Mortgage Calculators Mortgage Calculators offers a selection of calculators that you can use for figuring mortgage costs. Select one of the following calculators: What home can I afford? What will my closing costs be? How much can I borrow? Am I better off renting? How much will my payments be? Am I better off refinancing? How much will adjustable rate payments be? What will my refinancing costs be? Which is better: fixed or adjustable? How can I reduce mortgage insurance costs? Should I pay points to lower the rate? Which lender has the better loan? Which is better: 15 or 30 year term? Which loan is better? How much should I put down? How advantageous are extra payments? How much can I save in taxes?