in NH, registrations are the month of your birthday, and cars & truck also get inspected that month, motorcycle inspection is in the spring(by June 1) regardless of birthday, I have some of my vehicles registered under my business name, a birthday is assigned based on the alphabet, so I have registrations due in April, as well as my birthday in November. Licenses are renewed every 5 years in your birthday month
oh, and it cost me more for my 2007 V-strom, and 2015 Kymco UTV for street registration, than my 2002 Silverado, (part of registration is based on value, not weight) the value, is based on new with a formula for depreciation and my Silverado is fully depreciated in regard to registration fee