Please note that foreign currency is an asset for capital gains tax purposes.
The disposal of foreign currency may therefore give rise to chargeable gains or allowable losses.
Foreign currency is a fungible asset and therefore separate acquisitions of the same currency at different times must be pooled in the same way as shares or securities of the same class.
The guidance below explains the share identification rules.
Definitions: meaning of ‘security’ and ‘securities’
Shares and securities: share identification rules