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Haul Math

Mississippi IFTA Fuel Tax Rate, 4th Quarter 2024

Mississippi's IFTA diesel rate for the 4th quarter of 2024 is $0.1800 per gallon, unchanged from Q3 2024.

Mississippi rate for Q4 2024

Special diesel, Q4 2024

$0.1800

per US gallon, unchanged from Q3 2024

Diesel tax rate
$0.1800/gal
Surcharge
None listed
Quarter
Q4 2024, from Oct 1, 2024
Change vs last quarter
unchanged
Notes from the source

Matrix footnote #2 (MISSISSIPPI): LNG is taxed per Diesel Gallon Equivalent beginning July 1, 2015. The tax rate was set by the 2014 Legislative Session to be taxed at $.18 per Diesel Gallon Equivalent. A Diesel Gallon Equivalent of LNG is measured at 6.06 lbs. CNG is sold to consumers on the Gasoline Gallon Equivalent of 5.660 lbs. However, the tax rate is still on the measurement of $.18 cents per hundred cubic foot. The above tax rate converts CCF to GGE.

Worked example: the Mississippi line of your IFTA return

Change the numbers to match your quarter. Prefilled with 10,000 total miles on 1,550 gallons, 1,200 of those miles in Mississippi, and 100 gallons bought there.

Example numbers are filled in. Tap "Calculate Mississippi IFTA" to see the Mississippi line of an IFTA return at the Q4 2024 rate.

Mississippi vs. its neighbors, Q4 2024

IFTA diesel rates for Mississippi and bordering jurisdictions, Q4 2024
JurisdictionDiesel + surchargevs. MS
Alabama$0.3000+$0.1200
Arkansas$0.2850+$0.1050
Tennessee$0.2700+$0.0900
Louisiana$0.2000+$0.0200
Mississippi$0.1800—

On an IFTA return, a higher rate doesn't mean you pay more overall. Fuel you buy in a high-rate state earns a bigger credit. What matters is where you burn the fuel versus where you buy it.

Mississippi rate, last 4 quarters

Mississippi IFTA diesel rate by quarter
QuarterDieselSurchargeChange
Q1 2024$0.1800——
Q2 2024$0.1800—no change
Q3 2024$0.1800—no change
Q4 2024$0.1800—no change

Source: IFTA, Inc. Fuel Tax Rate Matrix, 4th Quarter 2024 · Effective Oct 1, 2024 · Last verified Sep 28, 2026

IFTA, Inc. publishes the rates each member jurisdiction reports. Mississippi's tax agency is the final word on its rate.

Estimates for planning. Confirm with your tax pro or your base jurisdiction's IFTA office before filing.