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🚛 IFTA Calculator
Miles • MPG • Fuel Tax • Balance Due
Basic
Advanced
Basic IFTA Calculation
Total Miles Driven
Total Gallons Purchased
Average Fuel Tax Rate ($/gallon)
Calculate IFTA
Advanced IFTA – State Breakdown
Total Miles (All States)
Total Gallons Purchased
Miles in High-Tax State
High-Tax State Rate ($/gal)
Low-Tax State Rate ($/gal)
Calculate Full IFTA
IFTA Basics
• MPG = Total Miles ÷ Total Gallons
• Taxable Gallons = Miles ÷ MPG
• Tax Due = (Taxable Gallons × State Rate) − Fuel Purchased Credits
• Used by interstate commercial vehicles