Departments > Finance > Treasurer Department > Motor Vehicle Registrations

Motor Vehicle Registrations

Current Residents

To register your vehicle, you must bring the following information:

  • Previous registration
  • Current mileage of the vehicle
  • Current insurance card
  • If a business; the federal tax ID number of the company.

New Residents or Vehicles with Out-of-State Registrations 

In addition to the documents listed above please also bring:

  • Proof of Bath residency (in the form of a tax bill, utility bill, or other bill with your name and current address)
  • Vehicle's registration from the previous state
  • Title for the vehicle

Online Registration Renewals




Motor Vehicle Excise Taxes

Excise Tax is an annual tax that must be paid prior to registering a vehicle. Except for a few statutory exemptions, all vehicles registered in the State of Maine are subject to the excise tax. Excise Tax is defined by State Statute as a tax levied annually for the privilege of operating a motor vehicle or camper trailer on the public ways. 

The excise tax is calculated by multiplying the MSRP of the vehicle by the corresponding years mil rate shown below:

Year 1 .0240 mils
Year 2 .0175 mils
Year 3 .0135 mils
Year 4 .0100 mils
Year 5 .0065 mils
Year 6+ .0040 mils

For example a two year old car with a MSRP of $25,000 would be charged a mil rate of .0175 equalling an excise bill of $437.50 or ($25,000 x .0175 = $437.50).

For more information please see the Maine Revenue Services website. 

Important Information:

  • Quotes for vehicle registrations cannot be completed over the phone. It is difficult to calculate costs correctly without all of the paperwork. There are too many variables, and quotes might not be accurate if the staff can’t see all the details. 
  • If you know you’re coming up on the due date for a renewal payment, it behooves you to pay it early. The State is not always up to date in their processing and filing, and adding to that is the rush of end of the month payments. Some payments processed by the Treasurer’s Office are sent to State offices, and notification to the State doesn’t occur immediately. For example, if you’re registering your car on a Friday afternoon the last day of the month and you get pulled over during the weekend, your registration has not had ample time to update at the State level.

If you have any questions, please call the office at (207) 443-8340.