Freight class is a transport-pricing concept used in relevant less-than-truckload (LTL) systems, especially in the United States. It is different from an HS-based customs tariff code. Canadian businesses shipping across the border should know which classification applies to carrier rating and which applies to customs.
What a freight class describes
In the applicable LTL rating framework, commodities are assigned freight classes using criteria that can involve density, handling, stowability and liability. A shipment’s physical characteristics and commodity description influence the classification. The specific class system and tariff terms depend on the carrier and market involved.
Freight class is not an HS code
A freight class is used for transport rating; an HS or Canadian tariff code serves a customs-classification purpose. The same product can have a customs tariff classification and a separate freight rating description. Substituting one for the other can produce incorrect quotations or customs documents.
Dimensions and packaging matter
Pallet footprint, stacked height, weight, packaging and special handling can affect how a carrier quotes or accepts LTL freight. Provide measurements for the loaded pallet—not only the item carton—and disclose whether it can be stacked or requires special equipment. Rate differences may arise when the actual freight varies from the description.
Verify the applicable carrier rules
NMFC-based classification and other density-based programs may differ from one carrier contract to another. Before quoting, ask which tariff or classification method applies and whether the carrier requires an NMFC code. Avoid assuming that every Canadian domestic LTL movement uses exactly the same rating scheme.
Measure the actual handling unit
Collect pallet length, width and height at the maximum outside points, total loaded weight, commodity description and packaging details. In NMFC-based rating, density can be important, while liability, handling and stowability may also affect classification. The updated NMFC framework introduced changes effective July 19, 2025, so classification information copied from an older rate sheet may be obsolete.
A machine-parts supplier might ship a short dense pallet one month and an unusually tall pallet the next. Even if the goods are similar, the carrier's applicable rating can change because the loaded dimensions differ. Confirm whether the carrier actually uses NMFC and which tariff exceptions apply. Keep freight class fields separate from the Canadian ten-digit customs classification number in the shipping system.
Practical checklist
- Record pallet dimensions and actual weight.
- Describe the commodity and packaging accurately.
- Check the carrier’s freight class or density policy.
- Do not confuse freight class with a customs HS code.
An example in practice
A company shipping boxed machine parts to a US customer finds that its pallet height and commodity description change the LTL quotation. Its logistics team verifies the rating details before booking.
Frequently asked questions
Is freight class the same as customs classification?
No. They support different purposes.
Do all LTL carriers use identical class rules?
No. Contract terms and rating methodologies may differ.
Will the same freight class apply on every Canadian carrier?
Not necessarily. Carrier contracts and rating frameworks differ, so verify the applicable method for the lane and service.
Discuss your shipment with K Line Logistics Canada
For a freight comparison, give K Line Logistics Canada the cargo description, weight, dimensions, origin, destination, timing and required service scope so the team can discuss practical transportation options.
Contact K Line Logistics Canada