It can be as simple as "we are closing your account as of X date. You must submit a letter to the bank manager each time you want to open or close a bank account outlining your motives.Are you considering closing your bank account? Follow these steps to ensure a smooth and hassle-free transition. This guide will walk you through the process, offering tips and a sample letter to help you close your account without hassle. To close a bank account on behalf of someone who has passed away, you must have legal authority to manage the account. Mention that you want to close your account, provide the account number, and explain why, if necessary. Request for Balance Transfer. Need to write an attorney closing letter to clients? I am Sudharshana Karthik, and I have a personal loan in my account in your bank.