Motor Vehicle Information

Motor vehicles are assessed at 70% of the average retail as of October 1st of any given year. The Department of Motor Vehicles annually sends a list of all registered motor vehicles in the Town of Haddam to the Assessor’s Office.  These are taxed for the time period from October 1st through September 30th of the following year.  These bills are prepared in June of that year and due and payable in July.  

If a vehicle was sold, transferred, junked, stolen or otherwise disposed of, an owner may request an adjustment be made to their tax bill. The required documentation can be found on the attached list. Two forms of proof must be submitted and all acceptable items are outlined on this list. 

If the vehicle was replaced by another vehicle after October 1st, using the same registration tags (plates), a credit will be applied automatically to your supplemental bill the following January. The bill that you received in July for the initial vehicle is still due and payable. As such, if a vehicle was registered after the October 1st motor vehicle list is sent to us by DMV, the vehicle will show up on the our Supplemental Grand List. In both of these cases, a separate bill will be generated for this vehicle the following January.  

Please note that the Connecticut Statutes outline a deadline for filing for property tax credits (prorates) for Motor Vehicles as such:

  • For the October 1, 2019 Grand List – Deadline is December 31, 2021
  • For the October 1, 2018 Grand List – Deadline is December 31, 2020
  • For the October 1, 2017 Grand List – Deadline was December 31, 2019