Mortgage Points: When Buying Down the Rate Actually Pays Off

Last reviewed: 2026-05-08 — ScoutMyTool Editorial

The CFPB's Loan Estimate explainer defines a discount point as "an upfront fee that you pay to your lender in exchange for a lower interest rate than you would have paid otherwise." Industry pricing convention is straightforward: 1 point equals 1% of the loan amount, and the typical buy-down is roughly 0.25% off the rate per point — though it can range from 0.125% to 0.375% depending on lender, loan type, and market. With Freddie Mac PMMS reporting a 30-year fixed average of 6.37% for the week ending May 7, 2026, a buyer offered 1 point on a $400,000 loan would pay $4,000 upfront to drop the rate from 6.37% to roughly 6.12%. The monthly P&I savings on that loan are about $66, which means a break-even of $4,000 ÷ $66 ≈ 61 months (just over 5 years). Stay in the loan past month 61 and the points pay off; sell or refinance sooner and they don't. This guide walks through the math, when to itemize the deduction, and how to test the trade in our mortgage calculator.

What a Mortgage Point Is

A "discount point" is an upfront fee paid to the lender to reduce the interest rate on a mortgage. Standard convention:

• 1 point = 1% of the loan amount (paid upfront)
• 1 point typically reduces the rate by 0.125% to 0.375% (varies by lender, market, loan type)
• Most common: ~0.25% rate reduction per point

So on a $400,000 loan:

• 1 point = $4,000 upfront fee
• Effect: rate drops by ~0.25% (e.g., from 6.50% to 6.25%)
• Multiple points can be purchased (2 points = 2% of loan = ~0.50% rate reduction)

Per the CFPB's Loan Estimate explainer, discount points must be disclosed on the standardized 3-page Loan Estimate document along with all other closing costs. Compare different lenders' point offers via the Loan Estimate's APR calculation.

The other type of "point" is "origination points" — these are the lender's compensation for processing the loan and don't reduce the rate. Don't confuse the two. Discount points reduce rate; origination points don't.

The Break-Even Formula

The decision math:

Break-even months = Cost of points / Monthly payment savings

For 1 point on a $400K 30-year fixed at 7.0% vs 6.75%:

• Cost of point: $4,000
• 30-year fixed at 7.0%: $2,661/month P&I
• 30-year fixed at 6.75%: $2,594/month P&I
• Monthly savings: $67
• Break-even: $4,000 / $67 = 60 months (5 years)

If you stay in the loan past 60 months, points were worth it. If you sell or refinance before, points lost money.

NAR home buyer profile data has historically shown median tenure in a single home around 13 years, and Freddie Mac research on mortgage tenure shows similar multi-year stays once households finish refinancing churn. So for a typical buyer who'll keep the same mortgage for 8–10+ years, 1 point with a 5-year break-even is favorable. For a buyer planning to refinance within 3 years (e.g., expecting rate drops), or one who'll move within 5 years (job-related relocation), points are a money-loser.

Tax Deductibility

Discount points on a primary-residence purchase mortgage are typically tax-deductible in the year paid, per IRS Publication 936. Specific requirements:

• The loan must be secured by the primary residence
• Points must be paid for the actual buy-down, not as origination fee
• The amount must be customary in the area
• Paid from the borrower's own funds (not from loan proceeds)

For refinance loans, points are generally NOT immediately deductible — they must be amortized over the life of the loan. So 1 point on a refinance gives a small annual deduction (1/30th if 30-year loan), not the full deduction in year 1.

The deduction is itemized; only worthwhile if your total itemized deductions exceed the standard deduction ($15K single / $30K MFJ in 2026 per IRS announcement).

How the Mortgage Calculator Works

The mortgage calculator takes loan amount, rate, and term, then outputs monthly P&I payment and total interest. To test points: run the calculator with the original rate, then with the buy-down rate, compare monthly payments, divide point cost by savings.

For broader mortgage analysis, pair with the refinance calculator, the home affordability calculator for purchase-price decisions, the loan calculator for non-mortgage payment math, and the savings goal calculator if you're planning the cash for points alongside down payment savings. Buyers who want to see the rate-vs-payment relationship from first principles should read how to calculate a mortgage payment by hand and mortgage calculator vs amortization schedule; buyers comparing the buy-vs-rent decision should see mortgage vs rent in 2026.

Worked Examples

Example 1 — 1 point on a $400K loan, 7-year stay. Cost: $4,000. Monthly savings: $67. Break-even: 60 months. After 7 years (84 months) net savings: 84 × $67 − $4,000 = $1,628. Points were worth it.

Example 2 — 1 point on a $400K loan, 4-year stay. Same numbers. After 4 years (48 months): 48 × $67 − $4,000 = -$784. Points lost money.

Example 3 — 2 points for 0.5% reduction. Same loan, $400K. Cost: $8,000. Rate drops 0.50% (e.g., 7.0% to 6.5%). Monthly savings: ~$132. Break-even: $8,000 / $132 = 60.6 months. Same break-even ratio. The total saving is bigger past break-even but the time-to-recoup is similar.

Example 4 — Tax-adjusted break-even. Same 1 point on $400K. If you itemize and are in the 24% bracket, the $4,000 point is tax-deductible — saves ~$960 in federal tax. Net cost: $3,040. Break-even: $3,040 / $67 = 45 months. The tax deduction shaves 15 months off the break-even.

Common Pitfalls

The biggest pitfall is paying points without computing the break-even. The "save money over the life of the loan" framing assumes you stay in the loan for the life — most borrowers don't. Always compute break-even months and compare to your expected ownership period.

The second is confusing discount points and origination points. Discount points reduce rate; origination points pay the lender for processing. Both appear on the closing disclosure. Read the descriptions to distinguish.

The third is paying points on a refinance without considering the amortization-of-deduction rule. Refi points must be amortized over the loan life — small annual deduction vs the full year-one deduction on purchase points.

The fourth is forgetting that current high rates may not last. If you expect rates to fall in 2–3 years and refinance, paying points now locks in a buy-down at a level that becomes irrelevant when you refi. The lower rates of refi-future make the points overpaid in retrospect.

The fifth is assuming all lenders' point pricing is similar. Some lenders offer steeper buy-downs per point (e.g., 0.375% per point instead of 0.25%). Per the CFPB Loan Estimate explainer, comparing multiple lenders' point pricing on the standardized form reveals significant variance — get 3–5 quotes before deciding.

Frequently Asked Questions

Q: How much does 1 mortgage point cost? A: 1 point = 1% of the loan amount, paid upfront at closing. On a $400K loan, 1 point costs $4,000.

Q: How much does 1 point reduce the interest rate? A: Typically about 0.25% (1/4 percentage point), though it varies between 0.125% and 0.375% by lender. The exact buy-down is shown on the Loan Estimate.

Q: Are mortgage points tax-deductible? A: Purchase mortgage points: generally yes in the year paid, per IRS Publication 936. Refinance points: must be amortized over loan life. Only deductible if you itemize (most filers don't since 2017 TCJA).

Q: Should I always buy points? A: No. Compute break-even months (point cost / monthly savings). Buy points only if you'll stay in the loan past break-even. For typical 5-year break-evens, ownership of 7+ years is the threshold for points to pay off.

Q: Can I roll points into the loan amount? A: Some lenders allow this, but it defeats the tax-deduction benefit (paid from loan proceeds, not own funds — generally not deductible). Pay points from cash for tax purposes; if cash-constrained, consider not buying points rather than rolling them in.

Q: What's the difference between discount points and lender credits? A: Discount points: pay upfront, get a lower rate. Lender credits: opposite direction — accept a higher rate, get a credit toward closing costs. Both options are typically available; pick based on your cash position and break-even analysis.

Q: How many points should I buy? A: Depends on break-even analysis. 1 point is the most common; 2 points doubles the cost and the savings (similar break-even ratio). Above 2 points has diminishing returns — lender markups become disproportionate. For typical residential loans, 0–1 points covers most reasonable scenarios.

Wrapping Up

Discount points buy down the mortgage rate at a typical cost of 1% of the loan per point for ~0.25% rate reduction. The decision math is simple: divide the point cost by the monthly savings to get break-even months. Stay in the loan past break-even and points pay off; sell or refi sooner and they don't. Use the mortgage calculator to test rate scenarios, the refinance calculator for refi-driven decisions, and the home affordability calculator for the broader purchase-decision context. The lender's "save over the life of the loan" pitch is technically true but irrelevant if you don't stay for the life of the loan.