Mortgage refinancing explained: what actually happens

What refinancing replaces

A refinance replaces your existing mortgage with a brand-new loan, usually from a different lender, and uses the new loan to pay off the old one. You get a new rate, a new term, and a fresh closing process, much like when you first bought the home. The house stays exactly where it is; only the financing underneath it changes.

Rate-and-term vs cash-out

The common version is a rate-and-term refinance: you borrow roughly what you still owe, but at a lower rate or a different payoff length. A cash-out refinance is a different animal. There you borrow more than you owe and pocket the difference in cash, which raises your balance. Chasing a lower rate and tapping your equity are two separate decisions, and it is worth keeping them separate in your head.

Why a lower rate is not the whole question

Because refinancing has a real upfront cost and can restart your loan’s clock, the verdict is never simply "is the new rate lower." The right question is "does the lower rate save me enough, fast enough, to be worth the cost and the reset." That is what the breakeven calculation answers, and it is the heart of how Wend decides whether a refinance actually pays off for you.