This wikiHow will show you how write a letter of authorization. You can write an authorization letter to allow a hospital to disclose your medical information.Mention in the letter why you are authorizing somebody else to claim the money. And it helps if you provide a short justification. Here we share Authorization letter to bank to Transaction, Collect Document, Withdraw Money, Wrong Transaction, Withdraw money, etc. Sample templates provide. Learn how to create an authorization letter to withdraw money from your bank easily. 1. Look into granting financial power of attorney for limited transactions. FirstGlance displays Checking, Savings, Credit Card, and Cash Reserve accounts for both consumers and businesses with Mobile Banking. If the judge decided that one side owed the other money, you will need to fill out forms to let the court know when the money is paid.