Refinance break-even calculator Estimate the month when a lower mortgage payment recovers refinance closing costs, then compare monthly savings, annual savings, and payback timing before you decide whether the refinance is worth it.
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Enter valid refinance values Enter a current payment, a lower new payment, and non-negative closing costs. The refinance must lower the payment for a break-even result to exist.
Refinance break-even calculator: closing costs, monthly savings, and payback timing
A refinance break-even calculator estimates how many months it takes lower mortgage payments to recover upfront closing costs. Enter your current payment, new payment, and closing costs to see monthly savings, annual savings, and the break-even month where the refinance starts paying you back.
What the refinance break-even month means
The refinance break-even month is the point at which cumulative payment savings equal the upfront cost of refinancing. Before that month, the refinance has not yet repaid its closing costs. After that month, each additional month of lower payments is net savings, assuming the loan terms stay as entered.
That makes the calculator useful when you are asking whether a refinance is worth it. A lower monthly payment can still be a weak choice if the closing costs are large and you expect to sell or move before the payback period arrives. The break-even month turns a general "lower payment" idea into a concrete planning threshold.
Core formulas
The calculator uses a simple payback model. First it finds the monthly savings by subtracting the new payment from the current payment. Then it divides the closing costs by those savings to find the break-even month. If closing costs are zero and the payment falls, payback is immediate because there is no upfront cost to recover.
Monthly savings = Current payment - New payment
This is the amount saved each month after the refinance.
This estimates how long it takes the lower payment to recover refinance costs.
Annual savings = Monthly savings × 12
This shows the value of the payment reduction over a full year before subtracting upfront fees.
Worked example: 2,000 down to 1,800 with 4,000 in closing costs
Suppose your current payment is 2,000 per month, the refinanced payment is 1,800 per month, and closing costs are 4,000. Your monthly savings are 200, and the break-even month is 20. That means it takes 20 months of lower payments to recover the refinance cost before the refinance begins producing net savings.
The same example produces 2,400 of annual savings before fees. That does not mean the refinance is automatically the best choice. It means the payment drop is large enough to recover the upfront cost after 20 months, so the decision depends on how long you expect to keep the loan and whether the lender quote is realistic.
How to use break-even timing in a refinance decision
Break-even timing works best when you compare it with your expected time in the home. If you think you will move before the break-even month, the refinance may still lower your payment, but it may not repay its upfront costs before you leave. If you expect to stay well beyond break-even, the refinance has a better chance of being worthwhile.
This calculator is a planning tool, not a lender offer. Real refinance quotes can change with credit profile, property value, loan program, points, escrow treatment, and closing-cost rules. Always compare the calculator result with the Loan Estimate and Closing Disclosure from an actual lender.
It is the month when the total payment savings from a lower mortgage payment equal the closing costs you paid to refinance. Before break-even, the refinance has not paid back its upfront cost. After break-even, the lower payment creates net savings.
How do closing costs affect refinance payback?
Higher closing costs push the break-even month farther out because you need more months of savings to recover a larger upfront expense. Lower closing costs shorten the payback period. If closing costs are zero and the new payment is lower, payback is immediate.
Is a refinance still worth it if I might move before break-even?
Maybe, but the refinance is less compelling. If you plan to move before the break-even month, the lower payment may not have enough time to recover the closing costs. In that case, compare the cash flow benefit with the likely time you will stay in the home.
What if the new payment is not lower than the current payment?
Then there is no meaningful break-even result because monthly savings are zero or negative. A refinance only creates payback timing when the new mortgage payment is lower than the current payment.
