IFTA Carriers
Read our 
instructions on how to calculate miles per gallon on your IFTA returns during the fuel tax holidays for Maryland, Georgia, and Connecticut.
instructions on how to calculate miles per gallon on your IFTA returns during the fuel tax holidays for Maryland, Georgia, and Connecticut.
The information in this section applies only to Idaho IFTA licensees, unless otherwise noted.
Column 9: Taxable gallons
- Divide the taxable miles in column 8 by the average fleet mpg for the fuel type in column 5.
- Find the average fleet MPG for this fuel type in Section 3, column C.
- If you have more than one fuel type, make sure you match the fuel type code for the MPG to the fuel type code in column 5 of this row.
- Round to the nearest whole gallon.