Reviewed September 9, 2026 · Use a current lender quote for rate and fee assumptions
Refinance Savings Calculator
See your break-even point and total lifetime savings from refinancing your mortgage.
Current Mortgage
A lower payment can still cost more over the full loan. Compare lifetime net savings and your planned holding period.
New Loan Terms
Rate reduction: 1.250%
Typically $3,000-$6,000 (1-3% of loan amount)
Refinance costs, savings and break-even guide
Quick answer: A simple refinance break-even period is upfront refinance cost divided by monthly payment savings. Also compare the new term, total projected interest, cash-out, financed costs and how long you expect to keep the mortgage.
Include the full cost
Use lender and third-party charges from a current Loan Estimate. Points, lender credits and financed fees change the comparison.
Do not reset the clock blindly
A new 30-year loan may lower the payment while extending repayment. Compare it with the remaining term of the current loan.
Rates are quote-specific
Enter a current quote for the loan type, credit profile, points and lock period you are evaluating. A market average is not an offer.
Scenarios to calculate
- $6,000 cost and $300 monthly savings produces a simple 20-month break-even.
- Compare rate-and-term refinance with cash-out refinance.
- Test paying costs in cash versus financing them into the balance.
Next: review refinance closing costs, understand break-even analysis, review current rate context.
How to Use a Mortgage Refinance Calculator
A mortgage refinance calculator compares your current loan with a proposed new loan. The most useful outputs are the monthly principal-and-interest change, estimated upfront costs, a simple break-even period and the effect of changing the remaining loan term.
Break-even is useful, but it is not the whole decision
A simple break-even estimate divides upfront refinance costs by monthly payment savings. It does not automatically account for extending the loan term, cash taken out, taxes, opportunity cost or differences in total interest. Compare the full remaining cost of both loans when those factors matter.
Use your actual quoted rate and fees
Mortgage rates change over time and vary by borrower, property, loan type, points and lender. Enter the rate and closing costs from a current quote rather than relying on a generic market average.
Related tools
Use the Mortgage Calculator for a payment estimate, the Mortgage Amortization Calculator to compare payoff schedules, and the Mortgage Points Calculator for discount-point break-even scenarios.
Reviewed: August 7, 2026. Estimates are educational and are not a lender quote or financial advice.
Mortgage Refinance Calculator FAQs
How is a refinance break-even period calculated?
A simple break-even period divides upfront refinance costs by the monthly payment savings. For example, $4,000 of costs divided by $200 of monthly savings equals 20 months. This simple measure does not capture every economic effect of refinancing.
Does a lower mortgage rate always mean I should refinance?
No. Closing costs, points, the new loan term, how long you expect to keep the loan, cash-out, and changes in total interest can all matter. Compare the complete scenarios rather than the rate alone.
What rate should I enter?
Use the rate from a current lender quote for the loan structure you are considering. Market averages are useful for context but are not individualized offers and can become stale quickly.
What refinance costs should I include?
Include the lender and third-party costs you expect to pay to obtain the new loan. Some charges may be financed or offset by lender credits, which changes the economics. Use the actual Loan Estimate when available.
Should I compare the remaining term of my current loan?
Yes. Replacing a loan with a new longer term can reduce the monthly payment while extending repayment. Compare remaining balance, remaining term, new term, costs and total projected interest rather than monthly payment alone.
Continue your financial research
Use these closely related USFinNexus guides and tools to plan your next step.
A rate reduction alone does not settle the decision. Read when refinancing can make financial sense.
Program rules differ, so check FHA, VA and USDA streamline refinance options before assuming the same process applies.
Related guides
Related calculators
- Mortgage CalculatorEstimate payment, interest and amortization.
- Closing Costs CalculatorPlan buyer and seller costs before closing.
- HELOC CalculatorExplore home-equity borrowing and payments.
Illustrative comparison scenarios
| Upfront cost | Monthly saving | Simple break-even |
|---|---|---|
| $2,000 | $200 | 10 months |
| $3,000 | $200 | 15 months |
| $4,000 | $200 | 20 months |
| $5,000 | $200 | 25 months |
| $6,000 | $200 | 30 months |
Educational scenarios, not quotes, approvals, investment forecasts or tax advice. See methodology and limitations.