How much interest can you save if you refinance? Our Refinance Calculator helps you find out! Enter the specifics about your current mortgage, along with your current appraised value, new loan term, rate, and closing costs. This will determine how much interest refinancing can save you, and how much you will get when refinancing your house. In addition, it will calculate the number of months to break even on closing costs with your reduced monthly payment. Click the ‘View Report’ button for a detailed look at the results.