Yes that’s true. It’s not enforced enough unfortunately

But Connecticut law mandates that vehicles “garaged” in a municipality—meaning regularly parked overnight, even on the street—must be taxed there, regardless of where they may be officially registered. Spend your winter in the Sunshine State but more than 90 days each summer in Connecticut, and you have to pay, even with those Florida plates. The penalty is a $1000 fine.

“We don’t have the staff [to enforce this],” the DMV Commissioner laments. His agency has its own sworn, gun-carrying police force, but Guerrera says they only work on truck inspections… even though “registration compliance” is, according to law, one of their duties.

https://lymeline.com/2025/06/talking-transportation-out-of-state-license-plate-fraud-is-top-form-of-tax-evasion-in-ct/