Refinancing may be worth considering when the potential benefits outweigh the costs of replacing your existing mortgage. Start by comparing your current interest rate, monthly payment, remaining balance, and years left with the terms available on a new loan. Then account for refinancing costs such as lender fees, appraisal, title services, and other closing expenses. Your personal plans also matter. If you expect to move soon, you may not have enough time to recover the upfront costs. If you plan to stay for several years, a lower rate or better loan structure may provide more opportunity to benefit. You can use a refinance calculator to compare estimated payments and loan costs. For a broader evaluation, your refinance readiness checker can help you think through whether refinancing may fit your situation.