How to use
- Replace the example inputs with your loan and property figures.
- Select Calculate to update the estimate and any schedule.
- Change one assumption at a time, then compare the result with the earlier scenario.
How this calculation works
Simple break-even is transaction costs divided by the monthly principal-and-interest reduction. It is a cash-flow shortcut. The horizon comparison instead uses accumulated interest and fees so that a change in principal repayment is not mistaken for a borrowing-cost saving.
Simple months to recover fees = fees ÷ positive monthly payment reduction
Worked example
Illustrative inputs — not a quote or a local average.
- Current principal balance
- $320,000.00
- Interest rate
- 6.5 %
- Years remaining
- 25 years
- New interest rate
- 5.75 %
- New loan term
- 25 years
- Transaction costs
- $4,500.00
- Finance closing costs
- Pay in cash
- Comparison period
- 7 years
New monthly P&I: $2,013.14. Comparison monthly P&I: $2,160.66. Monthly payment reduction: $147.52.
Reading the result
Compare break-even with how long you expect to keep this specific loan, not merely the property. A future refinance also ends the time available to recover today’s costs. If the new payment is not lower, there is no positive payment-savings break-even even when another goal justifies refinancing.
Before acting on the estimate
The simple result assumes the initial payment difference continues. It becomes less useful when one loan ends earlier, fees are financed, or the terms differ greatly. Use the horizon interest and balance figures to examine those cases.

Questions, answered
What does “Not reached” mean?
The selected new payment is not lower, so the payment-saving formula has no positive solution.
Does break-even include investment returns?
No. It ignores the alternative return on cash used for fees.