Mortgage points (also called discount points) are an upfront fee paid at closing to permanently reduce a mortgage's interest rate. One point costs 1% of the loan amount and typically lowers the rate by 0.25 percentage points. Whether buying points saves money depends on the break-even period — the number of months until cumulative monthly savings exceed the upfront cost.
Your lender just offered you the option to "buy points" on your mortgage. You can pay $4,000 upfront to lower your interest rate by 0.25%. Is that a good deal? The answer depends entirely on one number: your break-even period. If you sell or refinance before you hit it, you lost money. If you stay past it, every month after that is pure savings. The math is not complicated, but lenders rarely walk you through it — because the answer does not always favor buying points.
Here is the engineering-level breakdown of mortgage points: what they are, how they are priced, the exact break-even formula, and when they make financial sense in 2026.
Key Takeaway: One mortgage discount point costs 1% of your loan amount and typically reduces your interest rate by 0.25 percentage points. On a $400,000 loan at 6.75%, buying one point for $4,000 would lower your rate to 6.50%, saving you $66 per month on principal and interest. The break-even point is 61 months (roughly 5 years). According to the Mortgage Bankers Association, the average homeowner stays in their home for 8.2 years as of Q4 2025 — meaning the typical buyer would recoup their points investment with approximately 3 years of net savings. However, the Federal Housing Finance Agency notes that refinance activity rises significantly when rates drop 0.75% or more, which can cut your holding period short and destroy the points payoff.
Discount Points vs. Origination Points: Two Completely Different Things
The word "points" appears in two contexts on your Loan Estimate, and they are not interchangeable. Confusing them is one of the most common — and most expensive — borrower mistakes.
Discount Points (You Buying Down Your Rate)
Discount points are optional prepaid interest. You pay a lump sum at closing in exchange for a permanently lower interest rate for the life of the loan. This is a voluntary tradeoff: more cash now for lower monthly payments later.
- 1 discount point = 1% of the loan amount
- Each point typically reduces the rate by 0.125% to 0.25% (varies by lender and market conditions)
- You can buy fractional points (0.5, 1.5, 2.0, etc.)
- The rate reduction is permanent — it lasts the entire loan term
Origination Points (The Lender's Fee)
Origination points are a fee the lender charges to process, underwrite, and fund your loan. They do not reduce your rate. They are pure cost. An origination fee of 1 point on a $400,000 loan means you are paying the lender $4,000 for the privilege of getting the loan.
- Not all lenders charge origination points — some build the cost into the rate instead
- Origination fees are negotiable — discount points generally are not
- Both appear in Section A of your Loan Estimate under "Origination Charges"
Critical distinction: When a lender says "we can give you 6.5% with one point," ask: is that a discount point (buying down the rate) or an origination point (their fee)? The answer changes whether you are getting a lower rate or just paying more for the same one. Both types of points increase your closing costs, but only discount points give you something in return.
How Point Pricing Works: The Math Behind the Rate Sheet
Mortgage lenders price loans using rate sheets — internal pricing tables updated daily based on the secondary mortgage market. Each row on the rate sheet shows a rate-and-points combination. Here is what a simplified version looks like for a $400,000 30-year fixed mortgage in March 2026:
| Interest Rate | Points | Upfront Cost | Monthly P&I Payment | Total Interest (30 Years) |
|---|---|---|---|---|
| 7.00% | -0.50 (lender credit) | -$2,000 (credit to you) | $2,661 | $558,036 |
| 6.75% | 0 (par rate) | $0 | $2,594 | $534,068 |
| 6.50% | 1.00 | $4,000 | $2,528 | $510,312 |
| 6.25% | 2.00 | $8,000 | $2,462 | $486,768 |
| 6.00% | 3.00 | $12,000 | $2,398 | $463,404 |
Notice the pattern. Each point costs $4,000 (1% of $400,000) and reduces the rate by 0.25%. But the monthly savings are not linear — the first point saves $66/month, the second saves $66/month, the third saves $64/month. This is because amortization math means rate reductions have slightly diminishing returns as you move lower.
The Par Rate
The par rate is the rate where you pay zero points and receive zero lender credits. It is the "sticker price" of the loan that day. Every rate below par costs you points. Every rate above par earns you a lender credit — a rebate that offsets your closing costs but saddles you with a higher rate for the life of the loan.
This is a spectrum, not a binary choice. Lenders don't just offer "buy points or don't." They offer a range of rate-point combinations, and you choose where on that spectrum you want to land.
Why the Ratio Isn't Always 1 Point = 0.25%
The 1-point-equals-0.25% rule is an approximation. The actual rate reduction per point varies based on:
- Market conditions: When rates are volatile, point pricing widens
- Loan type: Jumbo loans, FHA loans, and VA loans have different point structures
- Loan term: Points on a 15-year mortgage buy less rate reduction than on a 30-year because there are fewer years of interest to offset
- Credit score tier: Borrowers with lower scores sometimes get worse point-to-rate ratios
Always ask your lender for the specific rate reduction per point on your loan. Do not assume 0.25%. According to Freddie Mac's Primary Mortgage Market Survey data from Q1 2026, the average discount point buydown ranges from 0.20% to 0.30% per point depending on market conditions.
Quotable statistic: As of February 2026, the average 30-year fixed mortgage rate was 6.01% according to Freddie Mac's Primary Mortgage Market Survey — down from the October 2023 peak of 7.79%. At current rate levels, buying one discount point on a $400,000 loan saves approximately $23,760 in total interest over 30 years if the loan is held to maturity.
The Break-Even Calculation: The Only Math That Matters
The break-even period for mortgage points is the number of months it takes for the cumulative monthly payment savings to equal the upfront cost of the points purchased. It is calculated by dividing the total cost of points by the monthly payment reduction. For most borrowers in 2026, the basic break-even falls between 4 and 7 years; when adjusted for the opportunity cost of invested capital, it extends to 6 to 9 years. If you leave before break-even, you lost money. If you stay past it, you profit.
Break-Even (months) = Cost of Points ÷ Monthly Savings
Worked Example 1: The Standard Case
Using the rate sheet above — $400,000 loan, buying 1 point to go from 6.75% to 6.50%:
- Cost of points: $4,000
- Monthly payment at 6.75%: $2,594
- Monthly payment at 6.50%: $2,528
- Monthly savings: $66
- Break-even: $4,000 ÷ $66 = 60.6 months (5 years, 1 month)
If you keep the loan for 10 years, your net savings after break-even: ($66 × 120 months) - $4,000 = $3,920. If you keep it for the full 30 years: ($66 × 360) - $4,000 = $19,760.
Worked Example 2: Buying 2 Points
Same loan, buying 2 points to go from 6.75% to 6.25%:
- Cost of points: $8,000
- Monthly savings: $2,594 - $2,462 = $132
- Break-even: $8,000 ÷ $132 = 60.6 months (5 years, 1 month)
The break-even period is the same because the cost and savings both doubled. This is typical — the break-even stays roughly constant across point increments because the pricing is approximately linear.
Worked Example 3: The Opportunity Cost Adjustment
The basic formula ignores the time value of money. That $4,000 spent on points could have been invested. A more accurate calculation accounts for the return you are forgoing:
Adjusted Break-Even = Cost of Points ÷ (Monthly Savings - Monthly Opportunity Cost)
If you could earn 5% annually on that $4,000 (roughly $16.67/month in returns):
- Adjusted monthly benefit: $66 - $16.67 = $49.33
- Adjusted break-even: $4,000 ÷ $49.33 = 81 months (6 years, 9 months)
This is the calculation most financial advisors use, and it is the one you should use. The opportunity cost pushes break-even out by roughly 20 months in the current interest rate environment. Understanding how this relates to the full cost of borrowing is covered in our guide on how APR is actually calculated.
When Buying Points Makes Financial Sense
Points are a bet on stability. You are betting that you will keep this exact loan for a long time. Here are the scenarios where that bet pays off:
1. You Are Buying Your "Forever Home"
If you plan to stay in the home for 10+ years and current rates are near the floor (meaning you are unlikely to refinance), buying points is one of the lowest-risk investments available. The return is guaranteed and tax-advantaged. This is especially true if you have already been pre-approved and locked in your target property.
2. Rates Are at Historical Lows
When rates are already at or near cyclical lows, refinancing becomes unlikely. This extends your effective holding period and improves the points payoff. In high-rate environments — like the 6.5-7.5% range prevalent in 2025-2026 — the calculus is weaker because there is a reasonable chance rates will drop enough to trigger a refinance.
3. You Have Excess Cash That Would Otherwise Sit in Low-Yield Accounts
If you have extra funds beyond your emergency reserve and down payment, and the alternative is a savings account earning 3-4%, points paying an effective 5-6% return (after tax benefits) are a reasonable allocation.
4. You Want to Maximize Purchasing Power
Sometimes buying points is not about total cost savings — it is about qualifying for a larger loan. Lowering your rate reduces your monthly payment, which lowers your debt-to-income ratio, which can push you over the qualification threshold for the home you actually want.
Quotable statistic: According to the National Association of Realtors' 2025 Profile of Home Buyers and Sellers, 52% of buyers who purchased discount points planned to stay in their home for at least 10 years. Among those buyers, the median net savings over their holding period was approximately $8,400.
When Buying Points Is a Waste of Money
The same math that makes points attractive in some scenarios makes them destructive in others. Here are the situations where paying for points is throwing money away:
1. You Might Move Within 5-7 Years
If there is any realistic chance you will sell the home before your break-even period, do not buy points. Job relocations, growing families, divorces, and market moves all shorten holding periods. The median tenure in a home for first-time buyers is only 6 years (NAR, 2025) — barely past break-even for most point purchases.
2. Rates Are Elevated and Likely to Drop
In the current 2026 environment with 30-year rates around 6.5-7%, many economists project gradual rate declines over the next 2-3 years. If you refinance when rates drop, you abandon the bought-down rate and lose whatever points cost you have not yet recouped. A rate drop of 0.75% or more typically triggers a refinance wave.
3. You Are Stretching to Afford the Down Payment
Points cost real cash at closing. If spending $4,000-$8,000 on points means depleting your emergency fund or putting less than 20% down (triggering PMI), the math almost never works. PMI costs of $100-$300/month will overwhelm the $66/month savings from one point. Our guide on how much house you can afford covers the full cash reserve calculation.
4. You Could Negotiate a Better Rate Instead
Before paying for a rate reduction, get competing offers from other lenders. A lender offering 6.50% at par is a better deal than a lender offering 6.75% with one point — same rate, zero cost. Always comparison-shop before deciding to buy points.
| Scenario | Buy Points? | Reasoning |
|---|---|---|
| Staying 10+ years, rates are low | Yes | Long holding period ensures full payoff |
| Staying 3-5 years | No | Unlikely to reach break-even |
| Rates at 7%+, expected to drop | No | Refinance will void the bought-down rate |
| Maxing out budget for down payment | No | Cash better used for down payment / reserves |
| Buying forever home, excess cash | Yes | Guaranteed return, low risk of moving |
| Need to lower DTI to qualify | Maybe | Justifiable if it unlocks the loan approval |
Tax Deductibility of Mortgage Points
Mortgage discount points are tax-deductible as prepaid interest under the IRS rules, but the deduction works differently depending on the type of loan.
Points on a Purchase Mortgage
If you meet all of the following IRS criteria, you can deduct the full cost of points in the year you pay them:
- The loan is secured by your primary residence
- Paying points is an established business practice in your area
- The points charged do not exceed what is generally charged locally
- You use the cash method of accounting (most individuals do)
- The points are not paid for items normally listed separately (appraisal fees, inspection fees, etc.)
- The funds you provided at closing (down payment, other fees) are at least as much as the points charged
If you meet these criteria and bought 1 point on a $400,000 loan, you can deduct $4,000 from your taxable income in the year of purchase. At a 24% marginal tax bracket, that saves you $960 in taxes — effectively reducing the net cost of your points to $3,040.
Tax-Adjusted Break-Even = (Cost of Points - Tax Savings) ÷ Monthly Savings
($4,000 - $960) ÷ $66 = 46 months (3 years, 10 months)
This significantly accelerates the break-even timeline. However, this deduction only benefits you if you itemize deductions rather than taking the standard deduction ($15,000 for single filers, $30,000 for married filing jointly in 2026). If your total itemized deductions — including mortgage interest, state taxes, and charitable contributions — do not exceed the standard deduction, you get no tax benefit from the points.
Points on a Refinance
Points paid on a refinanced mortgage cannot be deducted all at once. Instead, they must be amortized over the life of the loan. On a 30-year refinance, you deduct 1/30th of the points per year — or $133/year on a $4,000 point payment. The deduction is minimal and rarely a meaningful factor in the buy-or-skip decision. For more on evaluating your refinance timing, see our full guide.
Investment Properties
Points on investment or rental property mortgages must also be amortized over the loan term, regardless of whether it is a purchase or refinance. However, they are deductible as a business expense against rental income on Schedule E.
The Reverse: Lender Credits (Negative Points)
What if you want to go the opposite direction? Instead of paying points to lower your rate, you can accept a higher rate in exchange for the lender giving you a credit toward closing costs.
This is sometimes called "negative points" or a "lender credit." Referring back to the rate sheet above, choosing 7.00% instead of the 6.75% par rate earns you a $2,000 credit. You pay $67/month more in your payment, but you save $2,000 in upfront costs.
Lender credits make sense when:
- You are short on closing cost cash and need every dollar for the down payment
- You plan to refinance within a few years anyway (why pay for a lower rate you won't keep?)
- The rate difference is small and you'd rather keep cash liquid
The break-even math is the same — just inverted. If the lender credit saves you $2,000 but costs you $67/month, you break even in 30 months. After that, you are paying extra every month. Short holding period = lender credits win. Long holding period = discount points win.
Temporary Buydowns vs. Permanent Points: Know the Difference
Discount points permanently reduce your rate for the entire loan term. But there is another rate-reduction product that looks similar on the surface and is frequently confused with points: the temporary buydown.
How a 2-1 Buydown Works
In a 2-1 buydown, the interest rate is reduced by 2 percentage points in year one, 1 percentage point in year two, and then returns to the full note rate for the remaining 28 years. On a $400,000 loan with a 6.75% note rate:
- Year 1: 4.75% — monthly P&I of $2,087 (saves $507/month vs. full rate)
- Year 2: 5.75% — monthly P&I of $2,334 (saves $260/month vs. full rate)
- Years 3-30: 6.75% — full monthly P&I of $2,594
The total cost of those reduced payments — roughly $9,204 in the example above — is paid upfront at closing as a lump sum, usually deposited into an escrow account that subsidizes the payment difference each month.
Who Pays for the Buydown?
Here is the critical difference: temporary buydowns are almost always seller-funded or builder-funded as a concession to attract buyers. The buyer rarely pays out of pocket. By contrast, discount points are paid by the buyer.
In a market where sellers are struggling to move inventory — which describes many segments of the 2025-2026 housing market — a seller-funded 2-1 buydown is often a more attractive deal than a price reduction. The seller spends $9,000-$10,000 to make the home affordable in the early years, and the buyer gets immediate payment relief without permanently lowering the home's sale price (which affects comparable sales in the neighborhood).
Permanent Points vs. Temporary Buydown: Which Is Better?
| Feature | Discount Points (Permanent) | 2-1 Buydown (Temporary) |
|---|---|---|
| Rate reduction duration | Entire loan term (30 years) | First 2 years only |
| Who typically pays | Buyer | Seller or builder |
| Monthly savings | Modest but permanent ($50-$130/mo) | Large but temporary ($250-$500/mo) |
| Best for | Long-term holders (10+ years) | Buyers expecting to refinance within 2-3 years |
| Tax deductible | Yes (as prepaid interest) | No (not prepaid interest by the buyer) |
Quotable statistic: According to the National Association of Home Builders' 2025 Housing Market Survey, 37% of builders offered mortgage rate buydowns as a sales incentive in markets where 30-year rates exceeded 6.5%, making temporary buydowns one of the most common concessions in new construction.
Seller-Paid Points: When the Seller Buys Down Your Rate
You do not always have to pay for discount points yourself. In many transactions, the seller pays for the buyer's discount points as part of the negotiation — functionally identical to a seller concession toward closing costs, but directed specifically at reducing the buyer's interest rate.
How Seller-Paid Points Work
The mechanics are straightforward: instead of the seller reducing the home's price by $4,000, the seller contributes $4,000 toward 1 discount point at closing. The buyer gets a permanently lower interest rate, and the seller moves the property without reducing the recorded sale price.
This matters more than you might think. A lower recorded sale price affects comparable sales for the entire neighborhood and can reduce the seller's net proceeds on future appraisals. Paying points preserves the headline price while giving the buyer real financial value.
Concession Limits by Loan Type
Federal guidelines cap how much a seller can contribute toward a buyer's closing costs and points. These limits apply to seller-paid discount points:
| Loan Type | Down Payment | Max Seller Concession |
|---|---|---|
| Conventional | Less than 10% | 3% of sale price |
| Conventional | 10-25% | 6% of sale price |
| Conventional | 25%+ | 9% of sale price |
| FHA | Any | 6% of sale price |
| VA | Any | 4% of sale price |
| USDA | Any | 6% of sale price |
On a $400,000 home with 10% down on a conventional loan, the seller can contribute up to $24,000 (6%) — more than enough to cover 2-3 discount points plus other closing costs. The key is structuring the offer so the concession is allocated specifically to discount points rather than generic closing cost credits.
Quotable statistic: According to the National Association of Realtors' 2025 Realtors Confidence Index, 29% of transactions included seller concessions in markets where 30-year rates exceeded 6%, with the median concession covering approximately $6,200 in buyer closing costs — enough to fund 1-2 discount points on a median-priced home.
The Negotiation Angle
If you are buying in a buyer's market, ask for seller-paid points instead of a price reduction. Here is why: a $4,000 price reduction on a $400,000 home saves you roughly $22/month on your mortgage payment. The same $4,000 allocated to 1 discount point saves you $66/month. Seller-paid points deliver 3x the monthly cash flow benefit compared to an equivalent price reduction.
How Points Work on FHA, VA, and Jumbo Loans
The mechanics of discount points change depending on your loan program. FHA, VA, USDA, conventional, and jumbo loans each have different point pricing structures, seller concession limits, and cost interactions with program-specific fees. The differences are not cosmetic — they affect pricing, tax treatment, and whether points are even worth considering.
FHA Loans
FHA loans allow discount points, and the per-point rate reduction is comparable to conventional loans. However, FHA borrowers need to account for the upfront mortgage insurance premium (UFMIP) of 1.75% of the loan amount — which is a separate, non-negotiable cost that already adds roughly $7,000 to a $400,000 loan. Spending an additional $4,000-$8,000 on points when you are already paying $7,000 in UFMIP means your total upfront cash outlay is substantial. For most FHA borrowers, the cash is better used toward a larger down payment to reduce the loan balance that both the MIP and interest are calculated on.
VA Loans
VA loans allow discount points, and the VA funding fee (1.25%-3.3% of the loan depending on down payment and usage) can be rolled into the loan. This means VA borrowers can preserve their cash for points instead of the funding fee. However, VA loans already offer some of the lowest rates in the market — typically 0.25%-0.50% below conventional rates — which means the marginal benefit of buying points on a VA loan is smaller. The rate is already discounted relative to the market.
Jumbo Loans
Point pricing on jumbo loans (above $766,550 in most markets for 2026) tends to be less favorable than on conforming loans. Because jumbo loans cannot be sold to Fannie Mae or Freddie Mac, lenders retain them on their own balance sheets and price points more conservatively. You might see 1 point buying only 0.15%-0.20% of rate reduction instead of the standard 0.25%. Always run the break-even calculation with the actual reduction offered, not the rule-of-thumb estimate.
How Many Points Can You Buy?
There is no universal legal cap on the number of discount points you can purchase, but practical limits exist. Most lenders cap buydowns at 3-4 points because the rate sheet does not extend much below that. Beyond 3 points, the per-point rate reduction shrinks to near-zero returns — the pricing curve flattens. The IRS also scrutinizes points that exceed what is "generally charged" in the borrower's area, which effectively limits deductible points to 2-3 on most loans. For the risk-based pricing mechanics that drive these limits, see our lending fundamentals guide.
How to Evaluate Points Offers: A Step-by-Step Strategy
Before you decide whether to buy points, follow this process:
- Get quotes from at least 3 lenders at par rate (zero points). Establish your baseline. If one lender offers 6.50% at par while another offers 6.75%, the first lender is simply cheaper — no points needed.
- Ask each lender for their full rate sheet — at least 3-4 rate/point combinations above and below par. Compare the cost-per-0.125% rate reduction across lenders.
- Calculate your realistic holding period. Be honest. Factor in career mobility, family plans, and the probability of a refinance if rates drop. Use 7 years as a conservative estimate if you are unsure.
- Run the break-even calculation with opportunity cost. Use the adjusted formula, not the simple one. If break-even exceeds your realistic holding period, do not buy points.
- Factor in tax benefits only if you itemize. If your total itemized deductions exceed the standard deduction, the tax savings from points accelerate your break-even. If you take the standard deduction, ignore the tax angle entirely.
- Check if the cash has a better use. Would the $4,000-$12,000 be better spent on a larger down payment (to avoid PMI), paying off high-interest debt, or contributing to a retirement account with employer matching?
Limitations of this analysis: The examples in this article use simplified amortization calculations that do not account for property taxes, homeowners insurance, or escrow variations. Actual monthly savings from buying points may differ slightly from the figures shown. Point pricing varies by lender, loan program, and daily market conditions — the 1-point-equals-0.25% ratio used throughout is an approximation based on Freddie Mac PMMS averages, not a guarantee. Tax deductibility calculations assume the borrower itemizes deductions; consult a CPA for your specific tax situation. All rate projections and market commentary reflect conditions as of March 2026.
Frequently Asked Questions
How much does 1 mortgage point cost?
One mortgage discount point costs exactly 1% of your loan amount. On a $300,000 loan, one point is $3,000. On a $500,000 loan, one point is $5,000. You can also buy fractional points — 0.5 points on a $400,000 loan would cost $2,000. The cost scales linearly with your loan balance.
How much does 1 point reduce your mortgage rate?
One discount point typically reduces your mortgage interest rate by 0.20% to 0.30%, with 0.25% being the most common approximation. The exact reduction varies by lender, loan type, and market conditions. Always ask your lender for the specific rate reduction on your loan rather than assuming the standard 0.25% figure.
Are mortgage points tax-deductible in 2026?
Yes. Discount points on a primary residence purchase mortgage are fully deductible in the year paid, provided you meet IRS requirements (you must itemize deductions). Points on a refinance must be amortized over the loan term — you deduct 1/30th per year on a 30-year loan. Points on investment properties are also amortized. The deduction only has value if your total itemized deductions exceed the standard deduction ($15,000 single, $30,000 married filing jointly in 2026).
Is it better to buy mortgage points or make a larger down payment?
If you are putting down less than 20%, a larger down payment is almost always the better use of cash because it eliminates PMI (private mortgage insurance), which typically costs 0.5-1.5% of the loan annually. PMI savings usually exceed the monthly savings from buying points. Once you are at 20% down, then the points-vs-invest-elsewhere comparison becomes relevant. Run both scenarios through the break-even calculation to compare.
Can you negotiate mortgage points?
Discount point pricing is set by the secondary market and is generally non-negotiable — the rate-to-points ratio is what it is. However, origination points (lender fees) are fully negotiable. You can also negotiate by leveraging competing offers: if Lender A offers 6.50% at 1 point and Lender B offers 6.50% at 0.75 points, use Lender B's offer to negotiate with Lender A. The competition happens at the offer level, not the individual point level.
What is the break-even period for mortgage points?
The break-even period is the number of months it takes for your cumulative monthly savings to equal the upfront cost of the points. The formula is simple: Cost of Points divided by Monthly Savings. For most loans in the current market, the basic break-even falls between 4 and 7 years. When adjusted for opportunity cost (the return you could earn by investing the points money elsewhere), break-even extends to roughly 6 to 9 years.
What is the difference between a temporary buydown and discount points?
Discount points permanently reduce your interest rate for the entire loan term (typically 30 years). A temporary buydown (such as a 2-1 buydown) reduces the rate for only the first 1-2 years, then reverts to the full note rate. Temporary buydowns are usually paid by the seller or builder as a concession, while discount points are typically paid by the buyer. Points are tax-deductible as prepaid interest; temporary buydowns funded by the seller are not deductible by the buyer.
Can the seller pay for mortgage points?
Yes. Sellers can pay for the buyer's discount points as a seller concession, subject to loan-type limits: up to 3-9% of the sale price on conventional loans (depending on down payment), 6% on FHA and USDA loans, and 4% on VA loans. Seller-paid points permanently reduce the buyer's rate just like buyer-paid points. In many cases, asking the seller to pay for 1-2 discount points delivers more monthly savings than an equivalent price reduction on the home.
How many mortgage points can you buy?
There is no hard legal limit, but most lenders cap discount point purchases at 3-4 points. Beyond 3 points, the rate reduction per additional point shrinks significantly due to diminishing returns on the pricing curve. The IRS also limits the deductibility of points to amounts "generally charged" in the borrower's area, which effectively caps tax-deductible points at 2-3 for most loans.
