Authorization letter sample: Learn how to draft authorization letters with templates, formats, and detailed examples for all scenarios. Know how to write an Authorisation letter along with samples.Sample Authorization Letter for Opening Bank Account - Free download as (. Bank Authorization Letter Samples. It provides details of the author's personal bank account, including the bank name, account name, number, and type. To deposit the author's paycheck into his bank account for services rendered. Edit, sign, and share bank third party authorization form online. No need to install software, just go to DocHub, and sign up instantly and for free. The Letter is issued following the commencement of probate estate and the appointment of a personal representative. TD Bank makes setting up direct deposit easy with this convenient, pre-filled form.