Florida IFTA Fuel Tax Rate, 4th quarter 2026

Diesel, October to December 2026

$0.4097per gallon

C$0.1517 per litreSince Q3 2026: no change

Example: 1,000 miles in Florida at 6.5 mpg burns about 154 gallons, so you owe Florida about $63.03 in fuel tax for those miles. Tax you paid at the pump in Florida is credited on the return.

Q3 2026 IFTA return due October 31, 2026 · Florida

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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Florida rates for both quarters

Fuel	Q4 2026 (now)	Q3 2026 (return due October 31, 2026)
Diesel	$0.4097C$0.1517/L	$0.4097C$0.1513/L
Gasoline	$0.4110C$0.1523/L	$0.4110C$0.1519/L

Florida's notes on the IFTA matrix

Effective July 1, 2018, the current exemption of natural gas fuel (LNG and CNG) from the taxes imposed by Chapters 206 and 212, F.S., was extended through December 31, 2022. Governor Ron DeSantis has signed into law (HB 7071) a one-month Fuel Tax Holiday. All motor carriers who are licensed with the International Fuel Tax Association (IFTA), traveling in Florida, and purchasing gasoline products will see a reduced tax rate from October 1, 2022, through October 31, 2022. The reduced tax rate does not apply to Diesel. IFTA returns are still required to be filed for the quarter that includes this Tax Holiday. All miles traveled and fuel purchases must be reported on IFTA returns to accurately reflect miles per gallon (MPG) for the period. Between October 1 and October 31, 2022, Gasoline and Gasohol filers should report all total/taxable miles traveled and tax paid fuel gallons purchased in Florida for the Tax Holiday. Please use the following instructions below for reporting activity from October 1, 2022, through October 31, 2022: There will be a split tax rate for the 4th quarter of 2022 for Gasoline and Gasohol- FL will be used for the correct tax rate for 10/01/2022 – 10/31/2022 FL1 will be used for the correct tax rate for 11/01/2022 – 12/31/2022

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

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.

Florida 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 Florida IFTA diesel tax rate for the 4th quarter 2026?

$0.4097 per gallon, for fuel used October to December 2026. It is the same as in Q3 2026.

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

$0.4097 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.