Refinance Break-Even Calculator
See how many months of lower payments it takes to recover your closing costs — and whether refinancing is actually worth it.
Find your break-even point
How to Use the Refinance Break-Even Calculator
Refinancing can lower your monthly payment — but it isn't free. You'll pay closing costs upfront (lender fees, appraisal, title costs), and the lower payment has to earn that money back before the deal is actually worth it. This calculator finds that moment: the break-even point.
Enter your current monthly principal & interest payment, the new payment your lender quoted you, and the closing costs you'd pay out of pocket. The tool instantly shows your monthly savings, how many months it takes to recover the closing costs, and your net savings over the time you plan to stay in the home.
That last part matters most. A refinance that breaks even in 3 years is a great deal if you'll stay 10 years — and a bad deal if you'll move in 2.
How the Break-Even Calculation Works
Think of refinancing as buying a discount on your monthly payment. You hand the lender a few thousand dollars today, and in return your payment drops by a couple hundred dollars each month. The break-even point is simply the moment when those monthly discounts have added up to the price you paid.
Until that month, you're still "in the red" on the deal — the refinance has cost you more than it has saved. After that month, every single payment is money in your pocket compared to staying with your old loan. That's why lenders and financial planners treat the break-even point as the number that decides whether a refinance makes sense.
Two quick cautions before you trust the number blindly. First, this comparison uses the P&I portion only — property taxes and homeowners insurance don't change when you refinance, so leave them out of both payments. Second, this is a payment-based break-even: it doesn't factor in tax deductions, PMI changes, or the fact that restarting a 30-year clock can cost more total interest even with a lower payment.
The Break-Even Formula Explained
The formula couldn't be simpler:
Break-Even (months) = Closing Costs ÷ Monthly Savings
Monthly savings is just your current payment minus the new payment. For example, $8,000 in closing costs divided by $225 in monthly savings equals about 35.6 months — call it 3 years. We round up, because you haven't truly broken even until a full month of savings has covered the last dollar of costs.
Once you have the break-even point, the net gain over your planned stay is:
Net Savings = (Monthly Savings × Months You Stay) − Closing Costs
Both formulas come from the same idea Chase, Freddie Mac, and every major lender teach: divide what you pay upfront by what you save each month. No compounding, no fancy math — just honest division.
Worked Example: $350,000 Loan at 7% → 5.75%
Step 1 — Find both monthly payments
The standard amortization formula is P = L × r(1+r)ⁿ ÷ ((1+r)ⁿ − 1), where L is the loan amount, r the monthly rate, and n the number of payments. For a $350,000 30-year loan at 7% (monthly rate 0.5833%): $2,328.56/month. At 5.75% (monthly rate 0.4792%): $2,042.50/month.
Step 2 — Monthly savings
$2,328.56 − $2,042.50 = $286.05/month. That's $3,432.60 per year staying in your pocket.
Step 3 — Break-even point
Closing costs at 2% of the loan = $7,000. Break-even = $7,000 ÷ $286.05 = 24.47 → 25 months (rounded up). Just over two years.
Step 4 — The decision
If you plan to stay 10 more years (120 months): net savings = $286.05 × 120 − $7,000 = $27,326. A clear win. If you might move in 18 months, you'd lose about $1,851 — skip the refinance.
When Refinancing Makes Sense
- Rates dropped meaningfully. The old rule of thumb — refinance when you can shave about 0.75–1% off your rate — still holds, because smaller rate cuts rarely produce enough monthly savings to beat closing costs.
- You'll stay past break-even. This is the deciding factor. A 25-month break-even is excellent for a "forever home" and terrible if a job move is likely next year.
- Your credit improved. If your score climbed since you bought, you may qualify for a much better rate than your original loan — bigger savings, faster break-even.
- You can drop PMI. If your home gained value and you now owe less than 80% of it, refinancing can remove private mortgage insurance — savings the basic payment math doesn't even capture.
- You want a shorter term. Moving from a 30-year to a 15-year loan at a lower rate builds equity dramatically faster. The monthly payment may barely change, but the interest saved over the life of the loan can be six figures.
When You Should NOT Refinance
- You'll move or sell before breaking even. The #1 reason refinances backfire. Be honest about your timeline — optimism here is expensive.
- You're deep into your current loan. In the later years of a mortgage, most of your payment goes to principal. Restarting the clock at 30 years can mean paying more total interest despite a lower rate.
- The savings are tiny. A $60/month saving against $6,000 in closing costs takes 100 months to break even. That's a bad trade unless you truly never plan to move.
- You're stretching to afford the closing costs. Rolling costs into the loan balance means paying interest on them for decades. If the only way to refinance is financing the fees, run the numbers twice.
- Your income or credit is shaky. A hard inquiry dings your score slightly, and applying when your finances are weak can land you a worse offer than the one you have.
The bottom line: refinancing is a bet that you'll stay long enough for the savings to win. The break-even number above tells you exactly how long that is — compare it honestly to your plans, and the decision usually makes itself.
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Frequently Asked Questions
What is a refinance break-even point?
Your break-even point is the number of months until your cumulative monthly payment savings equal the upfront closing costs of the refinance. Until that month you are net negative on the deal; after it, every month of savings is real gain.
How much does refinancing typically cost?
Refinancing typically costs 2% to 5% of the loan amount in closing costs, according to Freddie Mac — lender fees, appraisal, title insurance and recording fees. On a $350,000 loan that is roughly $7,000 to $17,500 paid out of pocket or rolled into the loan.
What is a good refinance rate in 2026?
A good refinance rate is generally 0.75 to 1 percentage point below your current rate — enough for the monthly savings to beat the closing costs within a few years. Rates move daily, so compare Loan Estimates from at least three lenders rather than chasing a single number.
How long must I stay to break even?
Divide your closing costs by your monthly savings to find out. For example, $7,000 in closing costs divided by $286 in monthly savings means you must stay about 25 months to break even. If you plan to move sooner, the refinance would cost you money.
Does refinancing hurt my credit score?
Applying triggers a hard inquiry that typically dings your score by a few points for a few months. Rate-shopping within a 14 to 45-day window counts as a single inquiry on most scoring models, so compare lenders quickly rather than spreading applications over months.
Sources
- Chase — Calculating the Break-Even Point When Refinancing
- BestMoney — How to Find Your Refinance Break-Even Point