DieselMath

Oklahoma IFTA Tax Rate — 2026 Q4

Diesel rate, 2026 Q4

$0.1900 / gallon

Estimate what you owe in Oklahoma

Miles run in Oklahoma ÷ your fleet MPG = gallons burned there. Burned gallons × $0.1900 minus tax you already paid at Oklahoma 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