Ontario IFTA Fuel Tax Rate, 4th Quarter 2025
Ontario's IFTA diesel rate for the 4th quarter of 2025 is $0.2469 per gallon (C$0.0900 per litre), down $0.0044 from Q3 2025.
Ontario rate for Q4 2025
Special diesel, Q4 2025
$0.2469
per US gallon, down $0.0044 from Q3 2025
- Diesel tax rate
- $0.2469/gal
- Surcharge
- None listed
- Native rate
- C$0.0900/litre
- IFTA exchange rate
- 1 USD = 1.3797 CAD
- Quarter
- Q4 2025, from Oct 1, 2025
- Change vs last quarter
- down $0.0044
Ontario taxes fuel by the litre in Canadian dollars. The IFTA matrix shows C$0.0900 per litre as $0.2469 per US gallon, using that quarter's exchange rate of 1.3797 CAD to the US dollar.
Notes from the source
Matrix footnote #5 (ONTARIO): Effective April 1, 2014, Biodiesel is a taxable product and taxed as diesel.
Worked example: the Ontario 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 Ontario, and 100 gallons bought there.
Ontario vs. its neighbors, Q4 2025
| Jurisdiction | Diesel + surcharge | vs. ON |
|---|---|---|
| Quebec | $0.5542 | +$0.3073 |
| Michigan | $0.5070 | +$0.2601 |
| New York | $0.3875 | +$0.1406 |
| Manitoba | $0.3429 | +$0.0960 |
| Minnesota | $0.3180 | +$0.0711 |
| Ontario | $0.2469 | — |
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.
Ontario rate, last 4 quarters
Source: IFTA, Inc. Fuel Tax Rate Matrix, 4th Quarter 2025 · Effective Oct 1, 2025 · Last verified Sep 28, 2026
IFTA, Inc. publishes the rates each member jurisdiction reports. Ontario'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.