The Illinois Motor Fuel Use Tax, which is paid by licensees under the International Fuel Tax Agreement (IFTA), will see a change in its rates for the first half of 2026. The tax consists of two components, Part A and Part B, as defined in state law (35 ILCS 505/13a). The updated rates will be effective from January 1, 2026, through June 30, 2026, and are to be used when filing quarterly IFTA returns.
For additional details about the rate changes and their application period, interested parties are encouraged to consult the FY 2026-14 Change in the Motor Fuel Use Tax Rate, Effective January 1, 2026, through June 30, 2026 Information Bulletin.
