IFTA Inputs
State Mileage and Fuel Entries
| State | Miles in State | Tax-Paid Gallons |
|---|
IFTA Tax Calculator
Estimate quarterly IFTA due or credit by state using total gallons, state miles, and tax-paid gallons.
Frequently Asked Questions
What is IFTA?
IFTA is a fuel tax reporting agreement for motor carriers operating in multiple jurisdictions. It simplifies reporting by filing one quarterly return through your base state.
Why do deadhead miles count?
Deadhead still consumes fuel and affects fleet MPG, so it belongs in mileage totals used to estimate taxable gallons.
How is fleet MPG calculated?
Fleet MPG is total miles divided by total gallons purchased for the quarter. It is then used to estimate taxable gallons per state.
Why do some states show a credit?
A credit appears when tax-paid gallons in a state exceed estimated taxable gallons for that jurisdiction.
How often do tax rates change?
State rates can change quarterly. Use current jurisdiction rates when preparing final filings.