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. Gather documents you need​​ You will need: A certified copy of the death certificate.A sample form of Waiver of Account is included in this website. How Do Bank Closure Letters Work? Discover the precise steps to secure Letters of Testamentary in California. Our comprehensive guide makes the process straightforward and hassle-free. When you open a bank account for the estate, the account name must indicate that it is a guardianship account and not your personal account. Proof of death, such as certified copies of the death certificate. In this article, we walk you through all the steps to writing and formatting the letter, including a sample and a template. Proof of death, such as certified copies of the death certificate.