One thing for sure is that the bank will want to know the specific reasons for the removal request as the next-to-kin. This document provides instructions for a scam known as the "Next of Kin" or "N.To close a bank account on behalf of someone who has passed away, you must have legal authority to manage the account. A: In this situation, the bank is likely requesting documentation to establish your legal right to claim the funds in your mother's account. The bank will insist on Letters even if you have a Death Certificate, even if you have a Will, and even when the Will says you are the executor. Sample letter to close bank account of deceased. The best way to avoid any issues with accessing the bank accounts of deceased family members is to have a clear and up-to-date estate plan in place. What should the next of kin do?