Understanding mortgage points: how discount points work, when to buy them, and the break-even calculation
Mortgage discount points let you buy a lower interest rate by paying more at closing. Each point costs 1% of the loan amount and typically reduces your rate by 0.125–0.25%. This guide explains how points work, the exact break-even calculation, and the situations where buying points makes financial sense — and where it doesn't.
Discount points are one of the most misunderstood choices in the mortgage process. The math is simple — upfront cost ÷ monthly savings = break-even months — but the right answer depends entirely on how long you plan to keep the loan. Here is how to calculate it for your situation.
Points vs rate: quick reference
| Points paid | Rate (example) | Monthly payment ($400k, 30yr) | Monthly savings vs 0 pts | Break-even (months) |
|---|---|---|---|---|
| −1 pt (lender credit) | 7.375% | $2,762 | −$33 (costs more) | N/A — use if staying <5 yrs |
| 0 pts | 7.125% | $2,695 | — | — |
| 0.5 pts ($2,000) | 7.00% | $2,661 | $34/mo | 59 months (5 yrs) |
| 1 pt ($4,000) | 6.875% | $2,627 | $68/mo | 59 months (5 yrs) |
| 2 pts ($8,000) | 6.625% | $2,560 | $135/mo | 59 months (5 yrs) |
Rate reductions are illustrative at 0.125% per 0.5 pts. Add 10–15% to break-even months for opportunity cost on the upfront payment.
Step-by-step: how to evaluate mortgage points
- 1Understand what mortgage points are
A mortgage discount point is an upfront fee paid to the lender at closing in exchange for a lower interest rate — sometimes called "buying down the rate." One point = 1% of the loan amount. On a $400,000 loan, one point = $4,000. The rate reduction per point varies by lender and market conditions, but typically ranges from 0.125% to 0.25% per point. Points are separate from origination points (lender fee for processing the loan) — always ask which type you are being quoted. Points appear on your Loan Estimate in Section A: Origination Charges.
- 2Get the exact rate and cost for each point option
Ask your lender for a rate sheet or "pricing grid" showing the rate at 0 points, 0.5 points, 1 point, and 2 points. The relationship is linear — doubling the points typically doubles the rate reduction. Example: 0 pts = 7.25%; 0.5 pts = 7.125%; 1 pt = 7.00%; 2 pts = 6.75%. Confirm that the rate reduction per point is consistent (watch for diminishing returns at higher point counts). Also ask about negative points (lender credits) — paying a higher rate in exchange for the lender covering closing costs.
- 3Calculate your monthly savings from the lower rate
Subtract the lower-rate monthly payment from the higher-rate payment. Example: $400,000 loan, 30 years. At 7.25%: $2,729/month. At 7.00% (1 point, -0.25%): $2,661/month. Monthly savings: $68/month. This is the "payback unit" you will use in the break-even calculation. The savings are pre-tax; if you itemize deductions and claim mortgage interest, the after-tax savings are slightly lower (but the upfront point cost may also be partially deductible).
- 4Calculate the break-even month
Break-even = point cost ÷ monthly savings. Example: 1 point on $400,000 = $4,000 ÷ $68/month = 59 months (approximately 5 years). After 5 years, the lower rate starts saving you net money. Before 5 years, you are underwater on the trade. The critical question: how long do you plan to stay in the home and keep this mortgage? If you sell, refinance, or pay off the loan before the break-even, the points were not worth buying.
- 5Adjust for the time value of money
The simple break-even ignores the fact that $4,000 paid today is worth more than $68/month recovered over 59 months. A more accurate break-even accounts for what you could earn by investing the $4,000 instead (opportunity cost). At 5% annual investment return, $4,000 grows to ~$4,200 in year 1. Your actual break-even is longer than the simple calculation suggests. Rule of thumb: add 10–15% to your simple break-even month count to account for opportunity cost — so 59 months becomes 65–68 months. For most buyers, a 5–7 year intended hold is the minimum for points to make financial sense.
- 6Check if points are tax-deductible
Discount points paid on a home purchase (your primary or secondary residence) are generally deductible in the year paid if they meet IRS criteria: the loan is secured by your home, it is customary in your area to pay points, and the points are not paid for specific services. Points paid on a refinance must be deducted ratably over the life of the loan (not all in year one). See <a href="https://www.irs.gov/taxtopics/tc504" target="_blank" rel="noopener noreferrer">IRS Topic 504 — Home mortgage points</a> for the full deductibility criteria. The deduction is only valuable if you itemize (schedule A) rather than taking the standard deduction.
When points make sense vs when to skip them
- You plan to stay in the home 7+ years
- You are not planning to refinance when rates drop
- You have excess cash above 20% down
- You want guaranteed payment reduction (vs speculative rate drop)
- You are purchasing your forever home or long-term investment property
- You expect to sell, move, or refinance within 5 years
- You are cash-constrained at closing
- The break-even exceeds your planned hold period
- You have PMI to eliminate — put extra cash toward 20% instead
- Current rates are expected to fall and you plan to refinance
External references
- CFPB — Loan Estimate: understanding origination charges (Section A)
- CFPB — Explore and compare mortgage rates
- IRS Topic 504 — Home mortgage points tax deductibility
- Freddie Mac — Primary Mortgage Market Survey (rate trends)
- Fannie Mae — Economic and housing market forecast
Common questions
How much does one mortgage point reduce my interest rate?
One discount point typically reduces your rate by 0.125% to 0.25% depending on the lender, loan type, and market conditions. The reduction is not standardized — always ask for the exact rate/point tradeoff for your specific loan. In 2027, with rates around 6.5–7.25%, expect roughly 0.125–0.20% per point. Jumbo loans and non-conforming products may offer different tradeoffs. Compare quotes from at least 3 lenders using the CFPB rate comparison tool.
What is the difference between discount points and origination points?
Discount points are prepaid interest — you pay upfront to reduce your rate. They appear in Section A of the Loan Estimate under "Points." Origination points (or origination fee) are a lender fee for processing and underwriting the loan — they do not reduce your rate. Both are expressed as percentages of the loan amount, and both appear in Section A. When comparing lenders, make sure you are comparing equivalent structures: "1 point" at Lender A might be a discount point while "1 point" at Lender B is an origination fee. The CFPB Loan Estimate guide explains how Section A is structured.
Should I buy points or put more money toward the down payment?
Compare the returns: buying points reduces your rate (and monthly payment) over time. Putting the same money toward a larger down payment reduces your loan balance immediately, eliminating PMI sooner (if applicable) and reducing interest on a lower balance. For buyers with less than 20% down, eliminating PMI typically beats buying points because PMI elimination saves $150–300/month — a faster payback than a rate buy-down. For buyers already at 20%+ down, the comparison is closer. Run both scenarios through the mortgage calculator with and without the extra down payment.
Can I finance mortgage points into the loan?
No — discount points cannot be rolled into the loan balance on a standard purchase mortgage. They must be paid in cash at closing. On a refinance, points can sometimes be financed, but this defeats the purpose (you are paying interest on the points themselves, which negates much of the savings). If you do not have the cash for points at closing, lender credits (negative points) are a better option — you accept a slightly higher rate in exchange for the lender covering some or all of your closing costs.
What are lender credits (negative points) and when should I use them?
Lender credits are the opposite of discount points: you accept a higher interest rate in exchange for the lender giving you cash toward closing costs. Example: at 7.00% with no credits, your closing costs are $8,000. At 7.25%, the lender provides $4,000 in credits — reducing your out-of-pocket at closing to $4,000. Credits make sense when: (1) you are cash-constrained and need to minimize upfront costs; (2) your break-even on points is longer than your expected hold period; (3) you plan to refinance within 2–3 years. Read the full mortgage points glossary entry.
Are mortgage points worth buying in 2027?
In 2027 with rates at 6.5–7.25% and many buyers expecting rates to decline over the next 3–5 years, buying points carries refinance risk — if rates drop 1%+ and you refinance, you lose the unused portion of your point investment. A reasonable rule: only buy points if you are confident you will hold the mortgage for at least 7 years. If you plan to refinance when rates drop (a common strategy in 2027), lender credits or zero-point loans are often more flexible. The Freddie Mac PMMS survey tracks rate trends to help inform your timing.
Run your own break-even calculation on the mortgage calculator, compare rates with and without points, or read the mortgage points glossary entry and the rate lock strategy guide.