Refinance break-even, explained with the costs left in
Every refinance pitch leans on one number: the lower monthly payment. The number that decides whether the deal helps you is different. It is the month when the money you saved has paid back what the refinance cost to get. That month is the break-even point, and everything about a refinance gets clearer once you can see it.
The break-even formula
Break-even month = total closing costs divided by monthly payment savings. If a refinance costs $6,000 in closing costs and lowers the payment by $200 a month, the break-even point is month 30. Move, sell, or refinance again before month 30 and the deal lost money, no matter how good the new rate looked on paper.
That is the simple version, and it is the right place to start. The fuller version also counts interest. Two loans with the same payment can charge very different interest in the early years, because interest is front-loaded in every amortization schedule. Our calculator shows both views: the payment break-even and the interest comparison over the years you actually plan to stay.
What counts as a closing cost
Closing costs are everything you pay to get the new loan that you would not pay by keeping the old one. The Consumer Financial Protection Bureau groups them into lender charges, third-party services, and prepaid items, and only some of them belong in a break-even calculation.
- Lender charges: origination, application, processing, underwriting, and any discount points you buy.
- Third-party services: appraisal, title search and insurance, credit report, flood certification, recording fees, and transfer taxes where your state charges them.
- Prepaid items: homeowner's insurance, property taxes, and per-diem interest. These are mostly timing, not true cost, because you would pay them on the old loan too. Many lenders quietly include them to make a no-cost offer look generous or a cost figure look smaller.
The two ways break-even gets dressed up
The first trick is the no-closing-cost refinance, covered in its own guide. The costs do not disappear; they move into a higher rate or a bigger loan balance, where they stop appearing in the break-even math entirely.
The second trick is restarting the clock. Extending a loan with 24 years left back out to 30 years lowers the payment even at the same rate, so the payment break-even looks wonderful while lifetime interest climbs. A break-even claim that does not mention the new term is only telling you half the story.
How to use this number when lenders quote you
Start with the Loan Estimate, not the advertisement. The advertisement gives you a rate; the Loan Estimate gives you the closing cost figure that belongs in the numerator. Split that figure into lender charges, third-party fees, and prepaids, leave the prepaids out, and divide what remains by the monthly payment saving. That single division is your break-even month, and it is the first number to ask every lender to defend.
Then ask for the same rate on the term you actually have left. On the worked example above, moving from a 30-year term to the 27 years remaining shrinks the payment saving and pushes break-even later, while cutting lifetime interest by far more. Both quotes are honest; they answer different questions. The payment quote answers how the loan feels each month. The term-matched quote answers what the loan costs while you hold it. A good decision needs both answers on the page at the same time.
Finally, compare break-even against your earliest realistic exit, not your hoped-for stay. If work, family, or a possible sale could move you inside the break-even window, treat the refinance as unproven until the numbers survive that shorter horizon. Run the shorter horizon in the calculator as well. A refinance that only wins on the longest stay you can imagine is a weaker deal than the same refinance winning on the stay you can defend.
- Get the closing cost total in writing, split into lender charges, third-party fees, and prepaids.
- Price the new rate on your remaining term as well as on a fresh 30-year term.
- Test break-even against your earliest realistic move date, not your longest possible stay.
Worked example
A $400,000 balance at 7.5% with 27 years left costs about $2,797 a month in principal and interest. Refinancing to 6.5% on a new 30-year term drops that to about $2,528, saving $269 a month. With $6,000 of closing costs, break-even is month 23. Stay seven years and the refinance comes out roughly $12,900 ahead after costs. Shorten the new loan to the 27 years you actually had left and the payment saving shrinks, but lifetime interest falls much further. Run your own numbers on the calculator; small rate or cost changes move the answer a lot.
The trap most people miss
Comparing the new payment to the old payment without asking how many years each payment runs. A lower payment spread over more years is often a more expensive loan wearing a friendlier outfit.
Checklist
- Get the closing cost figure in writing, split into lender charges, third-party fees, and prepaids.
- Divide true closing costs by the monthly payment saving. That is your break-even month.
- Ask whether you will plausibly stay past that month. Job moves, family changes, and a possible sale all count.
- Compare lifetime interest for both loans, not just the payment.
- Check whether the new term restarts the clock, and price the same rate on your remaining term too.
Common questions
What is a good break-even period for a refinance?
There is no universal good number. The right test is personal: break-even should land comfortably before the earliest date you might move, sell, or refinance again. Many homeowners use two to three years as a comfort threshold, but a break-even of four years is fine if you are confident you will stay ten.
Do discount points count toward break-even?
Yes. Points are a closing cost you pay to buy the rate down, so they go into the numerator. A point that costs $4,000 and saves $60 a month needs 67 months just to repay itself, before any other closing costs are counted.
Should I roll closing costs into the loan balance?
Rolling costs in raises the balance, which raises interest on every future payment. It can still be the right move when cash is tight, but count the rolled amount as a cost in your break-even math, because it is one.
Should taxes and insurance be counted in break-even?
No. Prepaid taxes, insurance, and escrow deposits are your own bills collected early. You owe them on the old loan too, so they are timing, not a cost of refinancing. Count lender charges, third-party fees, and any points you buy. The prepaid and escrow guides on this site show how to separate the two stacks on a closing statement.
What if my break-even lands just after I might move?
Treat that as a warning, not a rounding error. Break-even is the month the savings have repaid the costs; moving before it means the refinance lost money even if the new rate looked better. Either negotiate the fee stack down, test a lender credit structure with a shorter horizon, or keep the current loan and revisit the math when your stay is clearer.
Sources and verification
- Consumer Financial Protection Bureau: Explains closing cost categories and the Loan Estimate form lenders must provide. Checked October 4, 2026.
- Freddie Mac Primary Mortgage Market Survey: Weekly benchmark for national average mortgage rates, used here only as rate context. Checked October 4, 2026.
This page teaches the method. It does not know your rate quote, your closing cost estimate, or how long you will stay, and those three inputs decide the answer. The calculator on this site runs the same math on your numbers.