Specifications include, but are not limited to: LESSEE ACCOUNTING Calculation of lease liability, individual and in aggregate, at the present value of payments and purchase option, if necessary, expected to be made during the lease term(s) or useful life. Calculation of amortizations schedules, individual and in aggregate, of the discount on the lease liability. Calculation of the measure of lease assets, individual and in aggregate, including any ancillary charges. Calculation of amortization schedules, individual and in aggregate, of the lease asset. Ability to remeasure lease liability calculations and amortization schedules if lease modifications or discount rate changes are made during a reporting period, including renewal options. Ability to remeasure lease asset calculations and amortization schedules for lease terminations, lease modifications or discount rate changes made during a reporting period. Ability to adjust calculations as necessary for impairment of an asset. The total amount of lease assets, and the related accumulated amortization. The amount of lease assets by major classed of underlying assets. The amount of outflows of resources recognized in the reporting period for variable payments not previously included in the measurement of the lease liability. The amount of outflows of resources recognized in the reporting period for other payments, such as residual value guarantees, or termination penalties not previously included in the measurement of the lease liability. Principal and interest requirements to maturity for the lease liability for each of the five subsequent fiscal years and in five-year increments thereafter. LESSOR ACCOUNTING Calculation of lease receivable, individual and in aggregate, at the present value of payments expected to be received during the lease term(s). Calculation of amortizations schedules, individual and in aggregate, of the discount on the lease receivable. Ability to remeasure lease receivable calculations and amortization schedules for lease terminations, lease modifications or discount rate changes are made during a reporting period including renewal options. Calculation of the measure of lease Deferred Inflow of Resources, individual and in aggregate. Calculation of amortization schedules, individual and in aggregate, of the lease Deferred Inflow of Resources. The total amount of inflows of resources recognized in the reporting period from leases. The amount of inflows of resources recognized in the reporting period for variable and other payments not previously included in the measurement of the lease receivable. A schedule of future payments that are included in the measurement of the lease receivable, showing principal and interest separately, for each of the five subsequent fiscal years and in five-year increments thereafter.