Equity-settled share-based payment transactions are measured at fair value at the date of grant. The fair value is expensed on a straight-line basis over the vesting period, with a corresponding increase in equity. This is based upon the company's estimate of the shares or share options that will eventually vest which takes into account all vesting conditions and non-market performance conditions, with adjustments being made where new information indicates the number of shares or share options expected to vest differs from previous estimates.
Fair value is determined using an appropriate pricing model. All market conditions and non-vesting conditions are taken into account when estimating the fair value of the shares or share options. As long as all other vesting conditions are satisfied, no adjustment is made irrespective of whether market or non-vesting conditions are met.
Where the terms of an equity-settled transaction are modified, an expense is recognised as if the terms had not been modified. In addition, an expense is recognised for any increase in the fair value of the transaction, as measured at the date of modification.
Where an equity-settled transaction is cancelled or settled, it is treated as if it had vested on the date of cancellation or settlement, and any expense not yet recognised in profit or loss is expensed immediately.
Cash-settled share-based payment transactions are measured at the fair value of the liability. Until the liability is settled, the fair value of the liability is re-measured at each reporting date and at the date of settlement, with any changes in fair value recognised in profit or loss for the period.