What are mortgage discount points?

Mortgage discount points are upfront fees paid directly to the lender at closing in exchange for a permanently lower interest rate. One discount point costs 1% of your total loan amount (e.g. $4,000 on a $400,000 mortgage) and typically lowers your interest rate by 0.25% (25 basis points).

How do you calculate the breakeven point on mortgage points?

The breakeven point is calculated by dividing the upfront cash cost of the points by your monthly mortgage payment savings. For example, if 1 point costs $4,000 and reduces your monthly payment by $65/month, your breakeven period is $4,000 / $65 = 61.5 months (5.1 years).

Why is buying points risky in a high or volatile interest rate environment?

If you buy discount points with a 5-year breakeven period, but market mortgage rates drop in 2 or 3 years and you refinance, you lose the remaining unrecovered point fees. You should only buy points if you are confident you will keep that specific loan past the breakeven date.

Mortgage Buy-Down Engine Discount Points • Breakeven Months • Refi Risk • S&P 500 Compounding

Mortgage Discount Points Breakeven Calculator

Calculate whether paying 1 to 2 discount points upfront at closing actually saves money before you move or refinance.

1. Loan Parameters & Base Rate

Mortgage Specs

Mortgage Loan Amount ($):

Base Interest Rate (0 Points %):

Discount Points to Buy (e.g. 1.0):

Rate Drop Per Point (%):

How Long Will You Keep This Exact Loan? (Years):

2. Point Pricing & Rate Summary

At Closing

Upfront Cash Cost of Points: $4,500.00

New Bought-Down Interest Rate: 6.500% (-0.25%)

Discount Points Breakeven Point

59.8 Months (5.0 Years)

✅ FAVORABLE (STAY > 5 YRS)

Monthly Savings

$75.25/mo

Lower P&I Payment

Horizon Profit

+$1,821

Over 7 Years

S&P 500 Compounding

$7,950

If Cash Invested

Refi Risk Window

60 Months

Loss if Refi Early

Mortgage Points Decision Verdict:

Because you plan to keep this mortgage for 7.0 years, you will recover your $4,500 point fee in 59.8 months and generate +$1,821 in net interest savings. However, if interest rates drop and you refinance before Year 5, buying points will result in a net cash loss.

Cumulative Net Savings Over Time

Tracking the crossing point from negative upfront fee into pure profit

Breakeven Curve

✨ AI Mortgage Points & Refinance Strategist 100% Private to You

Click "Run AI Points Audit" to evaluate temporary seller-paid 2-1 buydowns (saving $400/mo in Year 1 without locking cash into permanent points) and IRS Schedule A tax deductibility.

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Mortgage Structuring & Rate Buy-Downs

The Mortgage Points Gamble: Why Buying Down Your Rate Can Backfire in a Falling Rate Environment

An engineering analysis of breakeven math, lender discount structures, and why temporary 2-1 buydowns often beat permanent points.

The 60-Month Breakeven Rule

Buying permanent discount points requires an average of 55 to 65 months (4.5 to 5.5 years) of uninterrupted monthly payments just to recoup the upfront cash spent at closing. If you sell the home, get relocated for work, or refinance into a lower market rate before Month 60, buying points was a guaranteed loss.

Frequently Asked Questions (Mortgage Discount Points)

Are mortgage discount points tax deductible?

Yes! For a primary home purchase, discount points are generally 100% tax-deductible in the year paid on IRS Schedule A if you itemize deductions. For a refinance, points must be amortized and deducted evenly over the life of the loan (e.g. 1/30th per year for a 30-year loan).

What is a temporary 2-1 buydown vs permanent points?

A temporary 2-1 buydown (often paid by the home seller or builder as a concession) reduces your interest rate by 2% in Year 1 and 1% in Year 2, before resetting to the fixed note rate in Year 3. Unlike permanent points, unused funds in a temporary buydown escrow account are credited back to your principal balance if you refinance early!