How are LTL (Less than Truckload) Rates Calculated?

LTL freight rates are more complex than FTL because they account for shared trailer space, multiple handlings, and how your shipment "fits" with others. Unlike flat per-mile pricing, LTL uses a combination of factors to determine a per-hundredweight (CWT or "hundredweight") rate, then applies it to your shipment's billable weight.

Core calculation steps:

Determine freight class — Based on the National Motor Freight Classification (NMFC) system, your item gets assigned a class from 50 (lowest cost, densest/heaviest) to 500 (highest cost, lightest/bulkiest).

Class is influenced by:

• Density (pounds per cubic foot—higher density = lower class = lower rates).

• Stowability (how easily it stacks/stores with other freight).

• Handling (ease of loading/unloading—e.g., fragile or awkward shapes increase class).

• Liability (value per pound—higher-value items often get higher classes).

• Calculate density — Measure weight ÷ volume (cubic feet) to get pounds per cubic foot (PCF). This heavily impacts class (e.g., >50 PCF often qualifies for Class 50–70; <1 PCF might hit Class 400–500).

• Apply base rate (per CWT) — Carriers publish base rates per 100 lbs (CWT), varying by:

  • Origin/destination (zone or lane).

  • Weight breaks (e.g., lower rate per CWT for heavier shipments—500+ lbs gets discounts vs. 150 lbs).

  • Freight class.

• Multiply by billable weight — Take the actual weight (or dimensional weight if bulky), round to nearest 100 lbs if needed, and multiply by the CWT rate.

• Add surcharges & accessorials — Include fuel surcharge (percentage of base rate, tied to diesel prices), plus extras like liftgate, residential delivery, inside delivery, appointment, etc.

• Apply minimum charges — Most shipments have a minimum charge (e.g., equivalent to 300–500 lbs even if lighter) to cover handling costs.

Main factors influencing LTL rates (in rough order of impact):

• Freight class/density — Often the biggest driver; optimizing packaging for higher density can drop class and save 20–50%+.

• Weight — Heavier shipments get lower per-CWT rates (economies of scale).

• Distance/zone — Longer hauls cost more; rates jump in zones or remote areas.

• Origin/destination specifics — High-volume lanes cheaper; rural/residential adds fees.

• Market conditions — Supply/demand, fuel prices, and seasonality affect base rates and surcharges.

• Accessorials — Liftgate, notifications, and limited access locations can add hundreds.

• Negotiated discounts — Volume shippers get percentage off base rates.

Quick example (simplified):

• Shipment: 1,000 lbs, Class 100, 500-mile lane.

• Base CWT rate: $25 per 100 lbs (for that class/zone/weight break).

• Subtotal: 10 × $25 = $250.

• Fuel surcharge (20%): +$50.

• Total before accessorials: ~$300 (plus any min charge or extras).

Rates can vary widely, so accurate quotes require exact details (weight, dimensions, class, origin/dest).

Many shippers save big by reclassifying freight or consolidating to hit better weight breaks.

Need help figuring your freight class, calculating density, or comparing real LTL quotes? Send over your shipment specs—we'll crunch the numbers and show you ways to optimize!