IHTM28091 | Liabilities: investigating liabilities: annuities payable on separation, divorce or dissolution of a civil partnership
From HM Revenue & Customs · Inheritance Tax Manual
You may allow a deduction for an annuity payable under
a Deed of Separation
an agreement for maintenance on a divorce or dissolution of a civil partnership (IHTM11032)
an order of Court following divorce or dissolution of a civil partnership
The allowable deduction will be calculated by the Actuarial Team. But before referring the matter you should find out from the taxpayers:
the precise circumstances in which the annuity is payable
the date of birth of the annuitant
the gender of the annuitant
the frequency of payment of the annuity.