Refinance Calculator
Determine if refinancing your mortgage or loan makes financial sense. Compare current monthly payments and remaining interest against new loan terms, factoring in closing costs and break-even months.
Mortgage Refinance & Break-Even Calculator
Compare current vs new loan payments, lifetime interest savings, and recoup timeline
Current vs New Loan
Refinance Loan Breakdown
Mortgage Refinancing: Break-Even Timelines, Closing Costs & Rate Drops
Refinancing replaces an existing home mortgage with a brand new loan contract featuring new terms, a modified loan balance, or an adjusted interest rate. The central question of any refinance is determining your Break-Even Point: the exact number of months required for monthly interest savings to recoup upfront closing fees.
Calculating Your Exact Break-Even Point
To compute your break-even horizon:
Break-Even Months = Total Closing Costs ($) / Monthly Payment Savings ($)
For example, if refinancing from 7.25% down to 5.75% lowers your monthly mortgage payment by $240, and total lender closing fees amount to $4,800:
Break-Even = $4,800 / $240 = 20 Months (1.67 Years)
If you plan to reside in the property for longer than 20 months, the refinance is mathematically accretive and generates ongoing monthly savings.
Step-by-Step Instructions
Enter Current Mortgage Details
Input your existing mortgage principal balance, current interest rate, and remaining loan term in years or months.
Specify New Loan Terms
Enter the proposed new loan interest rate, new repayment term (e.g., 15 or 30 years), and total closing costs.
Select Closing Cost Financing
Choose whether to pay closing costs out-of-pocket at closing or roll them into the new loan principal balance.
Calculate Breakeven Horizon
Review monthly payment savings, total lifetime interest differential, and the exact breakeven month where savings surpass closing fees.
Key Features & Capabilities
- Exact Refinance Breakeven formula: $\text{Breakeven Months} = \frac{\text{Total Closing Costs}}{\text{Monthly Payment Savings}}$
- Rate-and-Term Refinance vs Cash-Out Refinance equity extraction modeling
- Side-by-side lifetime amortization comparison showing cumulative interest before and after refinancing
- Private Mortgage Insurance (PMI) removal analysis when loan-to-value (LTV) drops below 80%
Frequently Asked Questions
What is the breakeven point on a mortgage refinance?
The breakeven point is the number of months required for your monthly mortgage payment savings to equal the total closing costs of the new loan: Breakeven Months = Total Closing Costs / Monthly Savings. For example, if refinancing costs $4,500 in closing fees and saves $150 per month, your breakeven point is $4,500 / $150 = 30 months (2.5 years).
What is the difference between a Rate-and-Term Refinance and a Cash-Out Refinance?
A Rate-and-Term Refinance changes the interest rate, loan duration (e.g., switching from a 30-year to a 15-year mortgage), or both, without changing the principal loan balance. A Cash-Out Refinance replaces the existing mortgage with a larger loan balance, allowing the homeowner to extract accumulated home equity as a lump sum of tax-free cash.
How much must interest rates drop to make refinancing worthwhile?
While a traditional rule of thumb suggested refinancing only if rates drop by at least 1.0% to 2.0%, modern financial analysis shows that even a 0.50% to 0.75% rate reduction can be highly profitable on larger loan balances ($300,000+) if you plan to stay in the home beyond the breakeven period.
What closing costs are associated with refinancing a home mortgage?
Refinancing closing costs typically range between 2% and 5% of the new loan principal. Fees include lender origination charges, home appraisal fees ($400–$800), title search and title insurance, credit report fees, recording fees, and initial escrow funding for property taxes and hazard insurance.
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