Import Document Requirements for Canada: What Commercial Shipments Need in 2026

Importing commercially into Canada has always been a documents game, but the rules of the game changed more in the last two years than in the previous twenty. The CBSA Assessment and Revenue Management system (CARM) is now the system of record for commercial imports, the B3 coding form that brokers filled out for decades is gone, and as of this year importers can no longer lean on their broker’s business number to get goods released.

This guide walks through what a commercial shipment into Canada requires in 2026, in the order the requirements actually arrive: before the goods ship, at release, at accounting, and when claiming preferential duty treatment.

Before anything ships: registration

Three prerequisites exist before the first carton moves, and all three are on the importer, not the forwarder:

• A Business Number with an import-export (RM) program account. This is the identity every declaration is filed under.
• Registration in the CARM Client Portal. CARM has been the CBSA’s official system for assessing and collecting duties and taxes on commercial goods since October 2024. An importer who is not registered cannot account for goods, full stop.
• The importer’s own financial security, for release before payment. Under CARM, importers who want goods released before duties and taxes are settled post their own security through the portal rather than riding their customs broker’s bond.

The date that makes this a 2026 story: since January 1, 2026, a customs broker’s business number can no longer be used to release or account for commercial goods on an importer’s behalf. An unregistered importer now means shipments that cannot clear, late accounting penalties, or freight sitting at the border. Brokers still file and advise; what they can no longer do is stand in for the importer’s registration.

At the border: the release package

The CBSA’s documentation requirements for commercial shipments are set out in Memorandum D17-1-1. For release, the package comes down to four things:

1. Cargo control data. The carrier transmits cargo and conveyance information to the CBSA electronically before arrival (eManifest), and the resulting cargo control number is the thread that ties the physical shipment to its declarations.
2. An acceptable invoice. What “acceptable” means has its own memorandum, covered in the next section.
3. Permits, licences, and certificates. Any that apply to the goods: food, plant and animal products under the CFIA, consumer products and drugs under Health Canada, and the other participating government agencies. These requirements attach to the goods themselves, and no general customs paperwork substitutes for them.
4. Accounting. The declaration that assesses duties and taxes, which since CARM means the CAD, covered below.

The classification on that accounting is expected at Canada’s full 10-digit tariff level, not just the international six digits - the process for getting those digits right is its own topic, covered in our HS classification guide.

The invoice: commercial invoice or Canada Customs Invoice

Invoice requirements live in Memorandum D1-4-1, and the rule splits on a value threshold:

• Value for duty of CAD 2,500 or less: a commercial invoice is enough, provided it shows the buyer, the seller, the price paid or payable, and an accurate description including quantity.
• Value for duty above CAD 2,500: the full Canada Customs Invoice data set is required. That can be satisfied three ways: a completed CCI (Form CI1), a commercial invoice that itself carries all the CCI data elements, or a commercial invoice plus a CI1 supplying whatever the invoice is missing.

The CCI data set is what you would expect a border agency to want, and it is longer than most exporters’ standard invoice template: vendor and purchaser with full addresses, consignee where different, date of sale, country of origin, currency of settlement, quantity and detailed description per line, unit and total prices, packaging details and weights, terms of delivery and payment, and transportation details. The practical failure mode is not exotic: a supplier’s system prints a commercial invoice that covers perhaps ten of the required elements, nobody adds the CI1 to fill the gap, and the file is incomplete at release.

Accounting: the CAD replaced the B3

Accounting is where CARM changed the paperwork itself. The Commercial Accounting Declaration (CAD) replaced both the B3 customs coding form and the B2 adjustment request. It is filed through the CARM portal or by EDI, the system calculates duties and taxes from what is declared, and corrections and adjustments are made as new versions of the same CAD rather than as separate adjustment filings.

For document workflows, the significant word is “data.” The CAD is not a form you photocopy; it is a structured declaration built from the same fields that live on the invoice, the cargo control document, and the certificate of origin. Whatever quality problems exist in those source documents flow straight into the declaration that assesses the money.

Claiming CUSMA preference: the certification of origin

Duty-free treatment under the Canada-United States-Mexico Agreement is claimed, not automatic, and the claim rests on a certification of origin. The CBSA’s certification requirements follow CUSMA’s Annex 5-A: there is no prescribed form, and the certification is valid on an invoice or any other document as long as it carries the nine minimum data elements - who is certifying (importer, exporter, or producer), the certifier’s details, the exporter, the producer, the importer, a description with the HS tariff classification, the origin criterion the goods qualify under, the blanket period where one certification covers multiple shipments, and a signature and date with the required certifying statement.

Two practical notes. First, the certification can be completed by the exporter, the producer, or the importer, which surprises teams used to older regimes where only the exporter certified. Second, there is a low-value exemption: the CBSA does not require a certification of origin to claim preferential treatment where the value for duty does not exceed CAD 3,300, with certain conditions. The claim still has to be true, and origin still has to be supportable if asked; what disappears under the threshold is the certification document itself.

The supporting cast

Around the required core travel the documents that make the file coherent: the bill of lading or air waybill matching the cargo control data, a packing list reconciling the invoice to the physical freight, and any non-preferential certificate of origin the goods or the buyer require. None of these is a CBSA filing in itself, but border review reads the file as a set, and a file that disagrees with itself invites exactly the scrutiny the paperwork exists to avoid. We covered the specific cross-checks in Bill of Lading vs. Packing List vs. Commercial Invoice: What Customs Actually Checks.

Where the files actually fail

Put the requirements side by side and a pattern shows: almost every one of them is a data completeness problem wearing a legal name. The commercial invoice below CAD 2,500 fails on a missing quantity or an ambiguous description. The CCI fails on the data elements the supplier’s template never printed. The CAD inherits whatever the invoice got wrong. The CUSMA certification fails on a missing origin criterion or an HS code that does not match the invoice line. These are checkable conditions, and checking them at intake costs minutes; discovering them at the border costs the release.

That checking layer is what CargoLint automates: it reads the invoice, packing list, bill of lading, and certificate of origin, extracts every field with a confidence score, flags what is missing or uncertain, and cross-checks the set for the contradictions border review looks for. The fastest way to see it against your own paperwork is to run a recent shipment through the free trial.

CargoLint provides document automation software, not customs brokerage or legal advice. Requirements summarized here are the CBSA’s, linked at each point; they change, they carry conditions, and how they apply to specific goods is a question for your broker or counsel.