Connecticut IFTA Calculator
Connecticut IFTA fuel tax rates, Q3 2026
| Fuel type | Rate per gallon | Change from last quarter |
|---|---|---|
| Diesel | $0.4990 | — |
| Gasoline | $0.2500 | — |
| Propane (LPG) | $0.2600 | — |
| LNG | $0.2600 | — |
| CNG | $0.2600 | — |
| Biodiesel | $0.4990 | — |
- Diesel rate rank among IFTA jurisdictions
- 9 of 57
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Calculate your Connecticut IFTA tax
Return due Nov 2, 2026
The state that issued your IFTA license. It appears on your worksheet.
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Diesel tax in neighboring jurisdictions
| Jurisdiction | Effective rate per gallon | Compared with here |
|---|---|---|
| Massachusetts (MA) | $0.2400 | -$0.2590 |
| New York (NY) | $0.3805 | -$0.1185 |
| Rhode Island (RI) | $0.4000 | -$0.0990 |
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