How do I calculate mortgage refinance break-even?

Divide the refinance costs you are trying to recover by the monthly savings attributable to the new loan. Compare that number of months with how long you expect to keep the refinance.

Does a lower refinance payment always save money?

No. A lower payment can come from a lower rate, a lower balance, removing mortgage insurance, or restarting the loan with a longer term. Compare total cost and timeline, not payment alone.

What costs belong in refinance break-even?

Include lender-controlled charges and other closing costs you expect the monthly savings to recover. Treat financed costs as costs even when they are added to the loan instead of paid in cash.

Refinance decision guide

A refinance makes sense when the savings fit the cost and your timeline.

A lower rate or payment is only the beginning. Calculate how long it takes to recover the refinance costs, then check whether the new term, balance, mortgage insurance, and cash position still support the decision.

Reviewed by LenderCity Editorial Mortgage Team · Updated July 27, 2026

The direct answer

Simple break-even months = recoverable refinance costs divided by monthly savings.

If the break-even arrives after you expect to sell, refinance again, or pay off the loan, the transaction may not recover its cost. A shorter break-even is not automatically approval or proof that refinancing is best.

Worked example

Put the timeline next to the monthly savings.

If the refinance costs $6,000 and reduces the relevant monthly payment by $200, the simple break-even is 30 months. If you expect to keep the new loan for five years, that leaves time after break-even. If you expect to move in two years, the costs may not be recovered.

Count costs even when financed

Rolling costs into the loan can reduce cash due at closing, but it does not make those costs disappear. It can also increase the new balance.

Do not let a restarted term hide cost

A new 30-year loan can lower the payment partly by spreading repayment over more years. Compare remaining term and total cost, not only the payment.

Separate P&I from escrow changes

Taxes and insurance can change independently of the refinance. Use comparable payment components when measuring savings.

Include mortgage insurance changes

Adding or removing mortgage insurance can materially change payment and break-even. Confirm the program and equity assumptions.

What changes the answer

Break-even is a decision aid, not the whole decision.

Your current loan balance, rate, remaining term, and mortgage insurance
The new loan amount, rate, APR, term, points, credits, and lender-controlled fees
Whether closing costs are paid in cash or added to the balance
How long you expect to keep the new mortgage
Cash-flow goals, debt consolidation risk, and any cash-out use

This calculation is educational. A licensed mortgage lender should confirm the loan terms, costs, eligibility, payment, and disclosures before you rely on the result.

Official sources

Review refinance costs and options

Reviewed and updated July 23, 2026 by the LenderCity Editorial Mortgage Team.