If you'd like to close a bank account, all you might need is a bank account closure letter. You can use this letter template to write to the bank to request the closure of a direct payments account following the death of the account holder.Proof of death, such as certified copies of the death certificate. Sub: Request to close an account due to death. Fill it out for the deceased, but don't forge the name. Selling property of a deceased person and identity theft; Estate tax based on value of assets; Forms and publications. How to file final tax returns. In the following sections, we review what a bank account beneficiary is and how to find out if you've been designated as one. Sample Letter to Bank Informing the Death of the Account Holder. The death claim letter should be written in the formal letter format.