Bank letterhead; Account number; Routing number; Business name. For a savings account, provide a signed letter with the bank information.Account information on the form and the support documentation must match. How do I sign up for Direct Deposit? Fill out this authorization agreement along with verification from the bank showing the account number and routing numbers. Your proof of funds letter lists all your accounts, details the amount of money you have, your account number, and physical address. You can enroll in Digital Banking either in person at a branch or online. We have several forms that you can download and fill out. It's quick and easy to check your balances, view your transaction history and transfer funds with Online Banking. EDocuments allow you to view and download electronic versions of statements, various notices, and tax documents (eStatements, eNotices, and eTax Documents).