To close a bank account on behalf of someone who has passed away, you must have legal authority to manage the account. The letters cite reasons for closure such as relocating, no longer needing the account, job changes, and death of an account holder.The first and foremost thing you must do to close a bank account upon the death of a loved one is to inform the bank of this death. This article will give you the reasons why you should close your bank account. Sample account closing letters are also given for your better understanding. Question: what is required to close out a deceased person's bank account, no will but everything went to closest blood rel. You should produce the concerned Bank branch the death certificate from municipal authority as proof of that persons demise. You have to write an application to the bank. Special Counsel Jack Smith resigns from Department of Justice amid Trump's efforts to block release of his final investigation report. Linnea Stenson. Sincerely,.