Montana IFTA Calculator
Montana IFTA fuel tax rates, Q3 2026
| Fuel type | Rate per gallon | Change from last quarter |
|---|---|---|
| Diesel | $0.2975 | — |
| Gasoline | N/A | — |
| Propane (LPG) | $0.0518 | — |
| LNG | N/A | — |
| CNG | $0.0700 | — |
| Biodiesel | $0.2975 | — |
- Diesel rate rank among IFTA jurisdictions
- 37 of 57
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- State agency IFTA page
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Calculate your Montana IFTA tax
Return due Nov 2, 2026
The state that issued your IFTA license. It appears on your worksheet.
- Total miles
- 0
- Total gallons
- 0
- Fleet MPG
- —
Diesel tax in neighboring jurisdictions
| Jurisdiction | Effective rate per gallon | Compared with here |
|---|---|---|
| Alberta (AB) | $0.3519 | +$0.0544 |
| British Columbia (BC) | $0.4060 | +$0.1085 |
| Idaho (ID) | $0.3200 | +$0.0225 |
| North Dakota (ND) | $0.2300 | -$0.0675 |
| South Dakota (SD) | $0.2800 | -$0.0175 |
| Saskatchewan (SK) | $0.4060 | +$0.1085 |
| Wyoming (WY) | $0.2400 | -$0.0575 |
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