For a taxable capital gain to arise, there has to be a disposal, or a deemed disposal, of an asset. The taxpayer will need to establish when the disposal took place. This will determine when the tax must be paid, and in some cases will also decide: • the amount of tax • who has to pay it, and/or • whether it is payable at all This Practice Note describes the timing rules that apply to: • assets that are disposed of under a contract • deemed disposals, and • options and forfeited deposits In this Practice Note CGT means both capital gains tax and corporation tax on chargeable gains. Disposal under a contract The general rule is that when an asset is disposed of under an unconditional contract, disposal is treated as taking place at the time when the contract is made. This applies even if the asset is actually transferred at a later date. For example, when land is sold there is normally a contract, followed, at some later date,