Fortress Bank provides the community with sound financial solutions for business and personal use from our nine banking centers in Illinois and Iowa. If you're interested in learning how, please fill out this form and we'll be in touch.A mortgage payoff letter can come in two forms. One form tells borrowers the remaining principal amount and interest they have to pay to close out the loan. Big news at Fortress Bank! We're excited to announce that Compass Mortgage is now part of our team, providing us with a clearer path to better serve you. Home loans with a personal touch. Compass Mortgage treats you like family. Please enter only the 12 digits to the right of the dash in your account number. Do not enter any letters or the dash.