Illinois Fuel Tax
Illinois charges about 66.4 cents per gallon in state taxes and fees on gasoline and 73.9 cents on diesel. That ranks 2 of 51 states (including DC) for gasoline tax, where 1 is the highest. The figure is 33 cents above the national average of 33.4 cents.
State gasoline tax
66.4¢ / gal
Ranks 2 of 51 (1 = highest)
State diesel tax
73.9¢ / gal
Ranks 3 of 51 (1 = highest)
Total tax per gallon, with the federal rate
| Fuel | State | Federal | Total |
|---|---|---|---|
| Gasoline | 66.4¢ | 18.4¢ | 84.8¢ |
| Diesel | 73.9¢ | 24.4¢ | 98.3¢ |
Includes the state sales tax on fuel; a July 2026 inflation bump was suspended six months.
Basis: Total state taxes and fees: the state excise plus statewide fees and, where a state levies it, sales or gross-receipts tax on fuel. Excludes the federal tax and local/county taxes. Snapshot as of July 2026. Rates change and several states
re-index each year, so confirm the current figure with the Illinois department of revenue
before relying on it.
Nearby on the gas-tax ranking
- California 73.1¢ gas · 89.5¢ diesel
- Washington 65¢ gas · 71¢ diesel
- Pennsylvania 58.7¢ gas · 74.1¢ diesel
How fuel tax works
A fuel tax is an excise: a set number of cents on each gallon, collected whether the pump reads two dollars or five. The federal rate (18.4 cents on gasoline, 24.4 on diesel) is the same in every state and has not changed since 1993. The state rate is where the pump price diverges from one state line to the next.