The taxpayer is required to complete schedule IHT403 of form IHT400 ( IHTM10021) if the deceased transferred any assets after 18 March 1986. However, they do not need to complete the form if the only transfers were
You must examine Form IHT403 to check whether the values
returned for the declared gifts are correct and exemptions are
properly claimed.
Where the taxpayer states that gifts are covered by annual
or small gifts exemptions but does not provide details of the gifts
themselves, you can accept that the relief is allowable, unless you
have reason or information to believe otherwise.