Motor fuel tax

Illinois motor fuel tax rates for July 2026 through December 2026

Illinois DOR bulletin FY 2026-23-A states the recalculated Motor Fuel Tax rates effective July 1, 2026 through December 31, 2026 after a six-month CPI adjustment suspension.

Illinois car costs Open dataset

Official source checked · 2026-07-01FY 2026-23-A, Revised Motor Fuel Tax Rates Effective July 1, 2026, through December 31, 2026. Official source

Effective date

July 1, 2026

July 1, 2026 through December 31, 2026

Status

Official source checked

Last checked 2026-07-01

Before

Illinois normally adjusts Motor Fuel Tax rates each July under the statutory CPI formula.

After

Public Act 104-0468 suspended the scheduled July 2026 CPI adjustment for six months.

Official amount text

Gasoline 48.3 cents/gallon; diesel 55.8 cents/gallon.

CarOutlay keeps the amount as source-cited text rather than a calculator promise. Confirm the current rule with the agency before a purchase, registration, renewal, or tax decision.

Official source