Housing & credit
When Does a Mortgage Refinance Break Even?
Compare the current loan with a refinance quote, including closing costs, term extension and the planned holding period.
Break-even begins with all refinance costs
Add lender charges, appraisal, title, recording and other closing costs, then subtract lender credits. If costs are financed, they increase the new balance and interest. Prepaid taxes, insurance and escrow funding may affect cash to close without being a true economic cost in the same way.
Our simple break-even estimate divides net closing costs and any prepayment penalty by the initial monthly payment savings. It includes financed closing costs, even when upfront cash is zero. It does not compare equity over time or fully capture a longer repayment term. Cash used to repay principal is not a fee. Classify each item using the actual disclosures.
Compare balances at the same future date
A refinance can lower the payment partly by resetting or extending the repayment period. Compare the proposed term with the years remaining on the current loan, then compare interest paid, cash paid and remaining principal at the same future date.
If the new loan requires cash to close, include the return that cash could otherwise earn only as a separate, explicit opportunity-cost assumption. Do not count it twice.
Check the risks around the quote
Confirm whether the rate is locked, whether points are included and whether the loan has a prepayment penalty or adjustable rate. Use the official Loan Estimate and later Closing Disclosure rather than a marketing estimate.
If you expect to move before the simple payment break-even, the refinance may not recover its costs, but the conclusion also depends on remaining balances and other cash flows. If cash-flow relief is the goal, evaluate that benefit separately from lifetime interest.
Bottom line
Judge a refinance by closing costs, the new balance and how long you will keep the loan, not just the lower monthly payment.
Related calculators
Sources
- CFPB: Loan Estimate and Closing Disclosure Forms (opens in a new tab)
- CFPB: Compare Loan Estimates (opens in a new tab)
This guide is for general education, not personal investment, tax, legal or financial advice. Check current rules and talk with a qualified professional when the decision calls for it.