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Haul Math

Indiana IFTA Fuel Tax Rate

Indiana's IFTA diesel rate for the 3rd quarter of 2026 is $0.6300 per gallon, unchanged from Q2 2026.

Indiana rate for Q3 2026

Special diesel, Q3 2026

$0.6300

per US gallon, unchanged from Q2 2026

Diesel tax rate
$0.6300/gal
Surcharge
None listed
Quarter
Q3 2026, from Jul 1, 2026
Change vs last quarter
unchanged
Notes from the source

Matrix footnote #31 (INDIANA): Effective January 1, 2024, Indiana has adopted fuel tax rates for newly recognized fuel types: Electricity (EV), Hydrogen(HD), and Hythane (HT). Indiana’s fuel tax rate for these fuel types is based on the taxable distance traveled on Indiana Roads. The tax due for these fuel types is calculated by multiplying Indiana taxable distance traveled by the Indiana tax rate (D x R = T). Changed rates from 0.3400 to .03500 and from 0.5700 to 0.5900 Changed Rate changed from Gasoline 35 to 36 Sp Fuel from 59 to 61 Changed Rates for Gasoline from 0.3600 to 0.3700 & Special Fuel from 0.6100 to 0.6300 Indiana has issued a “gas tax holiday” on gasoline and gasohol fuel types. Effective July 1, 2026 – September 5, 2026 the fuel tax rate for gasoline and gasohol will be $0.00 per gallon. All other fuel types are unaffected. The matrix has a surcharge row for this jurisdiction but lists no Special Diesel surcharge.

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

Example numbers are filled in. Tap "Calculate Indiana IFTA" to see the Indiana line of an IFTA return at the Q3 2026 rate.

Indiana vs. its neighbors, Q3 2026

IFTA diesel rates for Indiana and bordering jurisdictions, Q3 2026
JurisdictionDiesel + surchargevs. IN
Illinois$0.7380+$0.1080
Indiana$0.6300—
Michigan$0.5240−$0.1060
Ohio$0.4700−$0.1600
Kentucky$0.3250−$0.3050

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.

Indiana rate, last 4 quarters

Indiana IFTA diesel rate by quarter
QuarterDieselSurchargeChange
Q4 2025$0.6100——
Q1 2026$0.6100—no change
Q2 2026$0.6300—+$0.0200
Q3 2026$0.6300—no change

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

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