2-1 Buydown vs. Permanent Rate Buy-Down: Which Is Better?

A 2-1 buydown is a temporary rate reduction that cuts your mortgage payment for the first two years, while a permanent rate buy-down uses discount points to lower your rate for the entire loan term. Which is better comes down to one number: how long you expect to hold the property. If you'll likely stay five years or more, the permanent buy-down almost always wins on total interest saved; if you expect to move or refinance within two to three years, a 2-1 buydown — especially one a seller pays for — can put thousands back in your pocket in the window that matters.

This is the kind of math I run daily as a home loan lender of 24 years. Both tools reduce your payment, but they behave completely differently on your cash flow and your long-term costs. Let me walk you through the mechanics, the real numbers, and the situations where each one is the right call.

The decision matrix at a glance

This table lays out how the two options differ across the concerns that actually drive the choice — your cash flow, your hold time, and who pays.

How the 2-1 buydown works

A 2-1 buydown is a temporary rate reduction that lasts exactly two years. In year one, your payment is calculated at a rate 2 percentage points below your note rate (the full contract rate on your loan). In year two, it's 1 point below. Starting in year three, your payment steps up to the full note rate and stays there for the rest of the loan.

Your actual note rate never changes. What happens is that someone — usually the seller or builder — deposits a lump sum into an escrow account at closing. Each month during the buydown period, your loan servicer draws the difference out of that account and adds it to your reduced payment, so the lender always receives the full note-rate amount (Cornell Wex). The buydown is a payment subsidy, not a rate cut you keep.

A real-dollar example

Using a $380,000 loan at a 7.25% note rate, a 2-1 buydown costs about $8,957 and lowers your principal-and-interest payment by roughly $494 a month in year one and $253 a month in year two. Here's how the numbers line up:

One thing that surprises many buyers: you still have to qualify at the full note rate, not the reduced buydown rate (VA Loan Network). The lender wants proof you can afford the payment that kicks in at year three.

How a permanent rate buy-down works

A permanent buy-down uses discount points to lower your actual interest rate for the entire life of the loan. One discount point costs 1% of your loan amount and is paid upfront at closing to reduce your interest rate (Fannie Mae). By paying more at closing, you receive a lower interest rate and therefore pay less over time (CFPB). On a $400,000 loan, one point costs $4,000 to drop your rate for the life of the loan.

Unlike the 2-1 buydown, this is a rate cut you keep. Your note rate — and therefore your monthly principal-and-interest payment — stays lower from your first payment through your last. Points don't have to be round numbers — you can pay 1.375 points, 0.5 points, or even 0.125 points (CFPB). Because the benefit lasts the full term, the permanent buy-down is the stronger play the longer you hold the home.

The breakeven point decides it

Every buydown has a breakeven point: the month when the cumulative monthly savings finally equal what you paid upfront. After that, the buydown starts paying you back. Before it, you're out of pocket. Your hold time is the entire decision, and it's the number I push every buyer to pin down before choosing. Paying points is only a good trade if you plan to keep the loan long enough to recoup them (CFPB).

Here's the honest tension. A 2-1 buydown front-loads all its savings into two years and then stops — it returns to the full payment in year three. A permanent buy-down costs more upfront but keeps saving you money every single month for as long as you own the loan. The break-even math differs for each: a temporary buydown is worth it only if you actually stay and enjoy those first two years of reduced payments; discount points earn their keep only if you stay past the breakeven.

The 5-year comparison: a $400,000 loan

Let me run the actual numbers so you can see the winner, not just the theory. I'm using a $400,000 loan at a 6.5% note rate held for five years — the point where the two options genuinely start to diverge. The 2-1 buydown charges you 4.5% in year one and 5.5% in year two before stepping up to 6.5%; the permanent buy-down with 2 points brings your rate to 6.0% for the full term.

The honest tradeoffs of each option

Neither choice is free, and both have a real downside a lender who quotes you a payment often glosses over.

The 2-1 buydown's catch is year three. Your payment jumps up to the full note rate at the start of year three — on the $380,000 example, that's a leap from $2,340 to $2,592 a month. If your income hasn't grown, or your budget was built around those first two reduced payments, that step-up can be a genuine shock (Herring Bank). And because the buydown doesn't change your note rate, you get no lasting interest savings — the benefit ends the moment the escrow account runs dry (Cornell Wex).

The permanent buy-down's catch is the upfront cost and the slow payback. Each discount point costs a full 1% of the loan amount, and you only recoup that through years of smaller payments. On a $400,000 loan, one point alone costs $4,000 at closing (Fannie Mae), and buyers often buy two or more to get a meaningful rate drop. If you sell or refinance before the breakeven, that money is simply gone — you paid for rate you never got to enjoy. The savings from discount points are spread out and quiet, which is exactly why buyers who move quickly end up overpaying for a permanent buy-down.

There's also a common seller-side trap worth naming. A seller who offers a buydown will often add the cost into the purchase price to offset it, so the "free" reduction is partly paid through a higher offer on the home. Always compare a seller-paid buydown against a straight price reduction to see which actually nets you more.

Choose the 2-1 buydown if…

You expect to move or refinance within two to three years. If you plan to relocate for work, trade up once your family grows, or refinance the moment rates drop, the 2-1 buydown delivers its savings exactly in the window you'll occupy. That's why it's so popular with buyers who want to lock in today's high-rate environment while keeping early payments manageable.

You're counting on a seller or builder to cover the cost. A seller-paid 2-1 buydown is often better value than an equivalent price cut on the home, because the reduction goes straight into your payment instead of lowering the price of an asset you don't keep. Just confirm the buydown wasn't quietly folded into a higher purchase price.

You want cash-flow relief now, in the first two years, when you're also absorbing moving costs, furniture, and the inevitable first-year repairs.

Choose the permanent buy-down if…

You plan to stay in the home five years or more. If the home is your long-term residence — you're raising kids here, retiring here, or you've lived in the same town for decades — the permanent buy-down keeps lowering your payment for your entire loan, and the total interest saved will eventually outweigh the upfront cost. Paying points means paying more at closing in exchange for a lower rate and a lower payment over the life of the loan (CFPB).

You want a stable, predictable payment with no step-up surprise in year three. Some buyers prefer the certainty of one fixed low rate over a two-year honeymoon followed by a jump.

You're buying points with money you won't need for years and you understand you're making a long-term bet on the rate. If you're confident you'll outlast the breakeven, the permanent buy-down is the financially stronger choice for a long hold.

You want a stable, predictable payment with no step-up surprise in year three. Some buyers prefer the certainty of one fixed low rate over a two-year honeymoon followed by a jump.

You're buying points with money you won't need for years and you understand you're making a long-term bet on the rate. If you're confident you'll outlast the breakeven, the permanent buy-down is the financially stronger choice for a long hold.

Beat your rate with your own numbers

The breakeven math above works for any loan — the only inputs are your rate, your balance, and how long you'll stay. I built a calculator that runs this exact comparison on your actual figures: it shows your monthly payment change, how many months the closing costs take to pay back, and what the savings add up to over 1, 3, 5, and 10 years. It covers principal and interest only and is an estimate, not a loan offer. Whether you're weighing a buydown on a new purchase or wondering if a lower refinance rate would pay for its own closing costs, the math is the same.