DieselMath

California IFTA Tax Rate — 2026 Q4

Diesel rate, 2026 Q4

$0.9790 / gallon

Estimate what you owe in California

Miles run in California ÷ your fleet MPG = gallons burned there. Burned gallons × $0.9790 minus tax you already paid at California pumps = your net.Run the full IFTA estimator →

All 2026 Q4 rates

Neighboring and top freight states:

Rate period: 2026 Q4 · Source: IFTA Inc. official tax matrix