IFTA rates › California
California IFTA Fuel Tax Rate — 2nd Quarter 2026 (Diesel and Gasoline)
2nd Quarter 2026 rates · last verified 2026-06-27 · source below
For 2nd Quarter 2026, the California IFTA tax rate is $0.9710/gallon for diesel. Use this rate on the miles your fleet drove in California to calculate the California portion of your quarterly IFTA return.
| Fuel | Rate / gallon | Source |
|---|---|---|
| Diesel (special diesel) | $0.9710 | Official IFTA tax matrix |
| Gasoline | see source |
Some jurisdictions also levy a separate diesel surcharge (e.g. Kentucky, Indiana, Virginia) that is filed in addition to the rate above — confirm on the official matrix. Rates change every quarter.
Frequently asked questions
What is the California IFTA diesel rate for 2nd Quarter 2026?
The California IFTA diesel (special diesel) tax rate for 2nd Quarter 2026 is $0.9710 per gallon, per the official IFTA tax matrix.
How do I calculate IFTA tax owed to California?
Take the taxable gallons your fleet burned in California during the quarter (miles driven in California divided by your fleet MPG), then multiply by the California rate of $0.9710 per gallon, and net it against the fuel tax you already paid at the pump in California.