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Motor vehicle fuel tax rates
The motor vehicle fuel tax rates are used to calculate the motor vehicle fuel deduction under the Retailing Business and Occupation (B&O) tax classification. To compute the deduction, multiply the number of gallons by the combined state and federal tax rate.
Gasoline
| Date | State Rate/Gallon | Federal Rate/Gallon | Combined State & Federal Tax Rate/Gallon |
|---|---|---|---|
| Jul 1, 2025 - Jun 30, 2026 | 0.554 | 0.184 | 0.738 |
| Jul 1, 2016 - Jun 30, 2025 | 0.494 | 0.184 | 0.678 |
Diesel
| Date | State Rate/Gallon | Federal Rate/Gallon | Combined State & Federal Tax Rate/Gallon |
|---|---|---|---|
| Jul 1, 2025 - Jun 30, 2026 | 0.584 | 0.244 | 0.828 |
| Jul 1, 2016 - Jun 30, 2025 | 0.494 | 0.244 | 0.738 |
For more information about fuel tax, visit the Department of Licensing's web site.
