Illinois Motor Fuel Tax Increases 2.68% on July 1, 2026
Summary
The Illinois Department of Revenue announces that motor fuel tax rates will increase by 2.68% effective July 1, 2026 through June 30, 2027. The annual adjustment is mandated by Section 2 of the Motor Fuel Tax Law (35 ILCS 505/2), which ties rate changes to the Consumer Price Index for All Urban Consumers. Affected parties include distributors and retailers of gasoline, diesel, gasohol, propane (LPG), compressed natural gas (CNG), and liquefied natural gas (LNG).
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What changed
The Illinois Department of Revenue published a notice confirming the annual motor fuel tax rate adjustment of 2.68%, effective July 1, 2026. The tax applies to all motor fuel sold or used in Illinois, including gasoline, diesel, gasohol, liquefied petroleum gas, compressed natural gas, and liquefied natural gas.\n\nDistributors and retailers of motor fuel should update their tax calculation systems to reflect the new rate before July 1, 2026. The rate will remain in effect through June 30, 2027, unless further adjusted. Fuel tax liability affects the cost structure of transportation and logistics operations throughout Illinois.
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Apr 28, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
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FY 2026-23, Change in the Motor Fuel Tax Rate, Effective July 1, 2026, through June 30, 2027
News – Monday, April 27, 2026 print Email Section 2 of the Motor Fuel Tax Law (35 ILCS 505/2) imposes a tax per gallon on all motor fuel (i.e., diesel fuel, gasoline, gasohol, liquefied petroleum gas (LPG, commonly known as "propane"), compressed natural gas (CNG), and liquefied natural gas (LNG)) used in motor vehicles operating on Illinois public highways and in recreational type watercraft operating on Illinois waters. The Law provides that the rate of tax will be increased annually on July 1 of each year by an amount equal to the percentage increase, if any, in the Consumer Price Index for All Urban Consumers for all items published by the United States Department of Labor for the 12 months ending in March of each year, rounded to the nearest one-tenth of one cent. The percentage increase for July 1, 2026, is 2.68% (.0268).
See Informational Bulletin FY 2026-23, Change in the Motor Fuel Tax Rate, Effective July 1, 2026, through June 30, 2027 for more information.
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