Is Refinancing Worth It? How to Find Your Break-Even Point
By Arshi Khan, Founder of Just4Marketing · October 26, 2026 · 6 min read
The break-even point is only half the test. A worked example of when a lower mortgage payment still costs more, how long you need to stay, and whether points pay off.
When mortgage rates fall, the question comes up fast: should I refinance? The quick answer most people reach for is the break-even point — how many months of lower payments it takes to win back the closing costs. It's a good start, but on its own it can point you toward a refinance that saves money every month and still costs you thousands. Here's how to run the full test.
Step 1: the simple break-even point
Divide your closing costs by your monthly savings. Suppose you owe $250,000 with 25 years left at 7.0%, so your principal and interest payment is $1,766.95. A lender offers 6.0%, with $5,000 of closing costs.
| New loan | New payment | Monthly savings | Break-even |
|---|---|---|---|
| 30 years at 6.0% | $1,498.88 | $268.07 | 19 months |
| 25 years at 6.0% | $1,610.75 | $156.19 | 33 months |
On this test the 30-year loan looks like the clear winner: bigger savings, and you're ahead in under two years. But it leaves out something important.
Step 2: the lifetime test
A new 30-year loan restarts the clock. You had 25 years of payments left; now you have 30. Add up everything you would still pay on each option, including the closing costs:
| Option | Lifetime result vs keeping your loan |
|---|---|
| Refinance to 30 years | About $14,500 more |
| Refinance to 25 years | About $41,900 less |
The 30-year refinance lowers the payment by $268 a month, yet costs about $14,500 more in total, because five extra years of payments outweigh the lower rate. Keeping the same end date — 25 years — saves nearly $42,000. If you want the lower payment for flexibility, you can take the 30-year loan and pay the 25-year amount anyway, but be honest with yourself about whether you will.
Step 3: how long will you keep the loan?
Break-even only matters if you stay past it. If you sell the house or refinance again after three years, the 25-year option above saves $156.19 × 36 ≈ $5,620 in payments against $5,000 of costs — you're only about $620 ahead. If there's a real chance you'll move within two or three years, a refinance with thousands in closing costs is hard to justify.
Should you pay points?
Lenders often let you buy a lower rate with discount points, each costing 1% of the loan. Paying one point ($2,500) to get 5.75% instead of 6.0% on the 25-year loan raises the monthly savings to $194.18 — but total costs rise to $7,500, so break-even moves out to 39 months. Over the full 25 years, though, the lifetime saving grows to about $50,800. Points reward people who are confident they'll keep the loan for a long time.
A refinance checklist
- Get the full closing cost from a Loan Estimate — appraisal, title, origination, and points — not just the rate.
- Compare principal and interest only. Taxes and insurance stay the same whichever loan you choose.
- Match or shorten the term if your goal is to save money, not just to lower the payment.
- Check for a prepayment penalty on your current loan; most don't have one, but some do.
- Be realistic about how long you'll stay and compare it with the break-even point.