Fuel Charge
Our standard fuel charge calculation is tied directly to the national average price of diesel fuel as reported weekly by the Energy Information Administration of the U.S. Department of Energy ("EIA/DOE") in its Weekly Retail On-Highway Diesel Prices Index ( This index is objective, publicly available and widely recognized in the trucking and transportation industries. Tying our fuel charge to this index will ensure that you, our valued customer, will pay a fuel charge that is currently adjusted, easy to calculate, and equitable to you and the Company.

Determination of the Fuel Charge Amount
The fuel charge that is included in a customer's invoice is determined by applying the percentage from the TFI Fuel Charge Table  to the invoice charges (excluding tax).

The EIA/DOE average is published each Monday. Each month a monthly average price will be determined and a corresponding fuel charge rate established. All invoices created during the upcoming month will be assessed a fuel charge at that rate.  The TFI Fuel Charge Table shows what the fuel charge, as a percentage of your monthly or other periodic invoice charges would be.

Not a Governmental Tax; Future Changes
The fuel charge is not a tax or charge imposed by or remitted to any governmental or regulatory agency; it is our charge. The fuel charge percentages may be changed at the discretion of Thermo Fluids. To the extent required by your applicable customer service terms, your consent to the assessment of the fuel charge, and any changes to such charge, is effective upon your payment.


  1. Why do you charge a fuel charge component? 
    The fluctuation in the cost of diesel fuel today makes it difficult for our Company to recover fuel expenses to generate a fair rate of return. Our vehicles that run on diesel get only approximately 8 miles per gallon.  In addition, third party fleet and rail providers that are contracted to transport our products charge us a fuel charge or an increased price for added fuel costs.
  2. If the price of fuel goes down, will my fuel charge component go down too?
    Yes, because the charge is tied to EIA/DOE index, if the EIA/DOE's national average diesel price falls, your fuel charge component will come down as well. This information is updated monthly.
  3. How can I access the EIA/DOE Weekly Retail On-Highway Diesel Prices Index?
    Here is the link to the EIA/DOE. This site is updated every Monday evening.
  4. If I have any additional questions regarding fuel charge, who can I talk to? 
    You should call 1-800-350-7565 and ask to speak to the Account Manager serving your area.