IFTA Tax Calculator

Calculate quarterly fuel tax for IFTA reporting - Track miles and fuel by state/province

📋 What is IFTA?

International Fuel Tax Agreement (IFTA) is a fuel tax agreement between U.S. states and Canadian provinces to simplify fuel tax reporting for interstate carriers.

  • Who needs it: Vehicles over 26,000 lbs traveling in 2+ jurisdictions
  • Reporting: Quarterly (due last day of month after quarter ends)
  • What to track: Miles driven and fuel purchased in each state/province
  • Calculation: Tax = (Total Miles ÷ Total Fuel) × State Tax Rate - Fuel Purchased in State

⚠️ Important: This tool uses 2024 tax rates for estimation. Always verify current rates at iftach.org

Select Reporting Period
Filing Deadline: April 30, 2025
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Total Miles
0
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Total Fuel (gal)
0
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Fleet MPG
0.00
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Net Tax Due
$0.00
Add State/Province Data
Total miles in this jurisdiction
Total fuel purchased in this jurisdiction
Auto-filled from state database
Jurisdiction Breakdown
State/Province Miles Fuel (gal) MPG Taxable Gallons Tax Rate Tax Due Action
No state data entered yet. Add states above to begin.

💡 IFTA Reporting Tips

Keep Accurate Records

Maintain detailed logs of miles driven and fuel purchased in each state. Use trip sheets, fuel receipts, and odometer readings.

Quarterly Deadlines

Q1 due April 30, Q2 due July 31, Q3 due Oct 31, Q4 due Jan 31. Late filing can result in penalties.

Base Jurisdiction

Pay all IFTA taxes to your base state. They distribute to other states based on your report.

Tax Credits vs Debits

If you buy more fuel than you consume in a state, you get a credit. If you consume more than you buy, you owe tax.

Exempt Fuel

Off-road miles (APU, reefer, idle time) are not taxable. Track separately from road miles.

Verification

Keep all fuel receipts and trip records for 4 years. States can audit your IFTA returns.