This allocation can have a significant impact on the registration of the lessee`s right of use and the lessor`s income. The lessor, in particular, has the additional complexity of applying Topic 606`s new revenue realization forecast to non-lease components. A practical tool is provided to the lessee, which is explained below to ignore the impact of un rented items. In this example, a lessee takes into account a simple operating lease for a building with 10 identical annual lease payments. Suppose: Step 1: Determine the current value factor to use, 10 years and 14% give us 5.2161 A lease agreement is a contract between two parties, the lessor and the lessee. The lessor is the rightful owner of the asset, the tenant obtains the right to use the asset against the rent. .