DieselMath

Oklahoma IFTA Tax Rate — 2026 Q3

Diesel rate, 2026 Q3

$0.190 / gallon

Estimate what you owe in Oklahoma

Miles run in Oklahoma ÷ your fleet MPG = gallons burned there. Burned gallons × $0.190 minus tax you already paid at Oklahoma pumps = your net.Run the full IFTA estimator →

All 2026 Q3 rates

Neighboring and top freight states:

Data updated: 2026Q3 · Source: IFTA Inc. official tax matrix