What's worse is when interest rates spike home prices also fall, which makes it harder to sell a home & anyone refinancing their purchase will also be forced to refinance at a higher rate. Comparing Loan Scenarios: This calculator makes it easy to compare loan scenarios, while this calculator shows what would happen if a buyer made extra , Here's how to calculate how much you can save by refinancing your mortgage using this tool. First, enter your existing mortgage information: First monthly mortgage balance: Your current principal balance or payoff amount., LendingTree’s mortgage refinance calculator can help you decide if it’s time to replace your current mortgage with a new one. It costs money to refinance a home, and the refinance calculator can help you determine whether the benefit is worth the cost.First, you’ll need to enter some information about your current home loan., Try realtor.com’s refinance calculator to find out if you should refinance your home. See how refinancing with a lower mortgage rate could save you money., Use this refinance calculator to see if refinancing your mortgage is right for you. Calculate estimated monthly payments and rate options for a variety of loan terms to see if you can reduce your monthly mortgage payments., The easiest way to know if refinancing makes sense is to use a mortgage refinance calculator. It shows you the difference between what you’re paying now and what your payment could be after refinancing. A mortgage refinance might be worth considering if you’ll pay less in interest and the monthly payments fit into your budget..