State Tax Day - Current, S.14, Illinois—Sales and Use Tax: July 1 to December 31, 2026 Prepaid Motor Fuel Tax Rates, (Jun 10, 2026)
Organizations Mentioned:Illinois Department of Revenue
The Illinois prepaid sales tax rates for motor fuel during the period of July 1 to December 31, 2026 are:
17¢ per gallon for mid-range ethanol blends;
19¢ per gallon for gasohol (E15 only); and
21¢ per gallon for all other motor fuels, including diesel fuel containing less than 10% biodiesel or renewable diesel and gasoline containing less than 15% denatured ethanol.
Prepaid sales tax does not apply to motor fuel that is fully exempt, like majority blended ethanol and certain biodiesel or renewable diesel blends.
Prepaid Motor Fuel Tax Rates, Illinois Department of Revenue, June 2026, ¶404-254
Other References:
Explanations at¶61-230