(1) On new registrations of automobiles, trucks and truck tractors, the excise tax payment must be made prior to registration and is for a one-year period from the date of registration.

(2) Vehicles registered under the International Registration Plan are subject to an excise tax determined on a monthly proration basis if their registration period is less than 12 months.

(3) For commercial vehicles manufactured in model year 1996 and after, the amount of excise tax due for trucks or truck tractors registered for more than 26,000 pounds and for Class A special mobile equipment, as defined in Title 29-A, section 101, subsection 70, is based on the purchase price in the original year of title rather than on the list price. Verification of purchase price for the application of excise tax is determined by the initial bill of sale or the state sales tax document provided at point of purchase. The initial bill of sale is that issued by the dealer to the initial purchaser of a new vehicle.

(4) For buses manufactured in model year 2006 and after, the amount of excise tax due is based on the purchase price in the original year of title rather than on the list price. Verification of purchase price for the application of excise tax is determined by the initial bill of sale or the state sales tax document provided at point of purchase. The initial bill of sale is that issued by the dealer to the initial purchaser of a new vehicle.

(5) For trucks or truck tractors registered for more than 26,000 pounds that have been reconstructed using a prepackaged kit that may include a frame, front axle or body but does not include a power train or engine and for which a new certificate of title is required to be issued, the amount of excise tax due is based on the maker's list price of the prepackaged kit.

(6) For motor vehicles purchased after December 31, 2018 from a new vehicle dealer, as defined in Title 29-A, section 851, subsection 9, or a used car dealer, as defined in Title 29-A, section 851, subsection 11, the amount of excise tax due is based on the purchase price of the motor vehicle. Notwithstanding section 1481, subsection 7, for the purposes of this subparagraph, "purchase price" means the amount of money financed or paid by the consumer after application of any trade-ins, rebates or discounts or offers or promises that the consumer receive back all or a portion of the price paid. Verification of purchase price for the application of excise tax is determined by the bill of sale or the state sales tax document provided by the dealer at point of purchase.