When sellers and builders start offering credits, every buyer hears the same advice: use it to buy down your rate. Sometimes that is exactly right. But a mortgage rate buydown is a tool with real break-even math attached, and if you are fuzzy on how long you will stay in the home or how the numbers pencil, that free-feeling money can cost you more than the credit was worth. A buydown means paying money upfront, yours or the seller's, in exchange for a lower interest rate, either temporarily or for the life of the loan. Which kind, whether to do it at all, and what to ask for instead are the decisions that matter, so here are all three with real numbers.
Two distinct animals share the name:
Buydowns went dormant for over a decade for a simple reason: from roughly 2010 through 2021, rates were so low there was nothing worth buying down. They came roaring back when rates jumped in 2022, first through builders, whose incentives commonly fund large buydowns, and later through ordinary sellers offering credits when their markets slowed. The credit itself is just money; how seller credits work is its own topic, and a buydown is only one of the things a credit can buy.
Buyers hear 2% lower for the first year and assume a discount. There is no discount anywhere in a temporary buydown. The lender gets paid the full note rate on every payment. The buydown money, usually a seller credit, sometimes your own cash, goes into a subsidy account, and each month that account tops up the gap between your reduced payment and the real one. The cost of a 2-1 buydown is exactly the sum of those subsidies, which depends on your loan amount and where rates are that day.
Two mechanics follow from that structure, one friendly and one strict:
Here is what the whole menu looks like on a $500,000 loan amount, 30-year fixed, at an illustrative 6.75% note rate. (That rate and these buydown costs reflect the market around this episode's air date, 7/21/2025; the mechanics are evergreen, but pricing moves daily, so confirm current numbers with a lender.) Principal and interest at 6.75% runs about $3,243 a month.
Every one of those dollar figures is money someone actually pays. When a seller funds it, it feels free. It is your money wearing a costume, and the next section is why that matters.
A permanent buydown trades an upfront point for a payment that stays lower forever, so the question is how long you need to keep the loan for the trade to pay off. On our same $500,000 loan, one point costs $5,000 and moves the rate from 6.75% to roughly 6.5%, cutting the payment from about $3,243 to about $3,160. That is $83 a month, and $5,000 divided by $83 puts the break-even right around 60 months. Hold the loan past five years and the point was a good buy; refinance or sell in year two and most of that $5,000 evaporated. Lenders know their loans pay off, on average, after roughly 60 to 65 months, and they price points accordingly. The rule of thumb of one point per quarter percent holds reasonably well out to about two points for a half percent; beyond that, the rate sheet gets less generous. Points also open a gap between the APR and the interest rate, which is the quickest place to see their true cost.
The permanent version does carry one advantage the temporary version legally cannot: you qualify at the bought-down rate. When a debt-to-income ratio is genuinely tight, permanent points can be the difference between qualifying for the home and writing a smaller offer.
The disadvantage is the mirror image of the temporary buydown's refund: points are a sunk cost. The moment they are paid, the money is gone, and no refinance recovers it. Sunk costs also warp judgment. We watch borrowers refuse a refinance that clearly helps them because they cannot stomach abandoning the rate they paid points for, and we watch temporary-buydown borrowers cling to a 4.75% first-year rate they could beat with a permanent 5.5% refinance because the subsidy account feels like winnings. Run the math forward from today, always. The money behind you is spent either way.
Where we will show our cards: Jeb leans toward taking the price cut, and Josh is no fan of temporary buydowns at all, because they spend your equity through a subsidy account a month at a time. A seller willing to fund a buydown is usually willing to give you the same dollars in other forms, and the alternatives deserve a side-by-side look every time:
Seller-funded money plays a trick on the brain that behavioral folks see with credit cards: once it stops being your cash, it becomes monopoly money, and people spend it carelessly. Treat every seller credit as your own dollars, because the seller was willing to hand them to you in whichever form you asked.
The honest checklist is short. How long will you realistically be in this home and this loan? Nearly every option pencils past five years, and almost nothing pencils under two. Is the money yours or the seller's, and did you compare the credit against a price cut and paid closing costs? Would a rate drop actually trigger you to refinance, even mid-buydown? And one rule sits above all of it: if you cannot afford the payment at the full note rate, this is not your house yet. Rates staying high is a real possibility, and a refinance you are counting on is only a hope. Nobody can promise where rates go.
There is no universal right answer here, and that is the point. A buyer convinced rates fall within two years might rationally take the seller-funded 2-1 and keep the refund feature in her pocket. A family planted for a decade with tight ratios might be best served by permanent points. Another buyer should take the price cut and the cash. What should worry you is any lender or agent pushing one structure before laying out all three options with real numbers, because a professional's job is the comparison, and the decision belongs to you. Penciling that three-way comparison for your actual loan amount, timeline, and tax picture is exactly what we do on a free Roadmap call: about 20 minutes, and you leave with the real numbers on all three paths. We have run that comparison across $700M+ in funded loans, and the winning answer changes family to family. Anyone who claims to have solved it for everyone is selling something.
Stop guessing what you can really afford
Tell Josh and his team your situation, and you'll get the exact price range you qualify for, the loan that gets you the most home for your money, and a step-by-step plan to close. They handle your loan directly, never a referral, and go far beyond a basic pre-approval, so you stop second-guessing, tour with confidence, and write offers sellers take seriously.
Build my Roadmap →A temporary buydown lowers your effective payment for the first one to three years using money set aside in a subsidy account, then the loan runs at the full note rate; a 2-1 buydown is 2% lower in year one and 1% lower in year two. A permanent buydown pays discount points upfront for a rate that stays lower the entire term. The temporary version refunds unused subsidy if you exit early; points are a sunk cost.
The cost equals the total payment subsidy across the two years, so it depends on your loan amount and current rates. On a $500,000 loan at an illustrative 6.75%, the first year at 4.75% saves about $635 a month and the second year at 5.75% saves about $325, totaling roughly $11,500, or about 2.3 points. Most 2-1 buydowns are funded by seller or builder credits negotiated in the purchase contract.
A temporary buydown does not. Underwriting guidelines require lenders to qualify you at the full note rate, not the subsidized first-year rate, so a 2-1 buydown adds zero buying power. A permanent buydown is different: because the rate is genuinely lower for the life of the loan, you qualify at the bought-down rate, which can matter when your debt-to-income ratio is close to the program ceiling.
It depends on your timeline and cash position, because the same seller dollars fund either. A price cut is permanent: more equity from day one and lower property taxes for as long as you own, though the monthly impact is small, roughly $6 to $7 per $1,000 at recent rate levels. A buydown produces a much bigger monthly payment cut but carries break-even risk. Run both against your realistic time in the home before choosing.
With a properly structured temporary buydown, the unused balance in the subsidy account is applied for your benefit, reducing your loan payoff or covering refinance costs, because the money was parked rather than spent. Permanent buydown points work the opposite way: once paid, they are gone, and refinancing early means you never recovered them. That refund feature is the temporary buydown's best argument for buyers expecting rates to fall.
Compare three uses side by side: a buydown, a price reduction, and paying your closing costs and prepaids. Putting the credit toward closing costs keeps your own cash in the bank after closing with no sunk cost and no break-even math, which suits buyers who value liquidity. A buydown maximizes the early payment relief instead. There is no universal answer; the right split depends on your reserves, timeline, and rate outlook.