Importer Record-Keeping (Canada): What Documents Must You Keep?

Importer Record-Keeping (Canada) The obligation of importers, including non-resident importers, to maintain prescribed customs records and make them available as required. This duty covers the creation, retention and provision of documents that support tariff classification, valuation, origin, and accounting for goods brought into Canada.

Good record-keeping begins with knowing which documents the Canada Border Services Agency (CBSA) and related authorities expect to see. Records support the information declared on accounting documents and may be requested during a review, audit, or administrative inquiry. Examples range from commercial invoices and bills of lading to supplier contracts, packing lists, and proof-of-origin paperwork.

Core Documents Importers Should Retain

At minimum, maintain original or legible electronic copies of records that explain how you reached the values and classifications declared to CBSA.

• Commercial Invoice: Shows transaction value, seller/buyer, and item-level descriptions required for valuation and classification.
• Bill of Lading/Air Waybill: Evidence of shipment, carrier, port of loading and discharge, and shipment dates.
• Packing List: SKU-level quantities and packaging details used to reconcile physical goods and declared units.
• Purchase Orders and Contracts: Agreements that support related-party pricing, discounts, and payment terms.
• Certificates of Origin: Documents used to claim preferential tariff treatment under a free trade agreement.
• Customs Broker Records: Power-of-attorney, accounting documents (B3, eManifest summary), and broker invoices that show declarations made on your behalf.
• Technical Specifications and Tariff Classification Workpapers: Product specifications, test reports, and classifier notes that justify HS classification.

Why Each Document Matters

Customs duty, Anti-dumping/Countervailing (AD/CV) considerations, and applicable taxes all depend on accurate declaration. If CBSA questions an entry, these documents prove the declared value, classification, and origin. Missing or inconsistent records increase the risk of reassessments, penalties, seizure, or forced re-export.

Form And Format: Paper Versus Electronic Records

Canada accepts electronic records provided they are reliable, readily accessible, and retain integrity for the retention period. Keep metadata, audit trails, and a back-up strategy. When scanning paper records, ensure legibility and store them in a searchable, organized system tied to the accounting entry or B3.

How Long To Keep Records

Retention periods are set by CBSA and other regulatory bodies. In practice, importers commonly retain supporting documents for the period specified in the Customs Act and related regulations and for tax purposes — commonly six years from the end of the taxation year to which they relate. Confirm the exact period with CBSA guidance and your tax advisor, and apply longer retention when litigation or ongoing audits exist.

Practical Record Management Tips

• Labeling: Link each supporting file to the corresponding accounting entry or transaction number.
• Version Control: Keep original documents and avoid overwriting scanned copies; preserve audit trails for edits.
• Access Control: Limit who can modify records and keep a log of who accesses files during reviews.
• Broker Coordination: Ensure your customs broker shares the accounting and submission records promptly after clearance.
• Periodic Review: Schedule internal checks to ensure required fields (HS code, origin, value basis) are documented for each SKU.

What To Expect During A CBSA Review

CBSA may request records during a post-entry audit or targeted review. Expect to produce documents within a specified timeframe. The agency compares declared data to supporting records; discrepancies can lead to reassessments and penalties. Prepare a single-file package per entry or shipment to accelerate responses.

In short, the Importer Record-Keeping (Canada) obligation requires maintaining clear, linked, and accessible supporting records—commercial invoices, transport documents, origin proofs, contracts, and classification workpapers—so you can substantiate every import declaration when CBSA or other authorities request them.