Refinancing a mortgage means replacing your current home loan with a new one, sometimes to change terms like the interest rate, loan term, or loan type. Some homeowners explore refinancing if market rates change, their credit profile changes, or their home value changes, which may affect the loan’s cost, monthly payment, or mortgage insurance. Common refinance types include rate-and-term or cash-out. It also helps to understand closing costs, how long you plan to keep the loan, and how rates can vary before making a decision.