Illinois DOR Updates Motor Fuel Use Tax Rates for IFTA Licensees Starting 2026

The Illinois Department of Revenue (DOR) published an informational bulletin announcing changes to the Motor Fuel Use Tax rates for International Fuel Tax Agreement (IFTA) Licensees, effective from Jan. 1, 2026, through June 30, 2026. The bulletin details the updated tax rates for various fuel types, including diesel at 73.8¢ per gallon, gasoline at 65.3¢ per gallon, LPG at 72.0¢ per DGE, LNG at 70.2¢ per DGE, and CNG at 59.8¢ per GGE. The rates are calculated by combining Part A rates, established by the Motor Fuel Tax Law, and Part B rates, determined using the average selling price of ...