(a) My post office address is: (b) My residence address is: ; and. To close a bank account on behalf of someone who has passed away, you must have legal authority to manage the account.No letters of office are now outstanding on the decedent's estate, and no petition for letters is contemplated or pending in Illinois or in any other. One thing for sure is that the bank will want to know the specific reasons for the removal request as the next-to-kin. Without a will, your next of kin may inherit your assets when you die. Out of all the areas of law, probate ranks near the top of those that ordinary people are likely to experience during their lifetimes. My dad passed away two months ago. Got the death certificate in hand and went to the bank to close his account. Get the resources you need to help navigate someone else's financial affairs. Cancel benefits payments and close or transfer accounts.