A separate per-mile amount that moves with diesel prices.
Most surcharges key off the weekly national diesel average published by the Energy Information Administration, with a peg price and a step per cent above it.
Surcharge schedules vary between brokers and are not standardised. Two loads at the same linehaul can pay differently once fuel is added, so compare all-in.
Related
Inteleri works out what a load actually pays you once things like this land. See how it works.