Q1 2026 rate
Louisiana IFTA fuel tax rate
Rates effective January 2026
The current per-gallon fuel tax Louisiana charges under the International Fuel Tax Agreement, and how it lands on your quarterly return.
Fuel tax rate
$0.3719
per gallon
How Louisiana fits your IFTA return
You do not pay Louisiana directly for the fuel tax on your trips here. You file one IFTA return with your base jurisdiction each quarter, and it settles what you owe Louisianaagainst the fuel tax you already paid at the pump.
The math is simple once you have the numbers. Take your total miles and total gallons for the quarter to get a fleet MPG. The miles you ran inLouisiana divided by that MPG is the taxable gallons here, and those gallons times $0.3719 is the tax.
Returns are due the last day of the month after each quarter: April 30, July 31, October 31, and January 31.
This Q1 2026 rate is a reference value. IFTA rates change every quarter, so confirm the official Louisiana rate with your base jurisdiction before you file.
Filing deadlines
Q1 · April 30
January to March
Q2 · July 31
April to June
Q3 · October 31
July to September
Q4 · January 31
October to December
Other state rates