How much is Florida's gas tax?

Florida's combined state gasoline tax is roughly 36 cents per gallon, made up of the state excise, the State Comprehensive Enhanced Transportation System (SCETS) tax, and local option fuel taxes. The exact rate varies slightly by county.

Does the federal gas tax apply too?

Yes. On top of the state tax, the federal government charges 18.4 cents per gallon on gasoline (24.4 cents on diesel). This calculator adds the federal excise to the Florida rate to show your total fuel tax.

How much gas tax do I pay per year?

Multiply your annual gallons (yearly miles divided by your MPG) by the combined per-gallon tax. A driver covering 12,000 miles at 25 MPG burns 480 gallons, paying roughly 261 dollars in combined fuel taxes per year.

Why does Florida's gas tax vary by county?

Counties can levy local option fuel taxes on top of the statewide rate, so the total at the pump differs by a few cents between counties. You can adjust the state rate in the calculator to match your county.

Is gas tax included in the pump price?

Yes. Unlike sales tax, fuel taxes are built into the per-gallon price you see at the pump, so you do not see them as a separate line. This calculator breaks out how much of your spend is actually tax.

Florida Gas Tax Calculator

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Every gallon of gasoline you buy in Florida includes both a state fuel tax of roughly 36 cents and a federal excise tax of 18.4 cents — together about 54 cents per gallon, baked invisibly into the pump price. This calculator breaks out exactly how much tax you pay, whether for a single fill-up or across a whole year of driving, so you can see the hidden cost of fuel.

How it works

The calculator multiplies your gallons by the combined per-gallon tax:

Combined rate. Adds Florida’s state gas tax (default $0.36, adjustable for your county’s local option taxes) to the federal excise of $0.184 per gallon.
Fill-up mode. Multiplies the gallons in your tank by the combined rate to show tax per fill-up.
Annual mode. Divides your yearly mileage by your vehicle’s MPG to get annual gallons, then multiplies by the combined rate for your yearly fuel-tax bill.

Because fuel taxes are charged per gallon, not per dollar, the tax you pay does not change when pump prices rise or fall — only when you burn more or fewer gallons.

Tips and example

A driver who covers 12,000 miles a year in a car that gets 25 MPG burns 480 gallons. At a combined rate of about $0.544 per gallon ($0.36 state plus $0.184 federal), that is roughly $261 in fuel taxes per year — money you never see itemised at the pump.

To cut your fuel-tax bill, the only levers are driving fewer miles or improving fuel economy. Switching to a vehicle that gets 40 MPG instead of 25 would cut the same driver’s annual fuel tax by nearly 40%.