How often should I expect to receive an Excise Tax bill from the Town?

You should expect to receive one (1) Excise Tax bill relative to each calendar year during which the vehicle is registered.  If the vehicle was not registered for an entire year, then the Excise Tax will be pro-rated according to the number of months during which the vehicle was registered - from the date of registration.  It should be noted that under Massachusetts General Law, proration of the Excise Tax is only allowed on a per month basis.