Arizona diesel tax rate is 26.0¢ per gallon for 2026. Calculate your quarterly IFTA fuel tax liability for Arizona routes and compare to neighboring states.
Calculate Your Arizona IFTA Tax
Gallons consumed in Arizona→
Net taxable gallons→
Arizona tax rate (2026)→26.0¢/gal
Estimated Arizona IFTA→
Positive = amount owed to Arizona; negative = credit on your quarterly return. This is one component of your full multi-state IFTA filing.
Arizona IFTA Rates & Trucking Overview 2026
Arizona's 26.0¢/gal diesel rate makes it a solid fueling choice compared to California (62.5¢) to the west — topping off before crossing into California is one of the most common fuel strategies in trucking. Phoenix is a top-10 US freight market driven by distribution, construction materials, and its role as a Southwest logistics hub.
The Nogales port of entry is one of the busiest commercial crossings with Mexico, handling billions in agricultural and manufactured goods annually. Flagstaff on I-40 is a key overnight stop for cross-country drivers. Summer heat requires extra attention to tire pressure and cooling systems.
Arizona IFTA — Frequently Asked Questions
What is Arizona's IFTA diesel tax rate in 2026?
Arizona's diesel tax rate is 26.0¢/gal for 2026. This is well below the national average and makes Arizona one of the better fueling states in the West, especially compared to California at 62.5¢.
Who administers IFTA for Arizona-based carriers?
Arizona IFTA is administered by the Arizona Department of Transportation. File quarterly at AZTaxes.gov. Standard IFTA deadlines apply: Apr 30, Jul 31, Oct 31, Jan 31.
How much do I save fueling in Arizona vs. California?
At 36.5¢/gal difference (AZ 26.0¢ vs. CA 62.5¢), a 150-gallon fill-up saves about $54.75. This is one of the largest border differentials in the country — always maximize your fuel load before entering California from Arizona.
What are Arizona's major freight routes?
I-10 is Arizona's primary freight artery running Phoenix–Tucson–El Paso. I-40 through Flagstaff handles significant cross-country freight. Phoenix's Loop 101/202/303 belt freeways connect major warehousing and distribution centers in the West Valley.
Fueling tip: Always fuel up in Arizona before entering California. The difference between AZ (26.0¢) and CA (62.5¢) is 36.5¢/gal — that's $54.75 on a 150-gallon fill. Top off at the last stop before the CA border.