A refinance break-even calculator tells you exactly how many months it takes for your monthly savings to recover the closing costs of refinancing your mortgage. Enter your current loan details and the new rate you've been offered — the calculator instantly shows whether refinancing makes financial sense for your timeline.
Current Loan
Principal + interest only, exclude taxes/insurance
New Loan Terms
Typically 2–5% of loan balance
Enter your loan details and click
Calculate Break-Even
How to Use the Refinance Break-Even Calculator
Refinancing your mortgage can save thousands of dollars — but only if you stay in your home long enough to recoup the upfront closing costs. This refinance break-even calculator removes the guesswork by telling you exactly how many months it takes to come out ahead.
Step 1: Enter Your Current Loan Details
Start with your current loan balance (the amount you still owe, not the original loan amount), your current interest rate, and your current monthly principal and interest payment. You can find these on your latest mortgage statement or in your online lender portal. Do not include property taxes, homeowner's insurance, or PMI in the monthly payment figure — use only the principal and interest portion.
Step 2: Enter the New Loan Terms
Input the new interest rate you've been quoted by your lender, select your desired loan term (15, 20, or 30 years), and enter the estimated closing costs. Closing costs for a refinance typically run between 2% and 5% of your loan balance, covering items like the appraisal, title search, lender origination fee, and prepaid interest. Your lender should provide a Loan Estimate document with specific figures.
Step 3: Review Your Break-Even Point
The calculator divides your total closing costs by your monthly savings to determine the break-even month. If your closing costs are $7,000 and you save $200 per month, your break-even is 35 months (just under 3 years). If you plan to sell or refinance again before that point, refinancing now would cost you money — not save it.
Step 4: Consider Total Interest Saved
Beyond the monthly savings, look at the total interest saved over the full loan term. Choosing a shorter term like 15 years often means a higher monthly payment but dramatically lower total interest paid — sometimes saving more than $100,000 on a large loan. The comparison table shows both loans side by side so you can see the full picture.
When Does Refinancing Make Sense?
As a general rule, refinancing is worth pursuing when your refinance break-even point is comfortably shorter than your planned time remaining in the home. If you plan to stay for 10 more years and your break-even is 24 months, you have 8 solid years of savings. Refinancing becomes less attractive when you're already deep into your loan (most interest has been paid), when the rate difference is very small, or when closing costs are unusually high relative to your loan balance.
For a detailed walkthrough, see our guide: When to Refinance Your Mortgage.
FAQ
What is a refinance break-even point?
The break-even point is the number of months it takes for your monthly savings from a lower interest rate to fully offset the closing costs of refinancing. For example, if refinancing saves you $150/month and costs $4,500 in closing costs, your break-even is 30 months. If you plan to stay in your home longer than that, refinancing is financially beneficial.
How much do closing costs typically cost when refinancing?
Closing costs for a refinance typically range from 2% to 5% of the loan amount. On a $300,000 loan, that's $6,000 to $15,000. Common costs include lender origination fees, appraisal fees, title insurance, attorney fees, and prepaid interest. Some lenders offer no-closing-cost refinances by rolling fees into the loan balance or charging a slightly higher rate.
Is this calculator free to use?
Yes, the Refinance Break-Even Calculator is completely free with no signup, no account, and no hidden fees. All calculations run locally in your browser — your financial details are never sent to any server or stored anywhere.
Is my financial data private when using this tool?
Absolutely. All calculations happen entirely in your browser using JavaScript. No data is ever transmitted to a server, stored in a database, or shared with third parties. You can even disconnect from the internet and the tool will continue to work. Your mortgage details remain fully private.
When does refinancing NOT make sense?
Refinancing may not be worth it if your break-even point is longer than you plan to stay in the home, if closing costs are very high, if you're close to paying off your current loan, or if you're extending your loan term significantly (which can increase total interest paid even with a lower rate). Always compare the total interest paid over both loan scenarios.
What interest rate drop justifies refinancing?
A common rule of thumb is that refinancing makes sense when you can lower your rate by at least 0.5% to 1%, but it depends on your loan balance, remaining term, and closing costs. This calculator gives you the exact break-even figure for your specific situation — a small rate drop on a large balance can still produce substantial savings.
Should I choose a 15-year or 30-year term when refinancing?
A 15-year term typically offers a lower interest rate and far less total interest paid, but your monthly payment will be higher. A 30-year term lowers your monthly payment the most, providing maximum cash flow flexibility, but you'll pay more interest overall. A 20-year term is a middle ground. This calculator lets you compare all three scenarios against your current loan.