Where a person and one or more other persons have a beneficial interest in a capital asset, those persons are to be treated, in the absence of evidence to the contrary, as if they were each entitled to an equal share of the whole of that beneficial interest.

Any premises or land not wholly owned by the claimant are to be disregarded for such period as is reasonable in the circumstances to enable the collection of such information as is necessary to determine the treatment of capital in accordance with paragraph (1).