CSXT HDF Fuel Index Rate Adjustment Update for November 1, 2025

Released: October 27, 2025

Dear CSX Transportation Customer,

Following is the CSX Transportation HDF Fuel Index Rate Adjustment (8661) amount effective November 1, 2025.

CSXT HDF/Mileage Based Fuel Index Rate Adjustment (8661)

The highway diesel fuel/mileage based fuel index rate adjustment is published in CSXT 8661 and applies to all line haul freight rates and charges set forth in contracts, and other pricing documents that reference CSXT Publication 8661 dated on or after April 23, 2007.

The CSXT HDF/mileage based fuel index rate adjustment of 44 cents per mile, which became effective October 1, 2025, will remain at 44 cents per mile for shipments having a bill of lading dated on or after November 1, 2025.

Following are the 8661 CSXT HDF/mileage based fuel index rate adjustments:

39 cents per mile effective January 1, 2025
38 cents per mile effective February 1, 2025
41 cents per mile effective March 1, 2025
42 cents per mile effective April 1, 2025
40 cents per mile effective May 1, 2025
40 cents per mile effective June 1, 2025
38 cents per mile effective July 1, 2025
40 cents per mile effective August 1, 2025
45 cents per mile effective September 1, 2025
44 cents per mile effective October 1, 2025
44 cents per mile effective November 1, 2025

The fuel index rate adjustment (contract rates - 8661) amount is based on the "HDF Average Price" of 374.8 cents per gallon for the calendar month of September 2025. The "HDF Average Price" is on U. S. No. 2 Diesel Retail Sales by All Sellers, as determined and published by the U. S. Department of Energy, Energy Information Administration at www.eia.doe.gov.

Please address any questions you may have to your CSXT Sales Manager.