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Last updated: May 2026 · Utah IFTA rates current for Q1–Q4 2026
Utah · 31.9¢/gal · Average Tax State

Utah IFTA Calculator 2026 — Diesel Tax Rate & Filing

Utah diesel tax rate is 31.9¢ per gallon for 2026. Calculate your IFTA fuel tax for Utah routes and compare neighboring state rates.

Calculate Your Utah IFTA Tax

Utah IFTA Rates & Trucking Overview 2026

Utah at 31.9¢/gal (variable, indexed to wholesale price) sits slightly above average. Salt Lake City is the Mountain West's largest freight market and logistics hub, with same-day reach to Las Vegas, Boise, and Denver. Utah's central position in the Intermountain West makes it a key distribution state for the region. The I-15 corridor is among the highest-truck-volume routes in the Mountain West.

Major Utah Trucking Routes

I-15 (Las Vegas NV–Salt Lake City–Idaho Falls ID, primary north-south), I-80 (Reno NV–Salt Lake City–Cheyenne WY, primary east-west), I-70 (Grand Junction CO–Green River, scenic east connector), I-84 (Portland OR–Boise ID–Utah), US-6 (Price–Spanish Fork, coal country)

Nevada to the west (27.8¢) and Colorado (32.5¢) and Wyoming (24.0¢) to the east offer better rates for border fuel stops. Nevada is the most practical: I-15 southbound toward Las Vegas crosses into NV at Mesquite, NV where fuel is meaningfully cheaper. Idaho to the north (32.0¢) is nearly identical to Utah. The Wasatch Front (Salt Lake–Ogden–Provo) concentrates the state's freight activity.

Utah IFTA — Frequently Asked Questions

What is Utah's IFTA diesel tax rate in 2026?
Utah's diesel rate is approximately 31.9¢/gal — indexed to wholesale fuel prices. Colorado (32.5¢) to the east and Wyoming (24.0¢) to the north offer the best savings at Utah's borders.
Who administers IFTA for Utah-based carriers?
Utah IFTA is administered by the Utah State Tax Commission. File quarterly at tax.utah.gov/business/other-taxes/ifta-sfu. Utah also has a weight fee for vehicles over 12,001 lbs registered in the state.
What freight industries are in Utah?
Retail distribution (Salt Lake is the Mountain West's DC hub), mining (copper from Kennecott/Rio Tinto — one of the world's largest open-pit copper mines), technology (Silicon Slopes tech corridor generating high-value freight), coal from the Wasatch Plateau via US-6, and aerospace components from Hill AFB suppliers.
What are the challenges of I-80 through the Salt Flats?
I-80 through the Bonneville Salt Flats and across Nevada is one of the most desolate stretches of US highway — long distances between fuel and services. Crosswinds can be severe. In summer, heat shimmer reduces visibility and tire blowout risk increases. Plan fuel stops carefully at Wendover and Wells, NV.
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Utah Quick Reference

Utah diesel tax 2026→31.9¢/gal
Fuel strategy→⚠️ Average rate
Colorado 20.5 ✅→¢
Wyoming→24.0¢ ✅
Nevada→27.8¢ ✅
Idaho→32.0¢ ≈

Fueling tip: Colorado at 32.5¢ saves 11.4¢/gal. Wyoming at 24.0¢ saves 7.9¢/gal. Nevada at 27.8¢ saves 4.1¢/gal. Fill before entering Utah from any of these directions if possible.

Need full IFTA across all 48 states? Use the IFTA Fuel Tax Calculator.

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