If you wish funds to be deposited to your savings account, please provide a letter from your financial institution with your routing and account number. You can write a letter, sign it and hand it to a bank professional.They will accept the letter but, may still have you sign their form. Empower a trusted representative with an Authorization Letter. Make a free Authorization Letter in minutes with our customizable template. Court Forms and Instructions. Completing the Forms. Authorization to withdraw funds from an inmate's account for the purchase of a publication does not constitute approval of the publication. Fill in your contact details, account number and any extra information you want to include in the grey shaded areas. All they need for an electronic funds withdrawal is their checking and savings account number and the routing transit number for their financial institution.