['Fleet Taxes']
['Highway use - Mileage tax']
11/08/2025
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International Fuel Tax Agreement (IFTA)
IFTA applies to qualified vehicles operating in more than one IFTA jurisdiction. A qualified motor vehicle is a motor vehicle used, designed, or maintained for transportation of persons or property and that:
- Has two axles and a gross vehicle weight or registered gross vehicle weight exceeding 26,000 pounds; or
- Has three or more axles regardless of weight; or
- Is used in combination, when the weight of such combination exceeds 26,000 pounds gross vehicle weight.
IFTA fees
IFTA license and decals, no fee
Temporary decal permits
Montana will issue a temporary decal permit/license, in lieu of decals, only if the carrier has an established IFTA account in good standing.
Mileage/Highway use taxes
There are no requirements for any highway use taxes to be charged in Montana.
Tax refunds or credits
IFTA
Information regarding credits or refunds under IFTA is included in the IFTA Agreement Manual.
PTO/Reefer fuel
The State of Montana does allow for refunds on tax-paid fuel used in reefer or power-take-off equipment. While a refund permit is not required, refunds must be requested within 36 months from date of purchase. Applications for refund of diesel tax, together with the original fuel receipts, must be submitted for all refund requests.
Tax credits are not allowed for off-highway fuel consumed from the same fuel tank used to propel the power vehicle.
['Fleet Taxes']
['Highway use - Mileage tax']
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