Fill this form out and turn in to your employer. How to Complete this Form. 1.Find a free letter writing template for Word and customize your correspondence. Free downloadable letter examples to help you communicate with your bank and credit union account holders. Dear Branch Manager,. The present balance is (US Dollar Amount). Discover Pinterest's best ideas and inspiration for Bank letter format. Get inspired and try out new things. We provide sample templates tailored to different account types, providing a warm and informative welcome for every new customer. This document provides a sample format for writing a formal letter to a bank.