Wyoming Gas Tax Calculator
Wyoming charges 24.0¢/gal on gasoline and 24.0¢/gal on diesel (all state taxes and fees). Combined with the federal tax, drivers in Wyoming pay 42.5¢/gal total on gasoline. The base excise rate is 23.0¢/gal.
WY gasoline (combined)
24.0¢
excise: 23.0¢
WY diesel (combined)
24.0¢
excise: 23.0¢
Federal gasoline tax
18.5¢
18.4¢ excise + 0.1¢ LUST
Combined (gas + federal)
42.5¢
Includes excise + all state fees and surcharges (24.0¢/gal).
Tax on 15 gallons of gasoline in Wyoming(all fees)
Federal tax
$2.77
Wyoming tax
$3.60
Total tax
$6.38
This calculator is for informational purposes only and does not constitute tax advice. Consult a qualified tax professional for your specific situation. Rates last verified June 2026.
Verify rates on Wyoming Department of Transportation — Current Fuel Tax RatesGas tax per fill-up in Wyoming
State column uses the combined rate (24.0¢/gal, all fees). Excise-only rate is 23.0¢/gal.
| Tank size | State tax | Federal tax | Total tax |
|---|---|---|---|
| 10 gallons | $2.40 | $1.85 | $4.25 |
| 12 gallons | $2.88 | $2.22 | $5.10 |
| 15 gallons | $3.60 | $2.77 | $6.38 |
| 18 gallons | $4.32 | $3.33 | $7.65 |
| 20 gallons | $4.80 | $3.70 | $8.50 |
| 25 gallons | $6.00 | $4.63 | $10.63 |
| 30 gallons | $7.20 | $5.55 | $12.75 |
Gasoline only. State tax uses combined rate (all fees). Federal includes 18.4¢ excise + 0.1¢ LUST fee.
Wyoming note: Excise rate reflects the pure statutory base License Tax component under W.S. § 39-17-104 and 39-17-204. The combined rate tracks the total benchmark published by the Tax Foundation, which appends the state's structural 1.00-cent environmental cleanup tax used to fund remedial responses for leaking underground storage tanks.