There's no special format so long as who you are and the purpose of the letter is clear. This document provides instructions for a scam known as the "Next of Kin" or "N.I have been notified to provide a next of kin to claim the funds or the account confiscated within the next ten official working days. This is to notify the bank that my. (Relationship with deceased). Since I have been the nominee for a long period of time of their joint account, I shall be handling the account on their behalf. This approval is granted in the form of a Letter of Administration. How do i write a letter for next of kin (father) who is willing to give up his rights to heir in son inheirtance?