How Indiana compares
Indiana's diesel rate of $0.6300 is the 4th highest of the 57 jurisdictions that tax diesel through IFTA this quarter. The average among them is $0.3696; the lowest is Oklahoma at $0.1900 and the highest is California at $0.9790. The IFTA matrix lists Indiana's gasoline rate as $0.0000 for the 3rd quarter 2026; it was $0.3700 in the 2nd quarter 2026. See the official matrix for the reason before relying on it.
Indiana surcharge
Indiana still lists a surcharge line on the IFTA matrix, but for the 3rd quarter 2026 it is $0.0000 for diesel and gasoline, so only the base rate applies.
Example: 1,000 miles in Indiana
A truck averaging 6.5 MPG that drives 1,000 miles in Indiana burns 153.85 taxable gallons there. If none of its fuel was bought in Indiana, it owes Indiana $96.93 for the quarter (153.85 × $0.6300). Every tax-paid gallon bought in Indiana reduces the base tax by $0.6300. Run your own numbers.
Indiana rates by fuel type, 3rd quarter 2026
| Fuel | U.S. $ per gallon | CAD $ per litre |
|---|---|---|
| Diesel | $0.6300 | $0.2327 |
| Gasoline | $0.0000 | $0.0000 |
| Biodiesel | $0.6300 | $0.2327 |
| Gasohol | $0.0000 | $0.0000 |
| E-85 | $0.3700 | $0.1368 |
Propane, LNG, CNG, electricity and hydrogen are measured in different units from one jurisdiction to the next, so they are not listed here; see the official matrix.
Indiana IFTA rate history
| Quarter | Diesel | Gasoline |
|---|---|---|
| 3Q 2026 | $0.6300 | $0.0000 |
| 2Q 2026 | $0.6300 | $0.3700 |
| 1Q 2026 | $0.6100 | $0.3600 |
| 4Q 2025 | $0.6100 | $0.3600 |
| 3Q 2025 | $0.6100 | $0.3600 |
| 2Q 2025 | $0.5900 | $0.3500 |
| 1Q 2025 | $0.5900 | $0.3500 |
When is the 3rd quarter 2026 return due?
IFTA returns for the 3rd quarter 2026 are due November 2, 2026. You file with your base jurisdiction, which pays Indiana its share; miles in Indiana go on that return whether or not you bought fuel there.
Rather not do this every quarter?
We reconcile your fuel receipts and mileage and prepare the quarterly IFTA return for you, next to your driver files and hours of service.
IFTA rates in other jurisdictions
United States
Canada
Rates in U.S. dollars per gallon (and Canadian dollars per litre) from the final IFTA, Inc. tax rate matrix. IFTAX is not affiliated with IFTA, Inc. or any government agency; confirm rates with your base jurisdiction before filing.