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Haul Math

Tennessee IFTA Fuel Tax Rate, 3rd Quarter 2025

Tennessee's IFTA diesel rate for the 3rd quarter of 2025 is $0.2700 per gallon, unchanged from Q2 2025.

Tennessee rate for Q3 2025

Special diesel, Q3 2025

$0.2700

per US gallon, unchanged from Q2 2025

Diesel tax rate
$0.2700/gal
Surcharge
None listed
Quarter
Q3 2025, from Jul 1, 2025
Change vs last quarter
unchanged
Notes from the source

Matrix footnote #8 (TENNESSEE): Effective date for changes is January 1, 2025.

Worked example: the Tennessee 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 Tennessee, and 100 gallons bought there.

Example numbers are filled in. Tap "Calculate Tennessee IFTA" to see the Tennessee line of an IFTA return at the Q3 2025 rate.

Tennessee vs. its neighbors, Q3 2025

IFTA diesel rates for Tennessee and bordering jurisdictions, Q3 2025
JurisdictionDiesel + surchargevs. TN
Virginia$0.4700+$0.2000
North Carolina$0.4030+$0.1330
Georgia$0.3710+$0.1010
Kentucky$0.3250+$0.0550
Alabama$0.3000+$0.0300
Missouri$0.2950+$0.0250
Arkansas$0.2850+$0.0150
Tennessee$0.2700—
Mississippi$0.2100−$0.0600

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.

Tennessee rate, last 4 quarters

Tennessee IFTA diesel rate by quarter
QuarterDieselSurchargeChange
Q4 2024$0.2700——
Q1 2025$0.2700—no change
Q2 2025$0.2700—no change
Q3 2025$0.2700—no change

Source: IFTA, Inc. Fuel Tax Rate Matrix, 3rd Quarter 2025 · Effective Jul 1, 2025 · Last verified Sep 28, 2026

IFTA, Inc. publishes the rates each member jurisdiction reports. Tennessee'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.