Q4 2026 IFTA diesel rate

Alabama IFTA fuel tax rate, Q4 2026

ALAlabama · diesel$0.3100/gal

Unchanged from Q3 2026.

Checked 2026-10-14 against revenue.alabama.gov, Alabama's own published rate.

Calculate Alabama for Q4 2026Free. No account.

What you owe Alabama

IFTA apportions your fuel by miles. Divide total miles by total gallons for fleet MPG, turn your Alabama miles into taxable gallons, subtract the tax-paid gallons you bought in Alabama, and multiply by $0.3100.

Example: 1,000 miles in Alabama at 6.5 MPG is 153.85 taxable gallons. With 100 tax-paid gallons bought there, 53.85 × $0.3100 = $16.69 owed to Alabama.

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