Connecticut IFTA Calculator

Connecticut is a dense, heavily-trafficked corridor state in the Northeast that most through-haulers pass through on I-95 between New York and Boston. Despite its small geographic size — you can cross the entire state in about an hour without traffic — Connecticut generates significant freight volume from its pharmaceutical, aerospace, insurance, and financial services industries. The Greenwich to New Haven corridor along I-95 is one of the most congested stretches of interstate in the country, particularly during weekday rush hours. I-84 runs northeast from Danbury through Hartford to the Massachusetts border, carrying freight bound for Worcester and Boston from I-78 and I-287 in New Jersey. I-91 connects New Haven north to Springfield and Vermont.

At $0.402 per gallon, Connecticut has one of the higher diesel tax rates in the region. Rhode Island at $0.320 and Massachusetts at $0.240 are notably lower for eastbound drivers, while New York at $0.4395 is slightly higher. Fuel up in Massachusetts before heading southwest through Connecticut if your route permits.

Connecticut has commercial vehicle weight enforcement on I-95 with both fixed and portable weigh stations. The Port of New Haven handles petroleum products and has associated tank truck activity. I-95 bridge weight restrictions apply at several older structures in the state — carriers with permit loads need to plan routes carefully around the Gold Star Memorial Bridge at New London and other crossings.

Tolls are a separate but important cost consideration — Connecticut has truck tolls on I-95 and I-84 corridors under its ongoing infrastructure program, with per-axle charges that add up on daily runs. For IFTA compliance, Connecticut requires your quarterly filing through your base state, but CT's relatively high rate means any fuel purchased in cheaper neighboring states used while running Connecticut miles results in a net tax liability — track mileage precisely.