How to Calculate Your Refinancing Break-Even Point
The break-even point on a refinance is simply your total closing costs divided by your monthly savings. If closing costs are $4,000 and you save $150 per month, you break even in 27 months. Refinancing is only worth it if you plan to stay in the home beyond that point.
What Is the Break-Even Point?
The refinancing break-even point is the number of months it takes for your accumulated monthly savings to equal the closing costs you paid upfront. Before that point, refinancing has cost you money. After it, every month puts cash back in your pocket.
The formula is straightforward:
Break-even months = Total closing costs ÷ Monthly payment savings
A Worked Example
Suppose you have a $300,000 mortgage at 7.5% with 25 years remaining. You can refinance to 6.5%, and your lender quotes $4,000 in closing costs.
- Current payment: ~$2,217/month (principal + interest)
- New payment at 6.5%: ~$2,067/month
- Monthly savings: $150
- Break-even: $4,000 ÷ $150 = 27 months (2 years and 3 months)
If you plan to stay in the home for at least three years, refinancing makes mathematical sense. If you expect to move or sell within two years, paying $4,000 upfront to save $150/month is a losing trade.
Calculate Your Refinance Break-Even
Enter your current loan details and new rate to see your exact payback period
Factors That Change the Calculation
Closing costs are the biggest variable. Shop at least three lenders, because origination fees and third-party costs vary widely. A $1,000 difference in closing costs shifts your break-even by roughly 7 months at $150/month savings.
Rate reduction size drives monthly savings. A 0.5% rate drop on a $300,000 loan saves roughly $90–$100/month. A 1% drop saves roughly $180–$200/month.
Remaining loan term matters because refinancing resets your amortization clock. If you are 10 years into a 30-year loan and refinance to a new 30-year mortgage, you will pay less per month but extend your payoff date by 10 years — and pay significant additional interest over the long run. Refinancing into a 20-year term instead preserves your payoff timeline.
Tax implications can adjust the real savings if you itemize deductions, since mortgage interest is deductible. Most homeowners take the standard deduction, so this is a minor consideration for the majority of borrowers.
Key Takeaways
- Break-even = closing costs ÷ monthly savings; a common result is 18–36 months.
- Only refinance if you plan to stay beyond your break-even point.
- Rolling costs into the loan avoids upfront expense but slightly reduces monthly savings.
- Refinancing into a longer term can lower your payment while increasing total interest paid.
What closing costs should I expect when refinancing?▾
Refinance closing costs typically run 2%–5% of the loan amount. Common line items include origination fees, appraisal ($300–$700), title search and insurance, recording fees, and prepaid escrow items. On a $300,000 refinance, expect $6,000–$15,000 in closing costs. Some lenders offer no-closing-cost refis, but those costs are rolled into a higher rate instead.
Does the break-even calculation change if I roll closing costs into the loan?▾
Yes. When you roll costs into the loan balance, you avoid out-of-pocket expense but pay interest on those costs for the life of the loan. Your monthly savings will also be slightly lower because your new balance is higher. A refinance calculator that accounts for the new loan balance gives you a more accurate break-even timeline in this scenario.