Refinance Break Even Calculator
Refinancing replaces your current mortgage with a new one at different terms, and the break-even point is when cumulative monthly savings equal the closing costs you paid. Until you reach that month, the refinance is a net loss. After it, every month of lower payments is pure gain. Enter your current and proposed terms above to find your break-even month.
Now, and the offer
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- Payment now
- $0.00
- Payment after
- $0.00
- Saved each month
- $0.00
- Closing costs
- $0
- Interest over the full life
- $0
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A positive lifetime figure means the new loan costs more in total interest even though the monthly payment fell — usually because the term restarted. Both numbers matter.
How the Break-Even Calculation Works
The core formula is straightforward: divide total closing costs by the monthly payment reduction. If closing costs are $4,500 and you save $150 per month, you break even at month 30. Any time you remain in the home beyond that point, the refinance pays for itself.
Where borrowers trip up is overlooking items that change the math. Prepaid interest, escrow funding, title insurance, and appraisal fees all belong in the closing-cost total. Leaving out even one fee flatters the break-even number and can lead to a premature decision. The calculator includes fields for each category so nothing gets buried.
Another subtlety is the remaining term. Refinancing a loan that has 22 years left into a new 30-year term lowers the payment but extends total interest. The break-even month may look quick, yet the long-run cost may be higher. Compare the total interest on both paths, not just the monthly figure.
Factors That Shift the Timeline
How long you plan to keep the property is the single largest variable. If you expect to sell within three years, a 36-month break-even is too tight — transaction delays or market shifts could erase the savings. On the other hand, homeowners who plan to stay a decade or more can tolerate a longer break-even because the cumulative savings dwarf the upfront cost.
Repeated refinancing introduces a chain problem. Each refi resets the break-even clock and layers new closing costs onto the loan's history. Before acting on a rate dip, check whether the savings from the latest refi justify restarting rather than continuing to benefit from the prior one.
For a broader view, pair this tool with the should I refinance decision calculator or the no-closing-cost refinance comparison to explore whether rolling fees into the rate shortens or lengthens your effective payback period.
Monthly savings shown are estimates based on the rates and terms you enter. Actual closing costs vary by lender, location, and loan size.