Wyoming IFTA Rates & Trucking Overview 2026
Wyoming at 24.0¢/gal is one of the lowest diesel rates in the Rocky Mountain region. Cheyenne is Wyoming's primary freight hub at the I-25/I-80 interchange and handles significant cross-country freight as one of the highest-elevation points on the I-80 corridor. Wyoming has no state income tax, making it an attractive IFTA base state for Mountain West carriers.
Major Wyoming Trucking Routes
I-80 (Salt Lake City UT–Cheyenne–Omaha NE, primary east-west), I-25 (Denver CO–Cheyenne–Casper–Montana), I-90 (South Dakota–Gillette–Buffalo–Montana), US-30 (Evanston–Rock Springs–Rawlins, secondary I-80 parallel)
Colorado at 20.5¢ to the south is slightly cheaper, and Utah at 31.9¢ to the west makes Wyoming the better fueling choice for I-80 runs. Montana to the north (28.5¢) and South Dakota (28.0¢) to the east are both more expensive. Wyoming's energy sector — coal from the Powder River Basin (largest coal producing region in the US), oil and natural gas from the Pinedale/Jonah fields — generates enormous heavy freight volume.
Wyoming IFTA — Frequently Asked Questions
What is Wyoming's IFTA diesel tax rate in 2026?
Wyoming's diesel rate is 24.0¢/gal — among the lowest in the Mountain West. Colorado (20.5¢) is the only Rocky Mountain neighbor with a better rate. Wyoming is a strong fueling value before entering Utah or Montana.
Who administers IFTA for Wyoming-based carriers?
Wyoming IFTA is administered by the DOT. File quarterly at dot.state.wy.us. Wyoming has no state income tax and low fuel rates — a combination that makes it one of the more carrier-friendly base states in the West.
What are the challenges of I-80 through Wyoming?
I-80 through southern Wyoming, particularly the Laramie–Rawlins stretch at 7,000+ feet, is one of the most dangerous winter driving routes in the US. High winds, blowing snow, and ice cause frequent closures. WYDOT closes I-80 more frequently than almost any other interstate — check wyoroad.info before dispatching.
What coal freight moves through Wyoming?
Wyoming's Powder River Basin produces over 40% of US coal. Unit coal trains (not trucks) dominate the bulk movement, but truck freight serves mines with equipment, explosives, tires, and lubricants. Casper and Gillette are the primary energy freight hubs. Permian-style oil growth in the DJ Basin near Cheyenne is adding new tanker and equipment freight.