Fuel Surcharges Explained: How to Handle Fuel in Freight Quotes

Fuel is one of the largest costs for a trucking company, and diesel prices move every week. Fuel surcharges let carriers, brokers and shippers share that risk fairly. Getting fuel right in your quotes protects your margin.

All-in vs. linehaul plus fuel

There are two ways to present a truckload rate:

• All-in rate: one number that includes fuel. Common for spot quotes because it's simple to accept.
• Linehaul + fuel surcharge (FSC): a base rate plus a fuel charge that changes with diesel prices. Common for contract freight that runs for months.

Whichever you use, be explicit. "All-in" should mean fuel is included; if not, state the surcharge separately.

How a per-mile fuel surcharge works

Most fuel surcharge programs follow the same logic:

1. Pick a reference price: the weekly US average on-highway diesel price published by the U.S. Energy Information Administration (EIA) is the most common public reference.
2. Agree a base price: the diesel price at which the surcharge is zero. Anything above it triggers a surcharge.
3. Assume a fuel efficiency: miles per gallon for a typical truck, agreed between the parties.
4. Calculate per mile:

Fuel surcharge per mile = (Current diesel price − Base price) ÷ MPG

5. Multiply by loaded miles for the load.

Example with illustrative numbers

• Current weekly diesel price: $3.80 per gallon
• Agreed base price: $1.20 per gallon
• Assumed efficiency: 6 MPG
• Surcharge per mile: ($3.80 − $1.20) ÷ 6 ≈ $0.43
• For a 780-mile load: about $338 in fuel surcharge

Some shippers use their own published tables instead of a formula. Always use the program specified in the shipper's contract.

Fuel in spot quotes

For spot freight, quote all-in. The market rate data you use may be shown with fuel included or as linehaul only. Make sure you know which, and convert before you quote. Read how to use DAT RateView data.

Fuel in contract pricing

For contract lanes, a fuel surcharge mechanism tied to a public weekly index protects both sides when diesel moves. Without it, a sharp rise in diesel can wipe out your margin for the rest of the contract. See spot vs. contract freight rates.

Paying carriers

Decide whether you pay carriers all-in or linehaul plus fuel, and be consistent with how you bill the shipper, so a fuel spike doesn't land entirely on your margin.

Common mistakes

• Quoting linehaul as if it were all-in
• Using last month's diesel price in a fuel calculation
• Applying a fuel surcharge on top of an all-in rate by mistake
• Forgetting reefer units also consume fuel. See equipment type pricing

Consistent fuel handling is part of protecting your margin on every load. Hopelight Quote lets you choose whether drafts show all-in rates or linehaul plus fuel, so every rep presents fuel the same way.