Florida IFTA Tax Rate — 2026

How Florida IFTA tax is calculated

For every gallon of diesel your truck "burned" inside Florida during the quarter, you owe $0.4027 in IFTA tax. The number of taxable gallons isn't the gallons you bought there — it's the miles you drove inside Florida divided by your fleet's average miles-per-gallon for the whole quarter.

Your IFTA return then nets that against the Florida fuel-tax you already paid at the pump on gallons purchased inside the state. If you ran more Florida miles than you bought Florida fuel, you owe the difference. If you bought more Florida fuel than you ran Florida miles, you get a refund or credit.

Common Florida IFTA filing questions

• Do I file IFTA in Florida if my home base is here? If your IFTA base jurisdiction is Florida, you file your quarterly return with the Florida Department of Revenue (or equivalent). Your filing covers every IFTA jurisdiction you ran in, not just Florida.
• What if I only drove a few miles through Florida? Every IFTA mile counts, even if you only crossed the state. Track them on your trip sheet or ELD report — you'll owe (or get refunded) Florida's share whether you bought fuel here or not.
• What if Florida fuel is cheaper than the IFTA tax? The IFTA rate above is what you owe per gallon "consumed" in Florida. The pump price already includes Florida's state fuel tax — that's what gets credited on your return. If you bought all your fuel in a low-tax state and drove all your miles in Florida, you'll owe the full Florida rate on those gallons at filing time.

Florida IFTA filing deadlines

IFTA returns are due quarterly across all 48 contiguous U.S. states, including Florida:

• Q1 (Jan–Mar): due April 30
• Q2 (Apr–Jun): due July 31
• Q3 (Jul–Sep): due October 31
• Q4 (Oct–Dec): due January 31

Late filings collect penalties even if you owe nothing — some states charge $50 minimum per late return. File on time even if your net due is $0.