Where share options are awared to employees, the fair value of the options at the date of grant is charged to profit or loss over the vesting period. Non-market vesting conditions are taken into account by adjusting the number of equity instruments expected to vest at each Balance Sheet date so that, ultimately, the cumulative amount recognised over the vesting period is based on the number of options that eventually vest. Market vesting conditions are factored into the fair value of the options granted. The cumulative expense is not adjusted for failure to achieve a market vesting condition.
The fair value of the award also takes into account non-vesting conditions. These are either factors beyond the control of either party (such as target based on an index) or factors which are within the control of one or other of the parties (such as the Group keeping the scheme open or the employee maintaining any contributions required by the scheme).
Where the terms and conditions of options are modified before they vest, the increase in the fair value of the options, measured immediately before and after the modification, is also charged to profit and loss over the remaining vesting period.
Where equity instruments are granted to persons other than employees, profit or loss is charged with fair value of goods and services received.