IHTM16102 | Interest in part of a fund: value of a share
From HM Revenue & Customs · Inheritance Tax Manual
The importance of is that it ensures that the beneficiary’s interest is valued as a fraction of the whole, with no question of joint property discount ().
The share to be valued () on a termination in lifetime depends upon whether the claim is on -
the termination of all of that beneficiary’s interest, or
the termination of part of that beneficiary’s interest -
On a claim on a death the termination necessarily relates to the entire share in which the beneficiary had an interest and that share is to be valued.