Mortgage Points Explained: When Buying Points Saves You Money

When shopping for a mortgage, you will encounter the option to "buy points" to lower your interest rate. This is one of the most misunderstood parts of the mortgage process — and when used strategically, one of the most powerful money-saving tools available to homebuyers.

There are two types of mortgage points, and they are very different: discount points (which you want) and origination points (which are a lender fee). This guide focuses primarily on discount points.

How Discount Points Work

A discount point is essentially prepaid interest. You pay money upfront at closing in exchange for a lower interest rate over the life of the loan. The standard exchange rate is:

1 point = 1% of loan amount = approximately 0.25% rate reduction

On a $350,000 mortgage at 6.5%, buying one point ($3,500) might reduce your rate to 6.25%. That 0.25% reduction drops your monthly principal and interest payment from $2,212 to $2,155 — a savings of $57/month.

Break-Even Analysis: The Only Math That Matters

The decision to buy points boils down to one question: how long will you keep the mortgage?

Break-even = Point cost ÷ Monthly savings. In our example: $3,500 ÷ $57 = 61 months (about 5 years). After 61 months, every dollar saved is pure profit. Over the full 30-year term, that one point saves $17,020 in total interest.

• Keeping the home 5–7 years: One point may be worth it
• Keeping the home 10+ years: Buying 1–2 points is usually a strong move
• Planning to move within 3–4 years: Skip points — you will not recoup the cost
• Might refinance soon: Skip points — refinancing resets the rate regardless

Discount Points vs Origination Points

Discount points lower your rate — they are optional and benefit you. Origination points are a lender fee for processing the loan — they do not reduce your rate and are negotiable. Always ask your lender to clearly separate these on the loan estimate.

Some lenders advertise low rates that assume you are buying 1–2 discount points. Always compare rates at the same point level (ideally zero points) to get an apples-to-apples comparison between lenders.

Tax Deductibility of Points

Mortgage discount points on a primary residence purchase are fully tax-deductible in the year of purchase. On a refinance, points must be deducted over the life of the loan (e.g., $3,500 in points on a 30-year refinance = $116.67/year deduction). This tax benefit effectively reduces the net cost of points by your marginal tax rate.

In 2026, if you are in the 24% tax bracket, a $3,500 point effectively costs $2,660 after the tax deduction — improving your break-even from 61 months to about 47 months.

Negative Points: Getting Paid by the Lender

You can also choose negative points (lender credits), where the lender gives you money at closing in exchange for a higher interest rate. This is useful if you are cash-strapped at closing or plan to sell/refinance within a few years.

For example, taking -1 point on a $350,000 loan means the lender gives you $3,500 toward closing costs, but your rate increases by about 0.25%. If you plan to keep the loan less than 5 years, negative points may actually save you money compared to a lower rate with upfront costs.