How the mortgage-points break-even estimate works
This tool compares two fixed-rate options on the same loan amount and term, then asks how long the monthly payment savings would take to recover the additional upfront cost of the lower-rate option.
The calculator solves a payment for rate A and rate B using the same principal and term. Monthly savings equal payment A minus payment B. If the lower-rate option actually saves money each month, the simple recovery period equals the entered incremental upfront cost divided by monthly savings.
Payment at rate A − payment at rate BPositive savings mean option B has the lower modeled monthly payment.
Additional upfront cost ÷ monthly savingsReturns the number of months needed for nominal payment savings to equal the added cost.
Use the same loan amount and term for both options.
Enter the actual rate for each quote, not APR in a note-rate field.
Enter only the incremental upfront cost difference you want to recover.
Compare the break-even period with how long you expect to keep that financing.
Best used for
- Evaluating discount points
- Comparing a lender-credit option with a lower-rate option
- Checking whether a rate buydown fits the expected holding period
What this tool does not answer
- This is a simple nominal break-even, not a present-value calculation.
- It does not include tax effects, balance differences or all APR components.
- If option B does not reduce the monthly payment, a simple recovery period is not meaningful.
How to read a sample result
Illustrative example: on $300,000 for 360 months, 6.5% models at about $1,896.20 and 6% at about $1,798.65. The $97.55 monthly difference recovers an additional $3,000 upfront cost in about 30.75 months under this simple model.
The methodology below explains how this calculator treats the inputs and assumptions. Replace the sample values with your own planning figures. Results are estimates, not quotes, approvals, disclosures or recommendations.
Inputs and units
Loan amount, term, two rates and the incremental upfront cost. All currency entries are U.S. dollars. Percentage fields take a number such as 6 for six percent, not 0.06. Repayment terms marked in months use whole months; horizons marked in years use whole years.
Calculation workspace
Enter your own figures in the calculator above. The starting values are examples only. No personal identifiers are needed to run a scenario.
How to interpret the result
Read every result together with the assumptions you entered. Changing an input changes the scenario, not product availability. Displayed amounts are rounded for readability.
Assumptions and limitations
This simple ratio ignores balance differences and time value. If monthly savings are not positive, it reports no simple recovery rather than a negative break-even.
Review more than one scenario
Run a base case and then change one uncertain input at a time. Compare a shorter holding period, a higher cost or a different repayment term where those inputs are supported. Record which costs have not been entered. A precise-looking number can still rest on uncertain assumptions.
Invalid inputs and error recovery
If an input is missing or outside the calculator’s supported range, the page will ask you to correct it. Use negative values only in fields that explicitly allow them. A calculation error is not a credit decision.
Model documentation
The calculator methodology explains the inputs, assumptions and supported models. Use the result for planning and compare it with the provider’s written terms and applicable disclosures before making a decision.
Choose a product for your calculation
Use these comparisons for planning; final eligibility, pricing and terms are set by the provider.
Program references and comparison sources
CFPB: Loan Estimate explainer — Comparison of covered mortgage disclosures, cash to close, points, lender credits and monthly costs.
CFPB: Understand the different kinds of loans available — Loan structures, terms and repayment risks; not provider-specific eligibility.
Check the linked source for its effective date and applicable scope. A source link is not a lender partnership or an individual offer.