Mortgage planning · Reviewed September 13, 2026

Mortgage Refinance Break-Even Calculator Guide 2026

Answer first: Refinance break-even is usually calculated as total refinance costs divided by monthly savings. If costs are $6,000 and savings are $250 per month, break-even is 24 months. You must expect to keep the loan beyond that point—and confirm the savings are real after taxes, insurance and term changes.

Use the break-even formula correctly

Break-even months = eligible refinance costs ÷ monthly principal-and-interest savings. A lender’s quote may show a lower payment because the new loan restarts a 30-year term. That is not the same as saving money overall. Compare the remaining term on your current loan with the new term and calculate total interest.

Start with the USFinNexus Refinance Calculator, then compare the full payment in the Mortgage Calculator. The Federal Reserve consumer refinance guide warns that prepayment penalties and refinance costs affect the time required to break even.

Which costs should you include?

Request a Loan Estimate and separate true refinance costs from items you would pay anyway. Review origination charges, points, appraisal, credit report, title and settlement services, recording charges and any prepayment penalty. Prepaid interest, property taxes and insurance escrows may affect cash-to-close but are not always an economic cost because they fund future bills.

Rate-and-term versus cash-out refinance

A rate-and-term refinance changes the rate, term or both without taking substantial equity out. A cash-out refinance increases the balance to release equity. Use a higher standard for cash-out: the new payment, additional interest and risk should be justified by the purpose of the funds.

Three mistakes that make savings look larger

• Comparing the new principal-and-interest payment with the old PITI payment.
• Ignoring points or rolling costs into the new balance.
• Resetting a nearly paid-off loan to 30 years without comparing total interest.

When refinancing may not fit

Refinancing may be unattractive if you plan to move before break-even, have little equity, face a large prepayment penalty, or would lose valuable loan terms. Ask for at least two written estimates and compare APR, cash-to-close, rate-lock terms and total interest—not just the advertised rate.

Frequently asked questions

Sources and disclaimer: General refinance mechanics were checked against the Federal Reserve’s consumer refinance guide and CFPB mortgage resources on September 13, 2026. This is educational information, not lending, tax or financial advice.