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United States · ID
Idaho
IFTA fuel tax rates, jurisdiction details, and neighboring states for Idaho.
Current tax rates
Diesel
$0.3200/gal
Gasoline
$0.3200/gal
Effective 2026-04-01. Per gallon, USD.
Jurisdiction
Code
ID
Country
United States
Region
Pacific Northwest
Timezone
Mountain
Neighboring jurisdictions
Trips through Idaho commonly cross into these. Check their rates if you log miles there too.
IFTA in Idaho
Idaho is a member of the International Fuel Tax Agreement. Carriers operating qualified vehicles in Idaho report all miles traveled and fuel purchased in the state on their quarterly IFTA returns.
Fuel purchased in Idaho generates a tax credit at the rate of $0.3200/gal/gal for diesel. If you put more miles on the road in Idaho than the fuel you purchased there would cover, you owe additional tax. If you purchased more fuel than you used, you receive a credit.
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