Refinancing makes sense when the money you save after closing costs is real and you will keep the loan long enough to collect it. Divide total closing costs by the monthly savings to get your break-even point in months. If you plan to stay longer, and the new loan does not stretch your remaining term much, refinancing can save thousands. Closing costs usually run 2–5% of the loan. Also compare total remaining interest, not only the monthly payment.
The break-even point
Break-even (months) = total closing costs ÷ monthly savings.
Before that month, the refinance has cost you money. After it, you are ahead — as long as you still have the loan. If you might sell or move before break-even, a refinance that looks attractive on paper can lose money.
The costs
A refinance is a new mortgage, so you pay closing costs again: origination and application fees, appraisal, title insurance, recording and sometimes discount points. Industry guides commonly put the total at 2% to 5% of the loan amount — $6,000 to $15,000 on a $300,000 loan.
"No-closing-cost" offers still charge them: either the costs are added to the balance or the lender gives you a higher rate. Compare the Loan Estimates of at least three lenders side by side; the standardized form makes that easy.
A worked example
Three years ago you borrowed $300,000 for 30 years at 7.5%. Your payment is $2,098 and the balance today is about $291,000. A lender offers 6.5%, with closing costs of 3% (about $8,700).
| Keep the loan | Refinance, new 30 years | Refinance, 27 years | |
|---|---|---|---|
| Rate | 7.5% | 6.5% | 6.5% |
| Monthly payment | $2,098 | $1,840 | $1,908 |
| Monthly savings | — | $258 | $190 |
| Break-even | — | 34 months | 46 months |
| Remaining interest | $388,600 | $371,200 | $327,100 |
| Years until paid off | 27 | 30 | 27 |
The new 30-year loan saves the most each month, but it adds three years of payments: total interest drops by only about $17,000, and less than $9,000 after closing costs. Keeping the original 27 years left saves about $61,000 in interest. Same rate, very different result.
The monthly payment answers "can I afford it?". Total interest answers "is it worth it?".
The term trap
Every time you refinance into a new 30-year loan, the amortization schedule starts again — with mostly interest in the early years. Homeowners who refinance every few years can end up paying for decades longer than planned. If you want the lower rate but not the longer loan, choose a term close to what you have left, or keep making your old payment on the new loan.
When refinancing usually makes sense
- The new rate is meaningfully lower — many lenders and advisers use about 0.5 to 1 percentage point as a starting point — and you will stay past break-even.
- You want to move from an adjustable rate to a fixed one before a reset.
- You can shorten the term at a similar payment and save interest.
- You want to remove mortgage insurance once you have enough equity.
Rates move both ways. In 2026, the Freddie Mac average for a 30-year fixed loan fell to about 6.0% in February and rose back above 7% in late September. Watching the rate alone is not a plan; knowing your break-even rate is.
When it usually doesn't
- You plan to sell before the break-even point.
- The rate difference is small and the costs are high.
- You would extend the term so much that total interest rises.
- A cash-out refinance turns home equity into spending, with the cost spread over 30 years.
How to do it in AOS
When to check again
Check when rates move by half a point or more, when your plans for the home change, or when an adjustable rate is about to reset. Keep your break-even calculation with the loan documents; it tells you whether a new offer is worth a phone call.
FAQ
How much lower should the rate be?
There is no universal threshold. A rule of thumb is 0.5–1 percentage point, but what matters is your break-even: a small drop on a large loan with low costs can pay off, a big drop with high costs and a short stay may not.
Should I roll closing costs into the loan?
You can, but then you pay interest on them for the life of the loan. Include them in the break-even and total interest calculation either way.
Does refinancing hurt my credit?
The application causes a hard inquiry and the new loan resets the account's age, which can lower your score slightly for a while. Shopping several lenders within a short period is usually treated as one inquiry for mortgages.
What is a cash-out refinance?
A new, larger loan that pays off the old one and gives you the difference in cash. It turns equity into debt; it can make sense for high-return uses, but it raises your balance and interest.
Can I refinance more than once?
Yes, but each refinance has new costs and, unless you choose a shorter term, restarts the schedule. Compare against the loan you have now, not against the one you started with.
Sources
This article is for information only and is not investment, tax or legal advice. Figures are given with their source and date.
