Free tool
IFTA Fuel Tax Calculator
Enter the miles you drove and the gallons you bought in each state for the quarter, plus that state's tax rate. Get the current rates from the official IFTA tax rate matrix.
14-day free trial · $15/driver/month after.
Start Your 14-Day Free Trial| State | Miles | Gallons bought | Tax rate ($/gal) | Taxable gal | Owed (+) / Credit (−) | |
|---|---|---|---|---|---|---|
| 0.0 | $0.00 | |||||
| 0.0 | $0.00 |
Total miles
0
Fleet MPG
—
Estimated net tax
$0.00
Estimate only. It doesn't include surcharges, penalties or interest. Confirm with your base jurisdiction before filing.
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How the calculation works
- Fleet MPG = total miles ÷ total gallons bought
- Taxable gallons per state = miles in that state ÷ fleet MPG
- Net tax per state = (taxable gallons − gallons bought there) × that state's rate