A mortgage discount point is prepaid interest — you pay 1% of your loan amount upfront at closing in exchange for a lower interest rate, typically 0.20-0.25% lower per point depending on the lender and market conditions. On a $350,000 mortgage, one point costs $3,500. Two points cost $7,000. The question isn't whether this is a legitimate transaction — it is — but whether the upfront cost is worth the ongoing monthly savings, given your specific plans for the home and the current interest rate environment.
This calculation matters more in a high-rate environment than it did when rates were 3-4%. At lower rates, buying a point to save $40/month has a very long break-even; the math rarely pencils out. At 7.25%, the savings from a 0.5% rate reduction are $118/month — meaningful enough that the break-even becomes a realistic planning question rather than a theoretical exercise.
The Three-Scenario Comparison on a $350,000 Loan
No Points, One Point, and Two Points Side by Side
Using a 30-year fixed mortgage at $350,000 with three rate options:
Scenario A: 7.25% rate, no points paid
Monthly payment (principal & interest): $2,389/month
Total interest over 30 years: $510,040
Upfront points cost: $0
Scenario B: 7.0% rate, 1 point paid ($3,500 upfront)
Monthly payment: $2,329/month
Monthly savings vs Scenario A: $60/month
Total interest over 30 years: $488,440
Total interest savings vs A: $21,600
Break-even on $3,500 upfront cost: $3,500 ÷ $60 = 58 months (4.8 years)
Scenario C: 6.75% rate, 2 points paid ($7,000 upfront)
Monthly payment: $2,271/month
Monthly savings vs Scenario A: $118/month
Total interest over 30 years: $467,560
Total interest savings vs A: $42,480
Net savings after points cost: $42,480 – $7,000 = $35,480 over 30 years
Break-even on $7,000 upfront cost: $7,000 ÷ $118 = 59 months (4.9 years)
Notice that the break-even is almost identical whether you buy 1 point or 2 points — approximately 5 years in both cases. This is because the monthly savings scale proportionally with the rate reduction, and the cost scales proportionally with the points. The decision simplifies to a single question: will you be in this home (and this mortgage) for more than 5 years?
The Refinancing Wildcard
The Most Important Factor That Most Break-Even Calculators Ignore
A standard break-even calculation assumes you keep the same mortgage until break-even. But the second you refinance, the clock resets. Every dollar of discount points you paid at origination is gone — there's no credit, no refund, no carryover to the new loan.
This matters enormously in the current rate environment. Many buyers who purchased at 7.0-7.5% in 2023-2024 are planning to refinance when rates drop, citing the common advice to "marry the house, date the rate." If that refinance happens in year 2 or 3, buying points at origination was a pure loss:
Scenario C with a year-2 refinance:
Months with the discounted rate: 24
Savings accumulated: 24 × $118 = $2,832
Points paid: $7,000
Net loss: -$4,168
The break-even math assumes you keep the mortgage for 59 months. A refinance at month 24 means you only recouped $2,832 of a $7,000 investment. If you genuinely believe you'll refinance within 3-4 years when rates fall, buying discount points is not a good financial decision — it's effectively betting that rates will stay elevated.
The exception: if you buy a point in exchange for a rate that remains competitive even after a refinance environment develops. If your bought-down rate is already below what the refinance market will offer for the next 2-3 years, you're in good shape. But this requires a rate-direction bet that nobody reliably wins.
The Opportunity Cost You're Not Accounting For
What $7,000 Invested in the Market Would Do Instead
Discount points are a guaranteed return. If you buy points and stay in the home past break-even, you earn exactly $118/month — no variance, no risk. The question is how that compares to the alternative use of $7,000.
$7,000 invested in a broad market index fund (historically ~9-10% annualized long-term):
After 5 years: approximately $11,000-$11,500
After 10 years: approximately $18,100-$18,700
After 30 years: approximately $122,000 (at 10% annualized)
The total points savings over 30 years is $35,480 (net of the $7,000 cost). The $7,000 invested in the market at 10% annualized over 30 years grows to $122,000. From a pure wealth-building standpoint, investing the $7,000 rather than buying points beats the mortgage discount — but only if you actually invest it, and only if market returns hold to historical averages.
The practical reality: most homebuyers aren't choosing between buying discount points and investing in index funds. They're choosing between paying for points at closing and having that $7,000 available for moving costs, furniture, an emergency fund, or reducing how much they put on a credit card during the move. The opportunity cost comparison matters most for someone who genuinely has $7,000 sitting in a brokerage account and is deciding whether to liquidate it for points — in that scenario, the market return argument is real and favors investing over points in most long-run scenarios.
Permanent Discount Points vs Temporary Rate Buydowns
They Are Not the Same Thing — Know Which One You're Being Offered
During the 2022-2023 housing market slowdown, a different product became common: the temporary rate buydown, usually structured as a "2-1 buydown." A builder or seller pays a lump sum at closing to temporarily reduce your rate:
Year 1: rate is 2% below the note rate (if your rate is 7.25%, you pay 5.25%)
Year 2: rate is 1% below the note rate (you pay 6.25%)
Year 3 and beyond: full 7.25% rate kicks in
A 2-1 buydown is a seller concession — the seller is buying down your first two years of payments to help you afford the purchase. You are still locked in at 7.25% for the remaining 28 years. This is completely different from permanent discount points, which lower your rate for the entire loan term.
The confusion happens because both involve paying money at closing related to the interest rate. The test: ask your lender whether the rate reduction is permanent (the number on your loan documents never changes) or temporary (there's a buydown fund that pays the difference for the first 2 years). Permanent discount points change your note rate. A temporary buydown does not — your note rate is still 7.25%, and your payment in year 3 reflects that.
Neither product is inherently bad. A seller-paid 2-1 buydown can be genuinely valuable if you expect your income to increase over 2 years and can handle the higher year-3 payment. Permanent discount points can be valuable if you're buying a forever home and have the cash. Just know which one you're getting.
When Buying Points Actually Makes Sense
The Profile of a Buyer Who Should Pay Points
The break-even math points to a clear profile:
Pay points if:
You're buying a forever home or planning to stay 10+ years. You have excess cash after the down payment, closing costs, and a funded emergency fund — meaning the points cost doesn't come from an account you need. You believe interest rates will stay elevated and you won't refinance in the next 5 years. You value the certainty of a guaranteed monthly savings over the variable return of investing the same cash.
Don't pay points if:
You plan to sell, move, or refinance within 5 years. You're stretching to make the down payment and closing costs. You believe rates will drop significantly within 2-3 years and you'll refinance. You're a first-time buyer with limited liquidity after closing — that $7,000 belongs in an emergency fund first. You're comparing a 30-year fixed vs 15-year fixed and have other mortgage structure decisions still open. For that particular decision, our analysis of whether a 15-year or 30-year mortgage makes more financial sense covers the rate difference and total interest comparison that interacts with any points decision — the math changes if you're on a 15-year loan where break-even is roughly the same but total savings are compressed into a shorter timeline. Your credit score also determines your base rate before any points negotiation: a 680 score borrowing at 7.75% faces a very different points math than a 760 score borrowing at 7.0% on the same loan — our breakdown of what a credit score difference actually costs over a 30-year mortgage quantifies exactly how much a higher score saves before you even consider buying the rate down further. And the cash management at closing — how much you need for down payment, closing costs, PMI, and first-year reserves — is covered in our explanation of what PMI costs on a $350,000 home and when you can cancel it, which affects how much cash you have available to allocate toward points vs reserves.
For a structured guide to the full mortgage decision framework — not just points, but rate shopping, lender comparison, and loan types — the Nolo First-Time Homebuyer guide covers discount points, temporary buydowns, rate lock timing, and the full closing cost landscape in plain language that most mortgage brokers won't explain unbidden. And a mortgage payoff strategy guide covers the next decision after the rate is locked: whether prepaying principal over time further reduces total interest cost, and how to calculate the return on extra mortgage payments vs other uses of the same dollars — the same break-even framework used for discount points applies to prepayment decisions throughout the loan's life.