IFRS 16 “Leases” establishes the principles for recognition, measurement, presentation and disclosure of lease contracts. A single lease accounting model was adopted if the Group acts as a lessee. If the Group acts as a lessor then it continues to classify its leases as operating leases or finance leases, and accounts for those two types of leases differently. The Group qualifies a contract as a lease as long as it gives the lessee the right to control the use of a particular asset. In order to qualify a contract as a lease, three main conditions shall be met: As at 1 January 2019 the Group has defined four major categories of lease contracts: The accounting presentation of lease contracts in the statement of financial position depends mainly on: which require significant judgment from the Company’s Management Board. The Management Board reviews these estimates if the circumstances on which they were based evolve or in the light of new information or established market practice. Group as a lessee On the lessee’s side the Group uses a single accounting model, in which the lessee is required to recognise a right-of-use asset representing its right to use the underlying leased asset and a lease liability representing its obligation to make lease payments. The Group has chosen to apply two exemptions proposed by the standard and expense as external purchases the following contracts: The lease duration corresponds to the non-cancellable period of the lease, periods covered by extension options that the Group is reasonably certain to exercise and termination options that the Group is reasonably certain not to exercise. In case of indefinite period leases the Group estimates the reasonably certain lease term to determine the lease term. The Group assessed the reasonably certain lease terms of cancellable lease contracts to be equal to 5 years for all lease contracts, except for 18 years for road occupancy leases where fixed network infrastructure is placed. For easements in buildings, where the Group located its telecommunication infrastructure, a lease duration is assessed as an average useful life of buildings in the Group. Subsurface contracts and land easements are measured basing on the portfolio approach due to significant number of homogenous contracts. At the lease commencement date, the Group recognises a right-of-use asset and a lease liability. The right-of-use asset is measured at cost which comprises: After the commencement date, the Group measures the right-of-use asset applying a cost model, less any accumulated depreciation and any accumulated impairment losses, as well as any adjustments resulting from remeasurement of the lease liability. The lease liability is measured at the present value of the lease payments that are not paid at the commencement date. The lease payments are discounted using the incremental borrowing rates as the rates implicit in the lease are not easily determinable. Discount rates adopted are based on Polish state bond yield, adjusted by credit spread observable for entities with similar credit rating. Discount rates are differentiated by duration and by currency, and not by class of assets. The lease liability comprises the following payments: After the commencement date, the lease liability is increased to reflect interest on the lease liability and reduced to reflect the lease payments made, as well remeasured to reflect any reassessment or lease modification. Only the lease component is taken into account in the measurement of the right-of-use asset and of the lease liability. Other non-lease components, like payments for utilities, are accounted for separately in accordance with other applicable accounting standards. Group as a lessor The Group continues to classify its leases as operating leases or finance leases, and to account for those two types of leases differently. A lease is classified as a finance lease if it transfers substantially all the risks and rewards incidental to ownership of an underlying asset. A lease is classified as an operating lease if it does not transfer substantially all the risks and rewards incidental to ownership of an underlying asset. Examples of situations that individually or in combination would lead to a lease being classified as a finance lease are as follows: