Q4 2026 IFTA diesel rate
Wyoming IFTA fuel tax rate, Q4 2026
WYWyoming · diesel$0.2400/gal
Unchanged from Q3 2026.
Checked 2026-10-14 against dot.state.wy.us, Wyoming's own published rate.
Calculate Wyoming for Q4 2026Free. No account.
What you owe Wyoming
IFTA apportions your fuel by miles. Divide total miles by total gallons for fleet MPG, turn your Wyoming miles into taxable gallons, subtract the tax-paid gallons you bought in Wyoming, and multiply by $0.2400.
Example: 1,000 miles in Wyoming at 6.5 MPG is 153.85 taxable gallons. With 100 tax-paid gallons bought there, 53.85 × $0.2400 = $12.92 owed to Wyoming.
This rate is for diesel, Q4 2026. You still file with your base jurisdiction; keep your trip records and receipts.