Mortgage Refinance Break-Even Calculator
Tells you how many months it takes for the monthly savings from refinancing to cover the upfront closing costs. If you plan to keep the home past this break-even point, the refinance pays for itself.
Last updated: May 2026
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About this calculator
Refinancing a mortgage almost always costs money upfront — application fees, appraisal, title insurance, origination charges, and other closing costs that typically run 2–5% of the loan amount. The break-even point is the moment those upfront costs are fully recovered by your lower monthly payment: break-even months = closing costs ÷ monthly savings. If refinancing costs $4,000 and lowers your payment by $200 a month, you break even after 20 months; stay in the home longer than that and the refinance saves you money, sell or refinance again sooner and you lose money on the deal. This simple ratio is the single most important screen for any rate-and-term refinance. The logic is intuitive but the inputs need care. "Monthly savings" should be the genuine reduction in your payment, and you should be wary of refinances that lower the payment only by stretching the term back out to 30 years — that can reduce the monthly figure while increasing total interest paid over the life of the loan. "Closing costs" should include every fee, and you should be especially cautious of "no-cost" refinances, where the fees are rolled into the loan balance or a higher rate, changing the real math. The break-even calculation also ignores the time value of money and any difference in total lifetime interest, so for a complete decision compare the total interest of staying put versus refinancing, not just the monthly payment. Still, as a fast go/no-go test, the break-even period is invaluable: if you do not expect to keep the loan past break-even, do not refinance.
How to use
Example 1 — Standard rate-and-term refinance. Closing costs are $4,000 and the new loan saves $200/month. Enter 4000 and 200. Result: 20 months. Verify: 4,000 ÷ 200 = 20. ✓ If you will stay in the home more than 20 months (under two years), the refinance pays for itself. Example 2 — Smaller rate drop. Closing costs of $5,500 produce monthly savings of $110. Enter 5500 and 110. Result: 50 months. Verify: 5,500 ÷ 110 = 50. ✓ You would need to keep the loan for over four years to come out ahead — a much riskier proposition if you might move.
Frequently asked questions
What is a good refinance break-even period?
Shorter is better, and a common rule of thumb is that a refinance makes sense if you will stay in the home well beyond the break-even point — ideally with break-even under two to three years. A break-even of 12–24 months is excellent; 36–60 months is marginal and only worthwhile if you are confident you will keep the loan that long. If break-even stretches beyond the time you realistically expect to stay or before you might refinance again, the deal likely costs you money. Always compare break-even to your expected holding period, not to an absolute number.
Should I include taxes and escrow changes in monthly savings?
No — use only the change in principal and interest (and mortgage insurance, if it changes). Property taxes and homeowners insurance flow through your escrow account but are not affected by refinancing, so including them distorts the savings figure. The relevant number is how much lower your actual loan payment is purely because of the new rate and term. Be careful: some lenders show a lower "payment" that includes a temporary escrow adjustment or a longer term, which is not true interest savings. Isolate the principal-and-interest reduction for an accurate break-even.
What about "no-closing-cost" refinances?
There is no such thing as truly free — the costs are either rolled into your loan balance (so you pay interest on them) or covered by accepting a higher interest rate. With a higher rate, your monthly savings are smaller, which lengthens the real break-even, even though there is no upfront cheque to write. To compare fairly, calculate break-even for both options: a low-rate refinance with upfront costs, and the no-cost version with smaller monthly savings. No-cost refinances can make sense if you expect to move relatively soon, because you avoid the upfront outlay, but they are rarely the cheapest option over a long hold.
What mistakes do people make with the break-even calculation?
The biggest is ignoring that resetting to a new 30-year term can lower the monthly payment while increasing total interest paid — you "save" monthly but pay more over the life of the loan. Another is underestimating closing costs by leaving out fees like title insurance, appraisal, and origination charges. People also forget to compare break-even to how long they will actually stay; a great rate is worthless if you move before recouping the costs. Finally, some compare only the payment and ignore the lifetime-interest comparison, which is the truest measure of whether refinancing helps.
When should I not refinance even with a short break-even?
Avoid refinancing if you plan to sell or move before reaching break-even, since you will not recover the costs. Be cautious if refinancing extends your loan term significantly — resetting a loan you have paid down for 8 years back to 30 years can increase total interest even at a lower rate. Skip it if your credit has worsened and you would not qualify for a meaningfully better rate, or if prepayment penalties on your current loan offset the savings. And if you are close to paying off the mortgage, the small remaining balance rarely generates enough monthly savings to justify any closing costs.