Refinancing replaces your current mortgage with a new loan, which may change your interest rate and monthly payment. Key factors include understanding your current loan terms, home equity, closing costs, and potential tax implications. Options can include fixed-rate and adjustable-rate mortgages, and some borrowers may be eligible for certain government-backed programs like FHA or VA (availability depends on guidelines). Preparation often includes a credit review and understanding the steps involved. Periodic mortgage check-ins after a refinance can help confirm it still fits your evolving financial needs.