Buydowns Explained — Points vs. the 2-1

"Buying down the rate" covers two genuinely different tools that get blurred together constantly: permanent buydowns (discount points) and temporary buydowns (the 2-1 and its cousins). One changes your rate forever; the other changes your payment for a year or two. They solve different problems, and the math for judging them is refreshingly simple.

Permanent buydowns: discount points

A discount point is prepaid interest: you pay a lump sum at closing — one point equals one percent of the loan amount — and in exchange, the lender gives you a lower rate for the life of the loan. Fractions of points work the same way; every rate on a lender's sheet has a price attached, and points are how you move down the ladder.

The lever runs both directions, by the way: accept a slightly higher rate and the lender pays you — a lender credit toward closing costs. Points and credits are the same dial turned opposite ways.

The break-even way to think about points

Whether points make sense is not a matter of opinion. It's division.

A hypothetical example, purely for illustration: suppose paying $4,000 in points on a loan would lower your monthly payment by $80. Then:

$4,000 upfront ÷ $80 saved per month = 50 months to break even

Keep the loan past month 50 and the points earn their keep, compounding in your favor every month after. Sell or refinance before month 50 and you paid for a discount you never fully collected. That's the entire framework: the cost of the points, divided by the monthly savings, compared against how long you'll realistically keep the loan.

Note the word realistically. The loan may say thirty years; your life may say five. People relocate, upsize, and refinance far more often than they expect on closing day. This is the same trap hiding inside APR comparisons, which quietly assume you'll hold to maturity. And if part of you is planning to refinance the moment rates dip — that plan argues against paying points, since a refinance resets the clock before the break-even arrives.

Points bought on a purchase can also be funded by seller concessions, which changes the math dramatically: a break-even calculated on someone else's money is a short break-even indeed.

Temporary buydowns: the 2-1 and friends

A temporary buydown doesn't change your actual note rate. Instead, a fund is set up at closing that subsidizes your payment for the first year or two:

• 2-1 buydown: your payment is calculated as if the rate were two percentage points lower in year one, one point lower in year two, then the real note rate from year three on.
• Variations exist — a 1-0 (one year of relief), a 3-2-1 (three years, stepping down) — same architecture, different depth.

The subsidy money sits in an account and bridges the gap between your reduced payment and the true payment each month. If you refinance or sell before the fund is used up, the remainder typically credits back against your loan balance — the money isn't simply lost.

Who funds temporary buydowns

Here's the detail that determines whether a temporary buydown is a gift or a mirage: temporary buydowns are typically funded by someone other than you — most often the seller (as a concession), sometimes a builder. Used this way, it's a genuinely clever piece of negotiation: a seller credit converted into two years of meaningfully lighter payments while you settle into the home.

Funding a temporary buydown yourself rarely pencils out — you'd be prepaying your own payment reduction dollar-for-dollar, which is just your money coming back to you with extra paperwork. If you're spending your own funds, permanent points usually deserve the comparison instead.

One important qualifying note

You qualify at the real note rate, not the subsidized year-one rate. A temporary buydown eases your early payments; it doesn't stretch what you can borrow. That's a guardrail, and an honest one — the loan has to work at the payment you'll actually face in year three. (How qualifying ratios work.)

When each makes sense

Points tend to fit when: your realistic horizon comfortably clears the break-even; you have spare cash beyond your down payment and reserves; or a seller credit is on the table with costs already covered.

A temporary buydown tends to fit when: a seller or builder is funding it; your early years are the tight ones (one income transitioning to two, renovation costs up front); or you value breathing room now more than a marginally lower rate forever.

Neither tends to fit when: paying points would drain the reserves that make your file strong, or a near-term refinance is genuinely likely.

And the honest wildcard: nobody knows future rates. A permanent buydown is partly a bet that you'll keep this loan a long time. Hold that bet loosely, and let the arithmetic — not the sales pitch — make the call. (What actually moves rates is worth reading before making any rate bet.)

Run this math on your real ladder

Everything above used made-up numbers on purpose. The Best Option tool on our home page runs exactly this comparison on your actual rate ladder — each rung's cost, payment, and break-even, side by side, so you can see where the arithmetic tips for your scenario and timeline. Education first; the decision stays yours.