Quick answer: A mortgage rate buydown temporarily lowers the effective rate on your mortgage for the first 1–3 years — a 3-2-1 buydown is 3 points lower in year one, 2 in year two, 1 in year three — with the difference paid from an escrow account funded at closing, usually by the seller or builder. You qualify at the full note rate, and unused funds are credited back if you refinance or sell.
When rates are high, a buydown is one of the few tools that lowers your payment without permanently paying for it. Here is how temporary buydowns actually work, the corrected math on a real example, who pays, and when a buydown beats a price reduction.
Key takeaways
- A temporary buydown reduces your effective rate for the first 1–3 years: 3-2-1 (three years), 2-1 (two years), or 1-0 (one year).
- The reduction is funded from a buydown escrow account at closing — typically a seller or builder credit, not your cash.
- You qualify at the full note rate, so a buydown eases early payments but doesn't stretch your approval.
- If you refinance or sell during the buydown period, remaining escrow funds are generally credited toward your payoff — the money isn't lost.
What is a mortgage rate buydown?
A mortgage rate buydown is a financing arrangement that lowers the effective interest rate on your loan for the first one to three years. Your actual note rate never changes — instead, an escrow account funded at closing pays the difference between your reduced payment and the full payment each month. When the buydown period ends, you simply start paying the full note-rate payment you qualified for on day one.
Buydowns surged back into use when rates jumped, because they let sellers and builders solve a buyer's payment problem without cutting the price. They remain a standard offer on new-construction deals in Las Vegas in 2026. If you are comparing a builder’s buydown against simply taking the market as it is, our conventional loan site tracks the current conventional rate picture in Las Vegas.
3-2-1 vs. 2-1 vs. 1-0: the three common structures
| Structure | Year 1 | Year 2 | Year 3 | Year 4+ |
|---|---|---|---|---|
| 3-2-1 buydown | Note rate − 3% | Note rate − 2% | Note rate − 1% | Full note rate |
| 2-1 buydown | Note rate − 2% | Note rate − 1% | Full note rate | Full note rate |
| 1-0 buydown | Note rate − 1% | Full note rate | Full note rate | Full note rate |
The deeper the buydown, the more the escrow account costs to fund — which is why 2-1 buydowns are the most commonly negotiated: meaningful year-one relief at roughly half the cost of a 3-2-1.
The real math: a $350,000 loan at 6% with a 3-2-1 buydown
30-year fixed, $350,000 loan, 6% note rate. Full principal & interest payment: $2,098/month.
Year 1 at 3%: $1,476/mo — escrow pays $622/mo
Year 2 at 4%: $1,671/mo — escrow pays $427/mo
Year 3 at 5%: $1,879/mo — escrow pays $219/mo
Total buydown cost (escrow funded at closing): ≈ $15,238
Years 4–30: the full $2,098 principal & interest payment. Taxes and insurance are separate. Run your own numbers in our 3-2-1 buydown calculator.
Valley West takeA buydown is a payment tool, not a discount — the honest comparison is what else that seller credit could buy. On the example above, $15,220 could instead permanently buy the rate down a fraction of a point, or come off the price. If you expect to refinance within 2–3 years, the temporary buydown usually wins: you get the deepest payment relief exactly when you need it, and the unused escrow comes back to you at payoff. If you plan to hold the loan for a decade, run the permanent-points comparison first.
Who pays for a buydown?
Usually the seller or builder, through a credit at closing. The credit funds the buydown escrow account, and the escrow pays part of your payment each month during the buydown period. Lender-funded buydowns exist too. Two rules of thumb:
- The cost of the buydown equals the total payment difference over the buydown period — nothing more, nothing less.
- Seller credits are capped by loan program (interested-party contribution limits), so your loan officer will confirm the credit fits your loan type before you negotiate it.
Buydown vs. price cut vs. permanent points: which wins?
It depends on how long you'll keep the loan. The same seller dollars can go three ways, and each has a different shape:
| Temporary buydown | Price reduction | Permanent points | |
|---|---|---|---|
| Payment relief | Large, but only years 1–3 | Small, forever | Moderate, forever |
| Best if you… | Expect to refinance or income to rise | Want lower loan balance and taxes | Will hold the loan long-term |
| If you refinance early | Unused escrow credited back | Benefit already banked | Points money is spent |
This is a ten-minute side-by-side we run constantly: same credit, three scenarios, real payments. As an independent mortgage lender we price it across our full program range — see today's rates, and if you're weighing FHA, read how FHA mortgage insurance changes the total payment.
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What is a temporary mortgage buydown?
An arrangement that lowers your effective interest rate for the first one to three years of the loan. The payment difference is covered by an escrow account funded at closing, usually by a seller or builder credit. After the buydown period, payments return to the full note rate.
Do I qualify at the lower buydown rate?
No. You generally must qualify at the full note rate. A buydown eases your early payments; it does not increase your buying power.
What happens to the buydown money if I refinance or sell?
Remaining funds in the buydown escrow are typically credited toward your loan payoff, so the unused portion generally comes back to you rather than being lost.
Can I get a buydown on an FHA or VA loan?
Temporary buydowns are available on conventional, FHA, and VA loans, subject to each program's rules on seller contributions and qualification. Your loan officer confirms fit for your specific loan.
Is a 2-1 buydown cheaper than a 3-2-1?
Yes — roughly half the cost, because the escrow only needs to cover two years of smaller payment differences instead of three years of larger ones. That's why 2-1 is the most commonly negotiated structure.
Does the buydown change my actual interest rate?
No. The note rate stays the same for the life of the loan. The buydown escrow simply pays part of your payment during the buydown years — which is also why unused funds can be returned.
The bottom line
A mortgage rate buydown is negotiating leverage turned into payment relief: the seller funds your first years at a lower effective rate, you qualify at the real rate, and the unused money comes back if you exit early. It beats a price cut when payment is the problem, and it loses to permanent points when you're holding for the long haul. Get all three scenarios priced before you sign anything — that's the whole decision.
Three scenarios. Real numbers. Ten minutes.
Talk to a local Las Vegas loan officer and see the buydown, price-cut, and permanent-points math side by side for your deal.
Start your fast quoteSources
- CFPB — What is a temporary buydown: consumerfinance.gov
- Fannie Mae Selling Guide — Temporary Interest Rate Buydowns (B2-1.4-04): selling-guide.fanniemae.com
- CFPB — What are discount points and lender credits: consumerfinance.gov
Across Valley West: Structuring a buydown on a conventional loan? Our conventional site covers the program end to end.
Keep reading
Last updated: July 17, 2026 — fully rewritten; example math corrected and verified ($350,000 at 6%: $2,098/mo P&I).
