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Starting October 1: Some business services are now subject to retail sales tax, as required by state law, ESSB 5814. When you buy these services, vendors should add sales tax to your bill. If you sell these services, you should begin collecting retail sales tax. Learn more about Services newly subject to retail sales tax.
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.