Mortgage Points Explained: Should You Buy Down Your Rate?

When you receive a mortgage quote, you might see an option to buy points to lower your interest rate. Paying more upfront for a cheaper loan sounds appealing, but is it actually a good deal? The answer depends almost entirely on one number: your break-even point.

In this guide we explain what mortgage points are, exactly how they work with a real $300,000 example, when buying them makes sense, when they do not, and how lender credits work in the opposite direction. By the end, you will be able to run the same calculation on any quote you receive.

What Are Mortgage Points?

Mortgage points — also called discount points — are a form of prepaid interest. You pay a lump sum at closing in exchange for a lower interest rate on your loan. It is essentially a trade: more cash today, smaller payments tomorrow.

The pricing rules are refreshingly simple:

• One point costs 1% of your loan amount. On a $300,000 loan, one point costs $3,000. On a $500,000 loan, it costs $5,000.
• Each point typically lowers your rate by about 0.25%. The exact reduction varies by lender, loan type, and market conditions, so always ask your lender for their current points-to-rate sheet.
• You can usually buy fractions of a point, such as half a point, and many lenders allow up to two or three full points.

Note that discount points are different from origination fees. An origination fee compensates the lender for making the loan but does nothing to your rate. Discount points specifically buy down your rate — that is what we cover here.

How Do Mortgage Points Work?

The math behind points comes down to a single formula:

Break-even months = Cost of Points / Monthly Savings

Until you pass the break-even month, the points have cost you more than they saved. After that, every payment is pure savings for as long as you keep the loan. Let us walk through a complete example with real numbers.

Step 1: Your Payment Without Points

Suppose you borrow $300,000 over 30 years at 6.5%. Using the standard amortization formula M = P x [ r(1+r)ⁿ / ((1+r)ⁿ - 1) ]:

i = 6.5% / 12 = 0.005417

n = 30 x 12 = 360 months

M = $300,000 x [ 0.005417 x (1.005417)³⁶⁰ / ((1.005417)³⁶⁰ - 1) ]

Monthly P&I payment without points = $1,896

Step 2: Your Payment With One Point

You pay one point at closing: 1% x $300,000 = $3,000. In exchange, your lender drops the rate by 0.25%, from 6.5% to 6.25%. Recalculating:

i = 6.25% / 12 = 0.005208

M = $300,000 x [ 0.005208 x (1.005208)³⁶⁰ / ((1.005208)³⁶⁰ - 1) ]

Monthly P&I payment with one point = $1,847

Step 3: Find the Monthly Savings

$1,896 − $1,847 = $49 per month

Step 4: Calculate the Break-Even Point

$3,000 / $49 = 61 months, which is roughly 5 years.

If you keep this loan longer than five years, the point has paid for itself and everything after that is profit. If you sell or refinance sooner, you paid $3,000 for less than $3,000 of benefit.

When Buying Points Makes Sense

Points are a tool, not a trick. Used in the right situation, they can save you tens of thousands of dollars. Buying points generally makes sense when:

• You plan to stay in the home well past your break-even point. In our example, the break-even is about 61 months. If you expect to live in the house for 10, 15, or 30 years, every month beyond break-even puts money back in your pocket — roughly $17,662 over a full 30-year term.
• You have extra cash after your down payment and emergency fund. Points should only be bought with money that is truly surplus. A healthy emergency fund of three to six months of expenses comes first; a lower rate is never worth being one broken furnace away from credit card debt.
• You want a lower monthly payment for budget reasons. If your income is fixed or you simply value cash-flow breathing room more than liquidity, trading $3,000 at closing for $49 less per payment is a legitimate strategy. Some buyers also prefer the psychological comfort of a lower required payment.

A useful rule of thumb: if your planned time in the home is at least two years past break-even, points deserve serious consideration.

When Points Do NOT Make Sense

The same math that makes points attractive for long-term owners makes them a losing bet for everyone else. Skip the points when:

• You might move or refinance within five years. Job changes, growing families, and rate drops are all common reasons loans end early. Remember that paying off your loan does not just mean selling: refinancing also erases your points, because the new loan starts fresh at whatever rate the market offers.
• Buying points would deplete your emergency fund. Cash in hand protects you far more than a slightly lower rate. If spending $3,000 at closing leaves you with no cushion, keep the cash and skip the points — you can always make extra principal payments later instead.
• The break-even is longer than your realistic stay. On smaller loan balances the monthly savings shrink while the point cost stays proportional, so break-even stretches. If your lender quotes a break-even of eight years and you expect to move in six, the answer is simple: no.

One more subtle risk: home values. If you sell in a soft market sooner than planned, the unrecovered point cost compounds an already painful transaction.

Lender Credits: Negative Points

Points also work in reverse. With lender credits, the lender pays you (or directly offsets some of your closing costs) in exchange for accepting a higher interest rate. Think of them as negative points.

For example, instead of paying $3,000 to drop from 6.5% to 6.25%, you might accept 6.75% and receive roughly $3,000 toward closing costs. Your monthly payment rises, but the cash needed to close falls.

Lender credits are most useful when:

• Cash is tight and coming up with both a down payment and closing costs is a stretch.
• You expect to move or refinance soon, so a higher long-term rate costs you little.
• You would rather invest or keep the difference than lock extra money into housing costs.

The trade-off mirrors buying points: the higher rate means paying more interest every month for the life of the loan. Over decades, credits can easily cost more than the closing costs they offset — run the numbers before choosing them purely to shrink the cash-to-close figure.

Are Mortgage Points Tax Deductible?

For many borrowers there is one silver lining to handing over thousands of dollars at closing: points are generally tax deductible in the year they are paid, as long as the loan is used to buy or build your primary residence and you itemize deductions. That makes points one of the few mortgage costs you can potentially deduct immediately, unlike most closing costs.

The IRS attaches conditions: the points must be a normal practice in your area, computed as a percentage of the loan, paid directly for the home purchase, and clearly shown on your Closing Disclosure (and the lender's statement to the IRS). Points paid on a refinance usually must be deducted ratably over the life of the loan rather than all at once.

Tax law changes frequently and everyone's situation differs, so treat this section as general education — not advice. Confirm your specific deduction with a qualified tax professional before filing.

Real Example: Break-Even at Different Point Purchases

What happens if you buy two or even three points? Each additional point adds another $3,000 of cost and shaves roughly another 0.25% off the rate on our $300,000, 30-year loan:

Notice how the break-even hovers around five years no matter how many points you buy. That is typical, because each point buys the same 0.25% reduction. What scales dramatically is the payoff if you stay: over 30 years, total interest savings reach roughly $17,662 with 1 point, $35,107 with 2 points, and $52,380 with 3 points — before subtracting the upfront cost. A buyer certain they will hold this loan for decades could reasonably justify 2 or 3 points, while any uncertainty pushes you back toward 0 or 1.

Run the Numbers Yourself

Your quotes will differ from our example, so plug your own figures into the calculator before deciding. Enter the loan amount, term, and both rates (with and without points), then divide the point cost by the monthly payment difference to get your personal break-even. It takes less than a minute and turns a vague sales pitch into a concrete yes-or-no decision.

Frequently Asked Questions