Import Guide · Canada

HS Codes in Canada — How to Classify Your Imports

Tariff classification — assigning the right Harmonized System (HS) code — helps determine the duty rate and can affect taxes, trade measures, and reporting requirements for goods you import into Canada. This guide explains how Canada’s tariff classification works, how to find the right code, and how to reduce the risk of costly misclassification — with in-house customs support from RRA Group if you’d rather have it handled for you.

Talk to Our Customs Team Customs Services

CBSA Customs Tariff10-Digit ClassificationCARM-ReadyIn-House Customs Clearance

The basics

What Is an HS Code?

The Harmonized System is an international product-classification standard maintained by the World Customs Organization (WCO) and used by customs administrations worldwide. Customs authorities use it as the basis for duty rates and to apply related taxes, trade measures, and controls. Canada builds on the international 6-digit HS code to create a 10-digit classification number in its Customs Tariff.

Structure

How Canada’s 10-Digit Customs Tariff Code Works

Internationally, the Harmonized System is standardized at the six-digit level; Canada adds four more digits for duty detail and statistics. Classification practices can still differ by jurisdiction.

Digits	Level	What it identifies
1–2	Chapter	Broad product category (e.g. 72 = iron & steel)
3–4	Heading	Product group within the chapter
5–6	Subheading	Specific product — internationally standardized (HS6)
7–8	Tariff item	Canadian duty rate detail (Customs Tariff)
9–10	Statistical suffix	Canada’s statistical breakdown for reporting

Finding your code

How to Find Your HS Code

Identify the product preciselyMaterial, composition, function, and how it’s used — not just its common name.
Search the CBSA Customs TariffWork down from chapter to heading to subheading; for exports use the Canadian Export Classification.
Read the section & chapter notesThese legal notes decide borderline cases and can override first impressions.
Confirm tariff treatment & any controlsCheck the applicable tariff treatment and whether other government agencies regulate the goods.
Verify with a customs professionalA second set of eyes helps prevent costly errors — especially for new products, sets, and kits.

Why it matters

Why Correct Classification Matters

Duty & tax

Right Amounts Owed

The tariff item sets the starting duty rate and affects tax treatment — the wrong code can mean over- or under-paying, and underpayment may result in reassessment, interest, and, depending on the circumstances, penalties.

Compliance

Avoid CBSA Penalties

Misclassification can trigger CBSA reassessment and, in some cases, AMPS penalties. Accurate classification supports compliance — alongside valuation, origin, and marking requirements.

CARM

Accurate CARM Records

Importers are responsible for the accuracy of their accounting information, including classification. Correct codes support accurate declarations, duty calculations, and CARM records.

The full picture

Classification Is Only One Part of the Duty Calculation

The tariff item provides the starting duty rate, but the amount actually payable can also depend on the country of origin, the applicable tariff treatment or trade agreement (and any proof-of-origin requirements), the value for duty, and any applicable surtax, trade-remedy measure under the Special Import Measures Act, or tariff-rate quota. For difficult or high-value goods, importers may also request an advance ruling from CBSA for added certainty.

Watch-outs

Common HS Classification Mistakes

Most classification errors come from a handful of habits: classifying by common name instead of material or use, ignoring the binding section and chapter notes, copying a supplier’s foreign national code (only the first 6 digits are shared internationally), and missing the special rules for sets, kits, and parts. When in doubt, get it checked.

Done for you

Let RRA Handle Classification for You

If you’d rather not wrestle with the tariff, our in-house customs team can review the classification, prepare the documentation, and clear your goods — CARM-ready, within our group, with no separate broker handoff. Final determinations remain subject to CBSA and other government agencies.

FAQ

HS Codes in Canada — FAQ

Ten. The first 6 digits are the internationally standardized Harmonized System (HS) code; digits 7–8 are the Canadian tariff item and digits 9–10 are a statistical suffix set out in the CBSA Customs Tariff.

Use the CBSA Customs Tariff for imports and the Canadian Export Classification for exports. When in doubt, confirm with a customs professional — misclassification is costly.

An incorrect code can mean the wrong duty and taxes, shipment delays, CBSA reassessment, and possible AMPS penalties. Careful classification reduces these risks.

Yes — for difficult or high-value goods, importers can request an advance ruling from CBSA. Our customs team can review the classification question and discuss whether an advance ruling may be appropriate.

Yes — tariff classification and clearance are handled in-house within our group and are CARM-ready. Send your product details and we’ll help classify and clear them. Final determinations remain subject to CBSA.

The Harmonized System is standardized internationally at the six-digit level among countries and customs territories using the HS. National classifications add further digits — Canada’s 7th to 10th — and classification practices can still differ by jurisdiction.

Yes. The WCO updates the Harmonized System periodically and Canada updates its Customs Tariff; always classify against the current tariff.

Need Your Imports Classified and Cleared?

Send us the product description, composition, function, country of origin, and any technical literature. Our customs team can review the classification and flag anything else required. Final determinations remain subject to CBSA.

Request a Freight Quote