Mortgage discount points are an upfront price for a lower interest rate. They can save money when the loan stays in place long enough. They can also become expensive closing costs when the mortgage is sold, refinanced, or paid off before the savings catch up.
The Mortgage Points Break-Even Calculator compares two fixed-rate quotes with the same loan amount and term: one at zero points and one with discount points.
The quick answer
Paying points becomes more attractive when the rate reduction is meaningful, the point cost is reasonable, and you expect to keep the mortgage beyond the break-even period.
Keeping the zero-point loan can make more sense when cash at closing is limited or the loan may disappear soon because of a move, sale, refinance, or early payoff.
Compare the actual quotes. There is no fixed amount of rate reduction attached to one point. The lender, loan type, and mortgage market affect the pricing.
What mortgage points are
The Consumer Financial Protection Bureau (CFPB) describes discount points as an upfront charge paid in exchange for a lower interest rate. One point equals 1% of the loan amount. A $300,000 loan therefore makes one point equal to $3,000 and three-quarters of a point equal to $2,250.
Points can be fractional. A lender might quote 0.375 points, 0.75 points, or another amount. The useful comparison is the dollar cost and the rate attached to that exact quote.
CFPB also notes that some lenders use the word "points" more loosely for percentage-based fees. On the standard Loan Estimate and Closing Disclosure, points shown in the Points line are tied to a discounted interest rate.
How break-even works
The simplest mortgage-points break-even calculation divides the cash paid for points by the monthly principal-and-interest savings.
Cash-flow break-even = Point cost ÷ monthly payment savingsIf points cost $2,250 and reduce the payment by about $73.37, the simple break-even is roughly 31 months. Before that point, the cumulative payment savings have not recovered the original cash outlay.
The holding period matters
CFPB recommends comparing mortgage options over several plausible timeframes. That advice matters especially for points because the upfront cost happens immediately while the benefit arrives gradually through a lower rate.
Think about how long you expect to keep this exact mortgage, rather than how long you expect to own the house. A refinance replaces the loan and ends the original points comparison even when you stay in the same home.
Use a shorter, longer, and most-likely holding period when the future is uncertain. A quote that looks good over 10 years can still be unattractive if there is a realistic chance the loan lasts only two years.
A complete example
Consider two 30-year fixed-rate quotes for a $300,000 loan:
- Zero points at 6.50%
- 0.75 points at 6.125%
- Point cost: $2,250
The modeled zero-point principal-and-interest payment is about $1,896.20. The lower-rate payment is about $1,822.83, a difference of roughly $73.37 per month.
Dividing the $2,250 point cost by the monthly savings produces a simple break-even of a little over 30 months, so the 31st full month is the first whole month beyond the estimate.
Someone expecting to refinance in 18 months would not reach that simple break-even under these assumptions. Someone expecting to keep the loan for seven years has much more time for the lower rate to recover the upfront cost.
Compare financing cost too
Monthly payment break-even is useful because it is easy to understand. The calculator also compares interest paid during the holding period and adds the point cost to the lower-rate option.
Principal is kept separate from financing cost because paying principal reduces the loan balance. If two loans have different rates, they can also have slightly different balances at the same future date.
This is why the calculator shows both remaining balances instead of relying only on the monthly payment difference.
Use actual Loan Estimates
A useful comparison needs two real quotes for the same loan type, loan amount, and term. CFPB recommends asking a lender to show options with and without points or credits and comparing the cash needed at closing, monthly payment, and cost over the time you expect to keep the loan.
On the Loan Estimate, discount points appear in the Loan Costs section. Confirm that the lower-rate quote shows the point percentage and dollar amount you intend to enter.
Keep unrelated lender and settlement charges separate. A lender can have a better point quote and still be more expensive overall because of other fees.
Points and lender credits move in opposite directions
Discount points generally mean paying more upfront for a lower rate. Lender credits generally reduce closing costs in exchange for a higher rate.
The current calculator focuses on the points side of that trade. If a quote includes lender credits, compare the net cash needed at closing and the higher payment separately rather than entering a credit as a negative point value.
Tax treatment is separate from break-even
The calculator does not assume a tax deduction for points or mortgage interest. Internal Revenue Service (IRS) Publication 936 explains that points are generally prepaid interest and often must be deducted over the life of the mortgage, while certain home-purchase points can qualify for different treatment when specific tests are met.
Refinancing has its own rules. Tax treatment can change the after-tax cost, but inserting a generic tax percentage into the break-even formula would create false precision.
How to use the calculator
Loan amount and term
Use the same principal and fixed term for both quotes. If the loan amounts or terms differ, the tool is no longer isolating the cost of points.
Zero-point rate
Enter the note rate on the option that charges no discount points. Do not enter the annual percentage rate (APR).
Rate after paying points
Enter the note rate attached to the point quote. If the rate is not lower, verify the quote before using the result.
Discount points
Enter the percentage shown for discount points. For example, enter 0.75 for three-quarters of a point. The calculator converts that percentage to dollars.
Expected holding period
Enter how long you expect to keep this mortgage before a sale, refinance, or payoff. The holding period cannot exceed the selected loan term.
Frequently asked questions
Does one point always reduce the rate by the same amount?
No. CFPB says the size of the rate reduction depends on the lender, loan type, and market conditions. Compare the actual rate attached to the actual point quote.
Should I compare points using APR?
APR is useful for broader loan-cost comparisons, but the calculator needs the note rates because those rates determine the principal-and-interest payments.
What if I expect to refinance soon?
Use that shorter holding period. Paying points becomes harder to justify when the loan may end before the upfront cost is recovered.
What if the point cost is rolled into the loan?
This calculator assumes points are paid in cash at closing. Financing the cost changes the loan amount and introduces interest on that added balance, so it needs a different model.
Should I spend emergency savings on mortgage points?
The calculator does not value the liquidity lost when cash is used at closing. Compare the available reserve separately, especially when the point purchase would leave little cash for repairs, deductibles, or income interruptions.
Sources and further reading
Compare the point quote with the time you expect to keep it
Mortgage Points Break-Even Calculator
Compare point cost, monthly payment savings, holding period, interest, and lifetime financing cost.
Open tool →Mortgage Refinance Break-Even Calculator
Compare a current mortgage with a proposed refinance, including closing costs and term changes.
Open tool →Ask for comparable quotes, use the holding period that reflects your real plans, and rerun the comparison when the lender changes either the points or the rate.