IL State Tax — Gasoline
70.4¢
per gallon · 48.3¢ MFT + 21¢ prepaid sales tax + 1.1¢ UST/EIF
IL State Tax — Diesel
77.9¢
per gallon · 55.8¢ MFT + 21¢ prepaid sales tax + 1.1¢ UST/EIF
All-in Chicago tax burden
$1.094
fed + state + county + city
IL gallons sold (2024)
5.8B
74% gasoline · 26% diesel
State gasoline tax — total state rate (¢/gal), Midwest states
Includes all state excise + fees + prepaid sales tax components. Federal excise of 18.4¢/gal applies equally to all states and is not shown here. Illinois rate as of July 2026; other states as of January 2026.
What's inside every Chicago gallon of gasoline?
Based on a $3.00 base price. Hover each bar segment to see the component detail.
Total tax burden: $1.094 per gallon
Chicago represents the highest total tax burden in Illinois due to stacked city, county, and state levies.
Illinois biofuel sales tax incentives
| Blend | Tax treatment | Expires |
|---|---|---|
| E15 (gasohol) | 6.25% sales tax applies to only 90% of proceeds — effective ~5.6% rate | Dec 2028 |
| E20–E50 (mid-range) | 6.25% applies to only 80% of proceeds — effective ~5% rate | Dec 2028 |
| E51–E83 | Fully exempt from sales and use tax | Dec 2028 |
| B10+ biodiesel (winter) | Exempt Dec 1 – Mar 31 each year | Nov 2030 |
| B13+ biodiesel (Apr–Nov) | Exempt Apr–Nov 2024. Threshold rises: B16 in 2025, B19 from April 2026 onward | Nov 2030 |
National ranking — top 10 highest state gasoline tax rates (¢/gal)
Illinois ranks #2 nationally, behind California (other states as of January 2026). The national average is 33.3¢/gal — Illinois is nearly double that. Among Midwest states, Illinois is the highest by a margin of more than 12¢/gal over the next closest state.