IHTM42234 | The settlement: Same day additions: Exceptions
From HM Revenue & Customs · Inheritance Tax Manual
The following events cannot be same day additions (SDAs):
Transfers to wholly charitable trusts
Transfers (to any one trust on any one day) that do not exceed £5,000 in total
Payment or funding of a regular premium on an insurance policy held by the trustees
Transfers to protected testamentary trusts
A protected testamentary trust (PTT) is defined by IHTA84/S62C, and is a trust that commenced before 10 December 2014 and either:
No transfers of value were made to that trust on or after 10 December 2014, or
An addition to that trust was made on a death before 6 April 2017, and the provisions of the will were, in substance, the same as they were immediately before 10 December 2014.