If the payments due to your estate are in the form of a pecuniary legacy ( IHTM12072) then you can generally accept this figure without further query. You need only look into the matter in further detail if from the answers on schedule IHT415 ( IHTM10035) of IHT400 ( IHTM10021) it appears that either
If the deceased’s entitlement was substantial and not subject to spouse or civil partner exemption ( IHTM11032) on the earlier death then you should check that we have a file for the earlier deceased.