Q4 2026 IFTA diesel rate

Arizona IFTA fuel tax rate, Q4 2026

AZArizona · diesel$0.2600/gal

Unchanged from Q3 2026.

Checked 2026-10-14 against azleg.gov, Arizona's own published rate.

Calculate Arizona for Q4 2026Free. No account.

What you owe Arizona

IFTA apportions your fuel by miles. Divide total miles by total gallons for fleet MPG, turn your Arizona miles into taxable gallons, subtract the tax-paid gallons you bought in Arizona, and multiply by $0.2600.

Example: 1,000 miles in Arizona at 6.5 MPG is 153.85 taxable gallons. With 100 tax-paid gallons bought there, 53.85 × $0.2600 = $14.00 owed to Arizona.

This rate is for diesel, Q4 2026. You still file with your base jurisdiction; keep your trip records and receipts.