Guides for loan officers

What a Rate Buydown Actually Costs

By Travis · October 26, 2026 · 3 min read

Buydowns come back into conversation whenever rates feel high. A listing advertises a payment based on a rate well below the going rate, and for a moment it looks like someone found a loophole. Nobody found a loophole. A buydown is a prepaid discount, and like every prepaid discount, the question is who pays and whether it is worth it.

How a temporary buydown works

The most common version is called a 2-1 buydown. In the first year, the borrower's payment is calculated as if the rate were two percentage points lower than the actual loan rate. In the second year, it is calculated one point lower. From the third year on, the borrower pays the full rate on the loan for the rest of the term.

The loan itself never changes. The difference between the reduced payments and the full payments is paid in advance, in one lump sum at closing, into an escrow account that makes up the difference each month. In many cases the seller or the builder pays that lump sum as a concession, which is why buydowns show up so often in new construction listings.

The math that matters

Because the total cost is fixed and prepaid, the real question is how long the buyer stays in the loan. If a buyer sells or refinances within the buydown period, some of the prepaid money may never get used the way it was planned, depending on how the account is handled at payoff. If the buyer stays well past the step-up years, the buydown did exactly one thing: it made the first two years easier, at a known price.

There is also the step-up itself to plan for. A payment that rises twice in two years is manageable when a household expects it and budgets for it. It is a problem when the lower first-year payment is treated as the real payment, and the household spends right up to it.

Buydown or price cut

When a seller offers a buydown, it is fair to ask what the same money would do as a simple price reduction. A lower price lowers the loan amount, the payment, and the interest paid over time, and it never steps back up. A buydown puts all of its value into the first two years. Neither answer is right for everyone, but the comparison should always be made in real numbers for the specific house, not in the headline payment from the flyer.

This is also why a buydown quote from one lender cannot be compared to a plain quote from another without lining up the full costs side by side.

What to send your clients

Buyers mostly encounter buydowns as advertising, and advertising rarely includes the step-up schedule. A short, plain explanation from their loan officer, before they fall for a house based on a first-year payment, is exactly the kind of guidance clients remember.

That is the sort of timely, plain-English topic LO Market Update puts in front of your database every month under your name, so your clients hear the honest version from you first.

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