A bank letter is an official document from your bank that provides important information about your business' official bank account. • Fill out, sign and mail this form to the address below, or fax to 801-297-7698.Electronic Funds Transfer Unit. This service is useful for paying such things as bills, vendors, dividend or interest payments, and payroll for employees. 1. Log in to online banking. To have a Treasury Management representative contact you, simply complete the form below. Safely and quickly deposit your money into your checking or savings account. Set up is super easy with our Direct Deposit Switch tool. Need help setting up or understanding direct deposit? Find and fill out the forms you need.