Refinancing without calculating your break-even point is a financial error. Lenders benefit from every refinance regardless of whether it helps you — they collect new origination fees and reset your amortization schedule. This guide gives you the exact formula to determine whether refinancing produces a net financial gain in your specific situation.
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The break-even point is the month in which your cumulative monthly savings equal your total refinance closing costs. Before that month, refinancing has cost you money. After it, refinancing saves you money.
Formula
Break-Even Month = Total Closing Costs / Monthly Payment Savings
If you plan to stay in the home beyond the break-even month, refinancing produces a net financial gain.
Example Calculation
$350,000 loan — refinancing from 7.5% to 6.75% — $8,000 closing costs
Lenders frequently advertise refinance options with vague or understated cost disclosures. The actual closing costs on a refinance typically range from 2% to 5% of the loan amount and include the following line items:
| Cost Item | Typical Range |
|---|---|
| Loan origination fee | 0.5% – 1.5% of loan |
| Appraisal fee | $400 – $700 |
| Title search and insurance | $700 – $1,500 |
| Credit report fee | $25 – $75 |
| Attorney or settlement fee | $500 – $1,500 |
| Prepaid interest (per diem) | Varies by closing date |
| Recording fees | $50 – $500 |
No-closing-cost refinances do not eliminate closing costs — they transfer them. Lenders recover the costs through one of two mechanisms: rolling the costs into the new loan balance, which increases the principal you owe and the interest you pay on it, or accepting a higher interest rate (typically 0.25% to 0.375% above the par rate) in exchange for lender credits that cover the closing costs.
A no-closing-cost refinance is rational when you plan to sell or refinance again within 3 to 4 years, because the break-even point is immediate but the rate premium accumulates as long as you hold the loan.
A critical and frequently overlooked cost of refinancing is amortization restart. In the early years of a mortgage, the vast majority of each payment is interest rather than principal. When you refinance into a new 30-year loan after several years of payments, you restart this front-loaded interest structure.
A borrower who is 7 years into a 30-year mortgage and refinances into a new 30-year loan will make mortgage payments for 37 total years rather than 30. Even if the monthly payment decreases, the extended timeline can increase total lifetime interest paid. Refinancing into a 20-year or 15-year loan avoids this problem by maintaining or accelerating the payoff timeline.
| Loan Balance | 0.25% Rate Drop Saves | 0.50% Rate Drop Saves | 1.00% Rate Drop Saves |
|---|---|---|---|
| $150,000 | $19/mo | $38/mo | $76/mo |
| $250,000 | $32/mo | $64/mo | $127/mo |
| $350,000 | $45/mo | $89/mo | $178/mo |
| $500,000 | $64/mo | $127/mo | $254/mo |
How do you calculate the refinance break-even point?
Divide your total closing costs by your monthly payment savings. If closing costs are $6,000 and you save $200 per month, your break-even point is 30 months. If you plan to stay in the home beyond 30 months, refinancing is financially beneficial.
What are typical refinance closing costs?
Refinance closing costs typically range from 2% to 5% of the loan amount. On a $300,000 loan, expect $6,000 to $15,000 in closing costs including origination fees, appraisal, title insurance, and prepaid items.
Is it worth refinancing to save $100 a month?
It depends on your closing costs and how long you plan to stay. If closing costs are $5,000 and you save $100 per month, your break-even point is 50 months. If you plan to stay longer than 4 years, refinancing makes financial sense.
What is a good interest rate reduction to refinance?
The traditional rule of thumb is 1% or more. However, even a 0.5% reduction can be worthwhile on larger balances or when closing costs are low. Always calculate your specific break-even point rather than relying on general rules.
Should I refinance to a 15-year or 30-year loan?
Refinancing to a 15-year loan increases your monthly payment but dramatically reduces total interest and builds equity faster. A new 30-year loan lowers your payment but restarts the amortization clock, potentially increasing lifetime interest paid.
Figures on this page are for educational purposes only. Actual refinance costs, savings, and break-even timelines depend on lender-specific fees and current market rates. Truly Free Mortgage Calculator does not collect personal data and does not connect users with lenders.