Fortress Bank provides the community with sound financial solutions for business and personal use from our nine banking centers in Illinois and Iowa. We would love to help you manage and grow your vision.If you are 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. If you cannot afford your monthly mortgage payments and wish to avoid foreclosure, you may be eligible for a loan "workout" or modification. Please enter only the 12 digits to the right of the dash in your account number. Do not enter any letters or the dash. Thank you for your trust and investment in Republic Bank. A mortgage payoff letter can come in two forms.