Complete guide
Mortgage Points Calculator: formula, example and decision guide
Compare upfront discount-point cost with monthly payment savings and break-even time. The result updates instantly and keeps every assumption visible.
What the Mortgage Points Calculator measures
Compare upfront discount-point cost with monthly payment savings and break-even time.
Use the result to compare scenarios built from the same definitions and time period.
Formula and variables
The calculator applies point cost = loan × points ÷ 100; break-even = point cost ÷ monthly payment savings. Each variable is entered in a labeled field and remains visible beside the answer.
point cost = loan × points ÷ 100; break-even = point cost ÷ monthly payment savingsWorked example
One point on a $400,000 loan costs $4,000; savings depend on the quoted rate reduction.
Change one input at a time to see which assumption has the greatest effect on the result.
How to interpret the result
Read the main result together with the detailed rows; the headline number alone does not describe every cost, unit or assumption.
Save comparable scenarios with the copy, link, CSV or PDF controls.
Assumptions and limitations
Lender pricing, APR, taxes, deduction eligibility, refinance or early sale can change the decision.
Real contracts, measurements, platform rules and professional standards can add inputs that this general-purpose model does not infer.
Accuracy checklist
Confirm units, time periods, fees and source figures before relying on the output.
Round the displayed answer only after the calculation; intermediate values retain full precision.
Calculation audit
| Item | What to review |
|---|---|
| Inputs | Loan amount, Loan term (years), Rate without points (%), Discount points, Rate reduction per point (%) |
| Equation | point cost = loan × points ÷ 100; break-even = point cost ÷ monthly payment savings |
| Example | One point on a $400,000 loan costs $4,000; savings depend on the quoted rate reduction. |
| Limit | Lender pricing, APR, taxes, deduction eligibility, refinance or early sale can change the decision. |
Frequently asked questions
What does this Mortgage Points Calculator calculate?
Compare upfront discount-point cost with monthly payment savings and break-even time.
Which formula does it use?
point cost = loan × points ÷ 100; break-even = point cost ÷ monthly payment savings
Does it calculate while I type?
Yes. Valid changes update the result automatically without reloading the page.
Which inputs should I verify?
Verify every unit, period, rate and fee against the source you are modeling.
Is the result exact?
Lender pricing, APR, taxes, deduction eligibility, refinance or early sale can change the decision.
Can I save or share the result?
Yes. Copy, native sharing, WhatsApp, PDF/Print, CSV, comparison and parameterized links are available.
What to keep in mind
Lender pricing, APR, taxes, deduction eligibility, refinance or early sale can change the decision.
Results display up to 8 decimal places; exported numbers preserve calculation precision. This is a calculation summary, not an official certificate.