Refinance Break-Even Point: How to Calculate It
October 20, 2026
Your refinance break-even point is the number of months it takes for a lower monthly payment to pay back what the refinance cost. The basic formula is total refinance costs divided by the monthly payment reduction. If you plan to keep the new loan longer than that many months, refinancing may make financial sense. If you'll sell or refinance again sooner, it may not. Everything you need for the math is on your refinance Loan Estimate and your current mortgage statement.
How to calculate it, step by step. First, find your total refinance costs on the refinance Loan Estimate: Section D (Total Loan Costs) plus Section E (taxes and government fees), minus any lender credits. Leave out prepaids and the initial escrow deposit (Sections F and G), because you'd pay those either way and your old escrow balance is usually refunded. If costs are being added to your loan balance instead of paid at closing, count them anyway. Second, find your monthly payment reduction by subtracting the new principal-and-interest payment from your current one. Use principal and interest only, not taxes and insurance, but do include any change in mortgage insurance. Third, divide the costs by the monthly reduction to get the number of months. Fourth, compare that number with how long you realistically expect to keep the loan.
What the simple formula misses. Resetting the term is the big one: starting a new full-length loan term can lower your payment while raising the total interest you'll pay, so compare the total interest left on your current loan with the total interest on the new one. Costs rolled into the balance accrue interest. Points raise upfront costs, and lender credits lower them but raise the rate, so run the break-even for each pricing option the lender offers. Mortgage insurance being added or removed changes the monthly math. A cash-out refinance should be judged on the cost of the cash, not just the payment. Taxes can also change, so ask a tax professional. A no-closing-cost refinance shortens or removes the break-even period, but because the costs are covered by a higher rate or a larger balance, it may cost more over a long hold. Compare both versions on the same day. VA streamline refinances have their own federal recoupment test, covered in our VA IRRRL post.
What a refinance offer worth considering looks like, and quick answers. Look for a break-even period clearly shorter than how long you'll keep the loan, a lower total cost over that period (not just a lower payment), a locked rate on a written Loan Estimate, and no prepayment penalty on your current loan, or one you've included in the math. Is there a good break-even number? There's no universal one. The shorter it is compared with your planned hold, the more room for error. Should escrow count as a cost? Generally no. Does extending the term distort the result? Yes, so compare total interest too. How do points fit in? Points add upfront cost, so calculate separately how long the lower rate takes to repay them. What if your plans are uncertain? Run the math for a short, medium and long hold, and see whether the refinance still makes sense in each case.
Break-even in months equals total refinance costs divided by your monthly principal-and-interest reduction. Use Sections D and E minus lender credits, compare the result with how long you'll keep the loan, and check total interest so a longer term doesn't hide the true cost. Sources: CFPB, "Considering a refinance?"; CFPB Loan Estimate explainer. General education only. LoFi Rate is an independent matching service, not a lender.