Considering a Refinance? Start by Calculating Your Break-Even

Refinancing is back in focus. Homeowners who locked in mortgages near the peak of 2023, when rates approached 8%, are now looking at a market where the 30-year fixed has spent much of 2026 in the mid-6% range. A brief move below 6% earlier in the year also showed how quickly a better rate can surface. Even so, a lower rate by itself does not make refinancing a good deal. The key calculation is the break-even point.

The formula

Refinancing comes with costs. Between lender charges, title services, appraisal fees and other expenses, closing costs often add up to 2% to 5% of the loan amount. The break-even point tells you how long it will take for your monthly savings to offset those upfront costs:

To compare accurately, use principal and interest on the same remaining balance. Do not compare the old payment with a new one that simply stretches the loan back to a 30-year term.

A worked example

Suppose you still owe $400,000 on a loan at 7.75% and can refinance at 6.5%. That change would save about $340 a month in principal and interest. If closing costs are $8,000:

If you stay in the home and keep the loan beyond two years, the refinance begins producing real savings, more than $4,000 a year. But if you sell or refinance again at month 18, the transaction would have cost you money, no matter how attractive the new rate seemed.

The bigger question

The break-even point only matters in light of how long you expect to keep the mortgage. If you plan to move within a year, very few refinances make sense. If you expect to stay put for the long term, even a small rate cut can eventually pay off. It is also worth considering a third timeline: how soon you might refinance again. In an environment where rates are expected to drift rather than plunge, refinancing repeatedly means paying closing costs more than once, which pushes the true break-even farther out each time.

Details the formula may miss

Be prepared before the window opens

The brief sub-6% opportunity earlier in the year lasted only weeks, not months, and the borrowers who captured it were the ones who had documents ready and lenders already lined up. Figure out your break-even math now, decide in advance what rate would make a refinance worthwhile, and be ready to act quickly when the market reaches that number instead of starting your research from scratch. A fuller look at who benefits from refinancing at current rates and who should wait is covered in Should You Refinance in 2026?

Considering a Refinance? Start by Calculating Your Break-Even