Fuel Surcharge Example
For educational estimates only. Example only; verify actual costs and terms before booking freight.
Fuel inputs
How to use this estimate before booking
Use the result to understand a sample fuel formula before asking whether fuel is included in the all-in rate. If the broker references written fuel terms, compare them against the fuel surcharge basics guide.
The tool is most useful when a carrier is trying to understand the mechanics of a fuel clause, not when trying to predict the market. Enter the base fuel price named in the example or agreement, the diesel price you want to test, the MPG assumption, and the loaded miles used by the formula. Then compare the result with the number shown on the rate confirmation.
What this estimate does not include
This tool does not pull diesel data, calculate taxes, or decide whether a fuel term is fair. It uses only your sample inputs and does not save or send them.
It also does not decide which miles a broker or shipper will use, whether the base price is current, or whether the surcharge is already built into an all-in rate. Those details belong in the written load terms. If the confirmation only shows one total number, ask whether fuel is included before treating a surcharge as additional revenue.
Example formula context
A common teaching formula is: current diesel price minus base fuel price, divided by the MPG assumption, multiplied by the loaded miles. That produces an example surcharge tied to fuel movement above the base. Different agreements can use different regions, dates, MPG assumptions, mileage sources, rounding rules, or caps.
For carrier review, the important question is not whether this exact formula is universal. It is whether the written agreement explains which formula is being used and whether the rate confirmation matches the broker's verbal description.
What to verify in writing
Fuel language can be confusing because the same load may be discussed as linehaul plus fuel, all-in rate, or a flat gross number. Before dispatch, confirm whether the surcharge is already included, whether it will be shown as a separate line item, and whether it changes if diesel prices move before pickup.
If the formula references a public index, note the date and region used. If it references a shipper or broker table, ask where that table appears in the agreement. If the formula uses loaded miles only, do not assume deadhead fuel is covered unless the written terms say so.
The result from this page belongs beside the rate confirmation as a teaching calculation. It should not be copied into an invoice unless the load agreement actually uses the same formula and the carrier has confirmed the inputs.
Common questions
Does this tool pull the current diesel price?
No. It uses only the sample number entered on the page. If a contract or broker references an index, verify the current value at the source named in the written terms.
Is a fuel surcharge separate from the all-in rate?
It depends on the written agreement. Some rates are all-in, while others separate linehaul and fuel. The rate confirmation should make that clear before dispatch.
References and methodology
- Gasoline and Diesel Fuel Update - U.S. Energy Information Administration. Used here for: Diesel price context for educational fuel surcharge examples.LaneMath tools do not pull live EIA data. Last checked 2026-06-29.
- Estimator methodology - LaneMath Editorial Desk. Used here for: Static calculator formulas and explanatory output for educational trucking math tools.Tools run in the browser from user-entered sample numbers and do not call external APIs or store user input. Last checked 2026-06-29.