Most break even math is just closing costs divided by your monthly savings. That misses the bigger picture, since a shorter term or lower rate can save you real money even when your payment barely moves. This calculator tracks the actual interest difference month by month instead.
| Method | How it is calculated | Break Even |
|---|---|---|
| Quick math | Closing costs ÷ monthly payment savings | — |
| Actual break even | Month by month interest saved vs. closing costs | — |
The line below is your cumulative interest savings from refinancing. Break even is the month it crosses your closing costs.
Net savings if you only keep this loan 5 more years
Net savings if you keep the new loan to term
This is an estimate for planning only, based on the numbers you enter and standard amortization math. It does not account for taxes, insurance, PMI changes, opportunity cost of cash paid at closing, or the possibility of moving or refinancing again before break even. Actual figures depend on your loan estimate and closing disclosure. For real numbers based on today's rates and your situation, let's talk.
Send me your current statement and I will run the real numbers, not just a quick estimate. It's free, and there's no obligation.
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