Vehicles one (1) and two (2) years old .................... $69.00
Vehicles three (3) and four (4) years old ................. $57.00
Vehicles five (5) and six (6) years old ................... $57.00
Vehicles seven (7) and eight (8) years old ................ $45.00
Vehicles over eight (8) years old ......................... $45.00
There shall be twelve (12) registration periods, starting in January for holders of validation registration stickers numbered 1, and proceeding consecutively through December for holders of validation registration stickers numbered 12, each of which shall start on the first day of a calendar month and end on the last day of the twelfth month from the first day of the beginning month. Registration periods shall expire midnight on the last day of the registration period in the year designated by the validation registration sticker. The numeral digit on the validation registration stickers shall, as does the registration card, fix the registration period under the staggered registration system for the purpose of reregistration and notice of expiration.
A vehicle that has once been registered for any of the above-designated periods shall, upon reregistration, be registered for the period bearing the same number, and the registration card shall show and be the exclusive proof of the expiration date of registration and licensing. Vehicles may be initially registered for less than a twelve (12) month period, or for more than a twelve (12) month period, and the fee prorated on a monthly basis if the fractional registration tends to fulfill the purpose of the monthly series registration system.
Idaho Code § 49-402