Mortgage Calculators Basic Mortgage Qualification Calculates the required income needed to buy the house you want. Bi-Weekly Mortgage This calculates how much you will pay over the life of the loan when paying bi-weekly. Detailed Mortgage Qualification This calculates your amortization schedule and total payments made with various options. Monthly Loan Payment Allows you to explore the outcome of changes to your loan balance, mtg term, and interest rate on your P&I payments. Principal After X Years Provide the principal balance on your loan after you've made the specified number of payments that you identify.