State Tax Day - Current, S.3, Illinois—Motor Fuel Tax: 2025 to 2026 County Rates Announced, (Apr 23, 2026)
Organizations Mentioned:Illinois Department of Revenue
Illinois announced the inflation adjusted motor fuel tax rates in DuPage, Kane, Lake, McHenry, and Will Counties, effective from July 1, 2026 to June 30, 2027. The tax rates for each gallon of fuel are:
4.9¢ in Lake County;
5.1¢ in Will County;
8.7¢ in McHenry County; and
10.0¢ in DuPage County.
Informational Bulletin FY 2026-22, Illinois Department of Revenue, April 2026, ¶404-238
Other References:
Explanations at ¶40-001