IHTM34176 | Calculating the loss: sale value
From HM Revenue & Customs · Inheritance Tax Manual
The general rule is that the sale value of any investment is
the price for which it is sold (or, if it is greater, the best consideration that could reasonably have been obtained for it at the time of the sale), IHTA84/S179 (1)(b), plus
the amount of any capital payments (IHTM34177) received at any time after the death, IHTA84/S181.
The sale price is the gross proceeds of sale. All expenses are ignored.
A dividend received from a holding quoted as ex-dividend (xd) at the date of death is not included in the sale value.
The value of Government securities marked ‘1k’ or ‘1k-xd’ at the date of sale should be calculated (IHTM34174) in the same way as for the date of death.