What Is the Refinance Break-Even Calculator?
A refinance break-even calculator shows whether swapping your current mortgage for a new one is worth the upfront cost. It compares your old and new monthly payments against closing costs to tell you how many months it will take to come out ahead.
How to use this calculator
Type your numbers into the fields above. The results change the moment you edit any input, so you can try one scenario after another and see exactly what moves. Most calculators show a short summary of the key figures, a line-by-line breakdown underneath, and — where it applies — a year-by-year schedule you can export to a spreadsheet. Everything runs in your browser; nothing is stored or sent anywhere. Treat the output as a planning estimate, not as final word on a real decision.
The Formula
Break-even months = closing costs ÷ monthly savings, where monthly savings = current payment − new payment. If the savings are positive and you stay in the home longer than the break-even period, refinancing is profitable; the net gain equals savings × months minus closing costs.
Worked Example
If your payment drops from $2,200 to $1,900 (a $300 monthly saving) and closing costs are $5,000, the break-even point is about 16.7 months. Staying five years would save roughly $18,000 minus the $5,000 cost — a net gain near $13,000.
Tips for the Most Accurate Estimate
- Get a written estimate of all closing costs, not just the lender fee.
- Compare the new rate to your current rate; even 0.5% can matter on large loans.
- Plan to stay past the break-even point for the refinance to pay off.
- Consider a no-closing-cost refinance if you may move soon, though the rate is usually higher.
- Roll closing costs into the loan only if you want to preserve cash.
Frequently Asked Questions
Q: What if my payment does not go down?
If the new payment is equal or higher, refinancing will not save money unless you are shortening the term or tapping equity for a specific purpose.
Q: How long should I plan to stay?
At least past the break-even point. If you move before then, you will not recover the closing costs.
Q: Are closing costs the only factor?
No. Also weigh the new term length — restarting a 30-year clock can add interest even when the rate drops.