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.A payoff letter shows the remaining balance on your mortgage, including fees, interest, etc. Learn more about what a payoff quote is and how to request one. How to fill out the Payoff Request Letter Templates? Fairfax County, Virginia - The WDU Homebuyer Program offers access to new and resale condominiums to qualifies homebuyers at below market prices. If you'd like to fax a payoff request to us, send it to 800-200-8772. Use SmartAsset's free Virginia mortgage loan calculator to determine your monthly payments, including PMI, homeowners insurance, taxes, interest and more. Request your free payoff quote in one of two convenient ways. You'll choose your good-through date up to 30 days.