I need to renew/new registration on my car/vessel, but have delinquent taxes.

All outstanding motor vehicle taxes associated with your name and/or your vehicle(s) must be paid in full in order to obtain a motor vehicle clearance from the Tax Collector's Office to DMV. CGS 14-33 & 14-33a

If you owe delinquent motor vehicle property taxes, you may not renew any registration at the DMV until all motor vehicle property taxes are paid. Acceptable payments for immediate clearance are cash, certified bank check or money order. Other payment methods are delayed.

All DMV clearances are currently processed online electronically. The DMV stopped accepting paper clearances in 2015.