Abstract: A method or system for executing a leasing plan on a piece of equipment using an actual days basis for a lease charge on a current adjusted capitalized cost on the piece of equipment. A periodic lease payment can be received by the lessor on a given date and the lease charge for the current adjusted capitalized cost (ACC) balance on an actual days basis for a number of days between the given date and a lease-start date or the given date and a date when a previous lease payment was received is calculated. Thereafter, a portion of the periodic lease payment is allocated to the lease charge that has been calculated on an actual days basis and a remainder of the periodic lease payment can be applied to the ACC balance.