b'82 Mercia Asset Management PLC Annual Report & Accounts 2022Notes to the consolidated financial statements continued1. Accounting policies continuedRevenue recognition continuedPerformance feesPerformance fees are earned when specified performance metrics exceed hurdles set out within fund management agreements, or when agreed with investors. These fees are recognised in the consolidated statement of comprehensive income only when the Group is entitled to receive a fee based on performance, the quantum of fee is known and it is highly probable that payment will be received by the Group. Performance fees are received shortly after confirmation of entitlement. Directly attributable costs, such as staff compensation linked to the performance in excess of the hurdle, are recognised in the consolidated statement of comprehensive income within administrative expenses upon recognition of the performance fee.Interest incomeInterest income on debt investments made to direct portfolio investee companies, including any redemption premiums, is recognised when it is highly probable that the economic benefits will flow to the Group and the amount of income can be measured reliably.Interest income earned on cash deposits and short-term liquidity investments is accrued on a time basis, by reference to the principal outstanding and at the interest rate applicable.Exceptional itemsThe Group classifies items of income and expenditure as exceptional when, in the opinion of the Directors, the nature of the item or its size is likely to be material, so as to assist the reader of the financial statements to better understand the results of the operations of the Group. Such items are, by their nature, not expected to recur as part of the normal operation of the business and are shown separately on the face of the consolidated statement of comprehensive income.LeasesA lease is defined as a contract that conveys the right to control the use of an identified asset for a period of time in exchange for consideration. All leases in excess of one year, where the Group is the lessee, are included on the Groups statement of financial position and recognised as a right-of-use asset with a related lease liability representing the obligation to makelease payments. The right-of-use asset is initially measured at cost, which comprises the initial amount of the lease liability adjusted for any lease payments made at or before the commencement date, plus any initial direct costs incurred. Subsequently, the right-of-use asset is depreciated using the straight-line method from the commencement date to the earlier of the end of the useful life of the right-of-use asset or the end of the lease term. The estimated useful lives of right-of-use property assets are determined on the same basis as those of property and equipment. The estimated useful lives of right-of-use vehicle assets are determined on the length of the lease term. The right-of-use assets are reviewed annually for impairment in accordance with IAS 36, Impairment of Assets.The lease liability is initially measured as the present value of the lease payments that are not paid at the commencement date, discounted using the interest rate implicit in the lease or, if that rate cannot be readily determined, the Groups incremental borrowing rate. Subsequently the lease liability decreases by the lease payments made, offset by interest on the liability, and may be remeasured to reflect any reassessment of expected payments or to reflect any lease modifications.Short-term leases (lease term of 12 months or less) and leases of low-value assets (which includes portable electronic devices, small items of office furniture and fixed telephones) are expensed on a straight-line basis over the term of the lease and presented within administrative expenses in the income statement.Retirement benefit costsPayments to defined contribution personal pension plans are recognised as an expense when employees have rendered a service entitling them to the contributions. Differences between contributions payable in the period and contributions actually paid are shown as either accruals or prepayments in the consolidated statement of financial position.'