Should I refinance my mortgage? Finding the break-even point
8 min read · Updated 2026-10-11 · MoneyCalc
Refinancing replaces one loan with another, usually to get a lower rate, a lower payment or to release equity. It can save tens of thousands over the life of a mortgage — or it can cost money, because refinancing has fees and it resets the clock. The deciding calculation is the break-even point.
The break-even calculation
Divide the total closing costs of the new loan by the monthly saving. The result is the number of months it takes to recoup the cost. If closing costs are $4,500 and the payment drops by $150 a month, you break even in 30 months.
If you expect to stay in the home longer than the break-even period, refinancing usually makes sense on cost alone. If you might move sooner, you may pay the fees and never see the benefit.
The trap: resetting the term
Refinancing typically restarts a 30-year clock. A borrower who is ten years into a 30-year loan and refinances into a new 30-year loan may see the monthly payment fall while the total interest paid over the life of the new loan rises, because they are now paying interest for another three decades.
The fix is to refinance into a shorter remaining term, or to keep making the old, higher payment voluntarily. A lower rate on a reset term is not automatically a better deal.
Rate-and-term vs cash-out
A rate-and-term refinance changes the rate, the term or both, and leaves the balance roughly unchanged. A cash-out refinance replaces the loan with a larger one and hands you the difference in cash, converting home equity into money to spend or invest.
Cash-out can be reasonable for consolidating high-rate debt, but it moves unsecured debt onto your home. If you cannot repay it, the consequence is no longer a bad credit score — it is losing the house. Treat it with corresponding seriousness.
The rule of thumb, and its exceptions
A widely used rule is that refinancing is worth considering when the new rate is at least 0.5 to 1 percentage point below your current rate, subject to the break-even test. Below that gap, the fees usually eat the saving before you recover them.
An exception is the no-cost refinance, where the lender covers closing costs in exchange for a slightly higher rate. That removes the break-even risk entirely and can work well if you may move within a few years.
Other reasons people refinance
Dropping mortgage insurance once you have enough equity, switching from an adjustable rate to a fixed rate for certainty, removing a co-borrower, or shortening the term to pay the loan off sooner are all legitimate reasons — sometimes more compelling than a rate reduction alone.
Before starting, check the fees carefully. Appraisal, origination, title and recording costs add up, and some lenders bury them in higher rates rather than charging them upfront. Compare the total cost of the new loan, not just the headline rate.
Run your own numbers
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Common questions
How much does refinancing cost?
Typically 2-5% of the loan balance in closing costs, though the amount varies widely by lender and location. Some lenders offer no-cost refinances in exchange for a slightly higher rate.
Can I refinance with bad credit?
Possibly, but at a higher rate. Refinancing is most valuable when your credit has improved since you took out the original loan, because that is when the rate gap is largest.
MoneyCalc provides general information only and is not financial, investment, tax or legal advice. Figures are illustrative and depend on your own circumstances. See our full disclaimer.