When Does Refinancing Make Sense?
Refinancing sounds simple — get a lower rate, save money. But a refinance isn't free, and in 2026's rate environment the old rules of thumb will steer you wrong. There's really only one number that decides it: your break-even point.
The one formula that matters
Refinancing means taking out a new loan to pay off the old one, and that comes with closing costs — typically 2%–5% of the loan (AnnieMac). The break-even point tells you how many months of lower payments it takes to earn those costs back. Pay $6,000 to save $200/mo and you break even at 30 months (MortgageCalculatorTools). The refinance calculator runs this instantly.
The break-even sweet spot
Most lenders and financial planners want to see a break-even under 36 months — and a "strategic" 2026 refinance usually targets 18–24 months (AnnieMac). Here's the logic:
- Under 36 months: worthwhile if you plan to stay put.
- Over 60 months: weak — life intervenes, and many people move or refinance again before they collect (MortgageCalculatorTools).
The break-even only pays off if your holding period is longer than it. If you'll sell before you break even, the refinance loses money.
Why the old 1% rule is dead
For years the rule was "refinance if you can drop your rate by 1%." That's outdated (Amerisave). With 30-year rates around 6.5% in 2026 and roughly 83% of homeowners already locked below 6%, a simple rate-and-term refinance doesn't help most people (Amerisave). The practical dividing line today:
- Current rate at or above 7%: almost always worth running the numbers.
- Current rate between 6.4% and 6.75%: closing costs usually swallow the savings (MortgageLoans.net).
- Already below 6%: the math rarely works.
Reasons to refinance that aren't about rate
Rate-and-term isn't the only reason to refinance. Investors often refinance to pull cash out — the entire back end of the BRRRR strategy depends on a cash-out refinance to recycle capital. Others refinance to drop FHA mortgage insurance, shorten their term, or convert an adjustable rate to fixed. In those cases the break-even math still applies, but the goal is different from just shaving the rate.
The bottom line
Ignore the rules of thumb. Calculate your break-even, compare it honestly to how long you'll keep the loan, and refinance only if you'll stay past that point. Run your current rate, new rate, and closing costs through the refinance calculator to see your exact break-even before you commit.
Ready to run your own numbers?
Open the Refinance Calculator →