Mortgage Rate Buydowns Explained: 2-1 Buydowns, Points, the Math
How 2-1 buydowns and discount points actually work, what each costs on an illustrative $640K loan, and the breakeven math that decides which pays.
On an illustrative $640,000 loan at 6.5%, a 2-1 buydown costs about $14,500 and a single discount point costs $6,400. Both “buy down” your rate, both get paid at closing, and they are completely different products: one is a temporary subsidy of your payment, the other is a permanent purchase of a lower rate. Buyers conflate them constantly — and sellers and builders exploit the confusion. Here’s the math that separates them.
(All figures in this post are illustrative, computed at example rates on a 30-year fixed $640,000 loan — 20% down on an $800,000 purchase. Your rate sheet will differ; the structure of the math won’t.)
The 2-1 buydown: a prepaid payment subsidy
A 2-1 buydown makes your payment behave as if your rate were 2 points lower in year one and 1 point lower in year two. Your actual note rate never changes — the difference is paid out of an escrow account funded at closing, almost always by the seller or builder, not by you.
| Period | Effective rate | Monthly P&I | Monthly savings vs. note rate |
|---|---|---|---|
| Year 1 | 4.5% | ~$3,243 | ~$802 |
| Year 2 | 5.5% | ~$3,634 | ~$411 |
| Years 3–30 | 6.5% | ~$4,045 | $0 |
Cost of the buydown = the sum of the subsidies: ($802 × 12) + ($411 × 12) ≈ $14,560. That number gets deposited into an account at closing and drips into your payment each month.
Three things to understand before you get excited:
- It’s seller money — which means it’s really price. A seller funding a $14,560 buydown is giving you $14,560; the same dollars could be a price cut or closing-cost credit instead. Which is better for you depends on the comparison below.
- Year three is the real payment. Lenders generally qualify you at the full note rate, which protects you on paper — but plenty of buyers plan around the year-one payment and feel the jump anyway. If $4,045 doesn’t fit your budget, $3,243 for twelve months doesn’t fix that.
- The “you’ll just refinance before year three” pitch is a bet on rates falling, made by the person selling you the house. Maybe rates fall. Maybe they don’t. If the deal only works with a refinance, the deal doesn’t work yet. (If you do refinance or sell mid-buydown, the unused escrow balance is typically applied to your loan — ask your lender how your specific buydown agreement handles it.)
Discount points: buying a permanently lower rate
A point costs 1% of the loan amount — $6,400 here — and permanently reduces your rate. How much reduction one point buys varies by lender and day; a common rough figure is around a quarter percent, but always price it from a real rate sheet.
Illustrative: paying one point to go from 6.5% to 6.25%:
| 6.5%, no points | 6.25%, one point | |
|---|---|---|
| Upfront cost | $0 | $6,400 |
| Monthly P&I | ~$4,045 | ~$3,941 |
| Monthly savings | — | ~$104 |
| Breakeven | — | $6,400 ÷ $104 ≈ 62 months |
That’s the entire decision framework: will you keep this loan, untouched, for longer than the breakeven? In this example, about five years.
- Hold the loan 10+ years → the point pays for itself twice over.
- Sell or refinance at year three → you burned ~$2,700.
Be honest about the refinance half of that question. Buyers who pay points and believe rates will drop soon are betting against themselves: a refinance resets the loan and vaporizes the unrecovered cost of the points.
2-1 buydown vs. points vs. price cut: same dollars, three outcomes
Suppose a motivated seller will part with ~$14,500 of value. Three ways to take it, on our illustrative loan:
| Option | Years 1–2 | Year 3 onward | Bet you’re making |
|---|---|---|---|
| 2-1 buydown (~$14,560) | Save ~$802/mo, then ~$411/mo | Nothing — full payment | Rates fall; you refi before the subsidy ends |
| Save ~$233/mo | Save ~$233/mo, every month, for the life of the loan | You keep the loan a long time | |
| $14,500 price reduction | Slightly smaller loan, payment ~$92/mo lower, less REET/tax basis effects for the seller | Same, permanently | None — works in every future |
There’s no universally right column. The buydown front-loads relief (genuinely useful if year one carries moving costs, furniture, or a starting salary that will grow). Points maximize total savings for long holders. The price cut is the only option that doesn’t require predicting the future — which is why it’s the default answer when you’re unsure.
One more honest note: builders love buydowns because they preserve the headline price of the community’s comps. When a builder offers a buydown but refuses an equivalent price reduction, that tells you whose interest the structure serves.
Quick decision checklist
- Can you afford the full note-rate payment? If no, stop — no buydown fixes it. Re-run your numbers in the mortgage calculator and our Seattle affordability guide.
- Seller/builder offering credits? Compare buydown vs. price cut vs. closing-cost credit in dollars across your expected hold period, not by which sounds best. (Closing-cost credits offset the buyer costs you’re paying anyway.)
- Paying your own money for points? Compute the breakeven month and compare it to your honest answer for “how long until I move or refinance?” Lender caps and diminishing returns apply as you stack points.
- Get two or three rate sheets. The price of a quarter-point of rate varies by lender — sometimes by a lot — and the cheapest buydown is a lender who’s simply cheaper.
Rate structure is one of the two big negotiations in a purchase. The other is what you pay the humans involved — and since the NAR settlement put buyer-agent compensation explicitly on the table, that’s a number you should see before you commit to anyone. Manaky Homes puts those numbers in daylight: a free marketplace where Greater Seattle agents publish their fees side by side. The waitlist is open now — grab a spot and walk into your purchase knowing every number on the table.
