Alabama IFTA Fuel Tax Rate, 4th quarter 2026

Diesel, October to December 2026

$0.3100per gallon

C$0.1149 per litreSince Q3 2026: no change

Example: 1,000 miles in Alabama at 6.5 mpg burns about 154 gallons, so you owe Alabama about $47.69 in fuel tax for those miles. Tax you paid at the pump in Alabama is credited on the return.

Q3 2026 IFTA return due October 31, 2026 · Alabama

Your Q3 2026 IFTA return is due October 31, 2026

File late and the penalty is $50 or 10% of the tax owed, whichever is more, plus interest. Send us your miles and fuel records and a tax professional files it for $79.

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Alabama rates for both quarters

Fuel	Q4 2026 (now)	Q3 2026 (return due October 31, 2026)
Diesel	$0.3100C$0.1149/L	$0.3100C$0.1145/L
Gasoline	$0.3000C$0.1112/L	$0.3000C$0.1109/L

Alabama's notes on the IFTA matrix

The Rebuild Alabama Act - Levies an incremental excise tax increase on gasoline and diesel fuel beginning September 1, 2019. The rate increases by $0.06 on 9/1/19, $0.02 on 10/1/2020 and $0.02 on 10/1/2021. Beginning October 1, 2023, and July 1 every other year thereafter, index of $0.01 per gallon increase or decrease based upon National Highway Construction Cost Index. New distribution for additional excise tax. Floor stocks tax return due on the last day of the third month following the tax increase. Due date for TXT returns changed from the 22nd to the 20th. ADOR required to notify taxpayer of rate change on or before March 1. Maximum bond for suppliers is $3,000,000 beginning 9/1/2019. Effective January 1, 2020, an annual license tax and registration fee is imposed on each battery electric vehicle ($200) and each plug-in hybrid electric vehicle ($100) operated on Alabama public highways. Beginning July 1, 2023 and every fourth year thereafter, the additional license tax and registration fee shall increase by three dollars ($3). In no case shall the battery electric vehicle fee be reduced to less than $150 and the plug-in hybrid electric vehicle fee be reduced to less than $75.

Diesel prices in Alabama this week Truck stops and diesel in Alabama

Source: IFTA, Inc. fuel tax rate matrix, last updated by IFTA, Inc. on 11/10/26. The 4th quarter 2026 matrix is not final until December 4, 2026. States can still send changes; see IFTA's late rate notices. Your base state's return is what counts; check its instructions before you file.

Alabama carriers: we file your IFTA return

Your 3rd quarter 2026 return is due October 31, 2026. $79 a quarter, or $300 for a full year. Fuel tax you owe is paid to your base state and isn't included.

Send your ELD miles report or trip sheets and your fuel card report or receipts
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You approve the return before it is filed and get a copy for your records
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Common questions

What is the Alabama IFTA diesel tax rate for the 4th quarter 2026?

$0.3100 per gallon, for fuel used October to December 2026. It is the same as in Q3 2026.

What Alabama rate goes on my 3rd quarter 2026 return?

$0.3100 per gallon for diesel. That return covers July to September 2026 and is due October 31, 2026.

What is a surcharge line?

Some states (for example Kentucky and Virginia) add a separate surcharge on fuel used in their state. It is listed as its own line on the IFTA matrix and on the return. The diesel totals on these pages add the surcharge to the base rate.

Why are Canadian rates shown per litre and in two currencies?

IFTA lists every rate both in U.S. dollars per U.S. gallon and in Canadian dollars per litre, using one exchange rate per quarter. A U.S.-based carrier files in gallons and U.S. dollars; a Canadian-based carrier files in litres and Canadian dollars.

Do I owe tax twice if I buy fuel in one state and drive in another?

No. You owe each state tax on the fuel you burned there (miles there ÷ your fleet MPG × that state's rate). The tax you already paid at the pump is credited. The IFTA return adds it up: you pay the states you under-paid and get credit from the ones you over-paid.