Refinance Break-Even, Explained
Last reviewed September 25, 2026
A refinance pays for itself when your cumulative monthly savings finally exceed what you paid to get the loan. The number to compute is the break-even point: total closing costs divided by monthly savings. If the result is 26 months and you plan to keep the loan for 5 years, it's a good deal. If it's 26 months and you plan to move in 18, it's a loss.
The basic math
Break-even months = refinance closing costs ÷ monthly payment savings. Closing costs include lender fees, appraisal, title, and points — every dollar due at closing, whether you pay it in cash or roll it into the balance. Monthly savings are the difference between your current principal-and-interest payment and the new one, measured on the same balance basis (CFPB recommends comparing Loan Estimates line by line rather than trusting an advertised “payment.”).
Worked example (illustrative, not a market quote): $8,000 in closing costs ÷ $320/month saved = 25 months to break even. Stay 4+ years and you're $7,400 ahead; move in year one and you never recover the costs.
Three traps that fake the savings
- The term reset. Dropping your rate but restarting a 30-year term can lower the monthly payment while you pay far more total interest over the life of the loan. Compare against the months you have left, not the original term.
- Rolled-in costs. Rolling closing costs into the balance reduces your out-of-pocket but raises the amount you're financing — compute break-even on the full rolled-in amount, not zero.
- “No-closing-cost” refis. Costs don't disappear; they're paid via a higher rate or lender credits. Run the break-even both ways — cash-in at the lower rate vs no-cost at the higher rate — and see which wins over your horizon.
When a break-even never happens
If the new rate only saves $40–60/month against thousands in costs, the break-even can stretch past the time you'll keep the loan — or past a planned move. Refinancing for a shorter term (e.g. 30→15) often shows a higher payment but a much lower lifetime cost; that's a savings decision, not a payment decision, and the break-even lens doesn't capture it directly.
Run your own numbers
The refinance calculator computes the break-even month from your rate, balance, term, and closing costs. If you're weighing a shorter term, the mortgage payoff calculator shows the interest saved, and mortgage points covers the pay-for-rate math inside the closing-cost side of the same decision. Related guides: when does buying beat renting and PMI, decoded.