When a home sits on the market in a higher-rate environment, the natural instinct is to cut the price. A 3-2-1 buydown is a better tool for most sellers, and a better deal for most buyers — the seller keeps the sale price intact while the buyer walks away with payments that are thousands of dollars lower in the first three years. Here is what it is, how the math works, and why both sides of the Saint George, Utah market should consider it.
What is a 3-2-1 buydown and how does the math work?
A 3-2-1 buydown is a temporary interest-rate reduction on a fixed-rate mortgage that lowers your payment for the first three years. The rate steps down by three percentage points below the note rate in year one, two points in year two, and one point in year three, then returns to the full note rate from year four onward.
The underlying loan is not an adjustable-rate mortgage — there is no index, margin, or cap structure. The note rate never changes. What changes is how much interest the borrower is responsible for in those early years, because the rest has already been deposited into a dedicated account.
The money moves in a simple four-step pattern. First, the lender adds up every dollar of interest the borrower will not pay across the three years. That full amount is deposited at closing into a buydown account held by the servicer. Each month, the borrower pays the reduced amount and the servicer draws the difference from the account to make the lender whole. The account empties on schedule at the end of year three, and the payment steps up to the note-rate payment.
The 2-1 and 1-0 buydowns are the same idea over shorter schedules. A 2-1 reduces the rate by two points in year one and one in year two; a 1-0 reduces it by one point for a single year. The 3-2-1 offers the deepest relief but the largest upfront cost (CNBC).
The buyer's advantage: easing into homeownership
A 3-2-1 buydown turns the hardest years of homeownership into the cheapest ones. Instead of stretching to make the full mortgage payment while also covering moving costs, furniture, and first-year maintenance, you get significant payment relief in years one through three — exactly when a new homeowner's cash is thinnest.
To see the scale of that relief, look at a concrete example. On a $350,000 loan at 6.25%, a 2-1 buydown — the close cousin of the 3-2-1 — drops the payment to $1,722 in year one at 4.25%, saving about $433 a month, or $5,196 over that first year (CNBC). A 3-2-1, which cuts a full three points in year one, saves even more in that opening year before the savings taper.
Here is the one thing most buyers miss: you still have to qualify at the full note rate, not the reduced year-one rate. Underwriters size the loan on the payment you will owe for the overwhelming majority of its life, so a buydown does not increase how much house you can qualify for — it changes the early cash flow of a loan you already qualified for.
That distinction matters. A buydown is the right tool for a buyer whose income is genuinely rising, who has a concrete plan for the first three years, or who expects to refinance when rates fall. It is the wrong tool for a buyer who needs the year-one payment to make the house work at all — because year four arrives regardless, and the payment steps up to the number it was always going to be.
The seller's secret weapon: why buydowns beat price drops
For a seller, the argument for a buydown over a price cut comes down to a single number: the same dollars buy far more buyer relief when spent on a rate buydown than on a price reduction. The payment math is not close.
Compare the two side by side. A seller who drops the price by $10,000 on a $500,000 home saves the buyer roughly $60 a month — a concession so small it rarely changes a buyer's decision. Spend that same $10,000 as a rate buydown on a $500,000 loan and you can lower the monthly payment by roughly $600 a month in year one (Aspyre Realty Group). The buyer's budget problem is solved, not merely softened.
Another way to see it: dropping the price by $27,000 saves a buyer about $174 a month spread over 30 years, while the same $27,000 as a buydown saves $1,501 a month in year one (Grey Square). Buyers in a high-rate market are focused on the monthly number, and a buydown delivers relief where it matters most.
There is also a strategic benefit beyond the payment. A buydown lets the seller keep the sale price intact for appraisal and comparable-sale purposes, protecting the neighborhood's value picture while delivering real relief to the buyer (Grey Square). And the marketing signal is different: saying "seller will buy your rate down" reads as understanding a buyer's payment concern, where a price cut reads as "my price was too high" (FastExpert).
When a price cut is still the better move
A buydown is not a cure-all, and honest advice names the exceptions. If your home is simply priced above comparable sales, no buydown fixes an appraisal that will not support the number — you need the price to meet the market so the deal finances (FastExpert). And if buyers perceive the home as overpriced and are not even touring, a price cut widens the pool of showings in a way a quiet buydown cannot.
There is also a lender cap to respect. A seller-paid buydown counts as a seller concession, and every loan type limits how much a seller can contribute — roughly 3 to 6% of the purchase price on conventional loans depending on down payment, 6% on FHA, and 4% on VA (Grey Square). A price reduction has no such cap, and you can combine both strategies on the same deal.
The right move depends on what is blocking the sale. Few showings and an overpriced listing points to a price cut. Showings that stall into weak offers points to a payment problem, which a buydown targets directly (FastExpert).
Questions sellers and buyers should ask before committing
Can a buydown be added after the contract is signed? Yes. You can request one during the inspection period or after disclosures using a written addendum both parties sign, so a mid-escrow buydown request is a standard move in most markets (Grey Square).
Does a buydown change the buyer's qualification? No. Lenders qualify at the full note rate, not the reduced rate, so the buyer's debt-to-income ratios are calculated against the higher payment. Year one becomes a genuine cash cushion, not a teaser that stretches the buyer's approval (Grey Square).
What happens to the buydown funds if the buyer refinances early? The remaining funds are applied to the loan payoff at closing. You do not lose the money outright, but you do not pocket it separately either — so it is worth discussing timing with a lender before structuring the request (Grey Square).
Is a 3-2-1 or a 2-1 right for me? A 3-2-1 gives the deepest first-year relief and lasts a year longer, but it costs more and its subsidy is larger. A 2-1 covers the first two years at a lower cost. Your lender can run both schedules so you can compare the payment levels and the exact deposit each requires (Lower Mortgage).
For a Saint George buyer or seller weighing the numbers, the decision is rarely about whether a buydown works — it is about which structure and which dollar amount fit your specific loan. That is a conversation worth having with a loan officer before the offer letter is written.
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