Connecticut IFTA Calculator
Connecticut IFTA fuel tax rates, Q3 2026
| Fuel type | Rate per gallon | Change from last quarter |
|---|---|---|
| Diesel | $0.4990 | +$0.0100 |
| Gasoline | $0.2500 | No change |
| Propane (LPG) | $0.2600 | No change |
| LNG | $0.2600 | No change |
| CNG | $0.2600 | No change |
| Biodiesel | $0.4990 | +$0.0100 |
- Diesel rate rank among IFTA jurisdictions
- 9 of 57
- Administered by
- Connecticut Department of Revenue Services
- State agency IFTA page
- portal.ct.gov
Calculate your Connecticut 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 |
|---|---|---|
| Massachusetts (MA) | $0.2400 | -$0.2590 |
| New York (NY) | $0.3805 | -$0.1185 |
| Rhode Island (RI) | $0.4000 | -$0.0990 |
Diesel rate by quarter
| Quarter | Rate per gallon |
|---|---|
| Q3 2026 | $0.4990 |
| Q2 2026 | $0.4890 |
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