Mortgage Buydown: Temporary vs Permanent

A mortgage buydown reduces your interest rate by paying an upfront fee (called points) to the lender. A permanent buydown lowers your rate for the entire loan; a temporary buydown (like a 2-1 or 3-2-1 structure) gives you a discount in early years, then steps the rate up annually until it reaches the market rate. Each works best in different scenarios, and understanding the math helps you decide if paying to reduce your rate makes sense.

Permanent Buydowns: One Rate for the Life of the Loan

A permanent buydown reduces your interest rate for the entire duration of your mortgage. You pay a fixed fee (points) upfront, rolled into closing costs or paid out of pocket, and your rate remains lower on all 360 payments (for a 30-year loan).

If the market rate is 7.0% and you buy down to 6.5%, that 6.5% is your rate for 30 years, regardless of market movements. You pay roughly 0.25–1.0% of your loan amount per 0.25% rate reduction, depending on the lender, your credit, and the loan product. On a $400,000 loan, buying down 0.5% (from 7.0% to 6.5%) might cost $2,000–$4,000.

The Math of Permanent Buydowns

Consider a $400,000 loan at 7.0% interest (360 monthly payments) versus the same loan at 6.5% with a 0.5% permanent buydown costing $3,000:

• At 7.0% (no buydown): Monthly payment is $2,661; total interest over 30 years is roughly $557,000.
• At 6.5% (with $3,000 buydown): Monthly payment is $2,387; total interest is roughly $459,000.
• Net savings: $2,661 − $2,387 = $274 per month, or about $98,640 over 30 years. Subtracting the $3,000 upfront cost, you net $95,640 in savings.

The break-even point—when your monthly savings exceed the upfront cost—occurs after roughly $3,000 ÷ $274 = 11 months. In this case, paying points makes immediate sense; your payback is fast.

But break-even timelines vary. If the buydown costs $5,000 and monthly savings are only $150, break-even is 33 months. If you sell or refinance within three years, that permanent buydown is a wash or a loss. Permanent buydowns make sense if you plan to keep the home (and the loan) for at least 5–7 years.

Temporary Buydowns: 2-1 and 3-2-1 Structures

Temporary buydowns are popular in hot real estate markets and builder promotions. Instead of a flat rate reduction, your rate starts lower and steps up each year until it reaches the full market rate.

The 2-1 Buydown

In a 2-1 buydown, your rate is reduced by 2% in year one, 1% in year two, and reaches the full market rate in year three.

If the market rate is 7.0%:

• Year 1: 5.0% (2% discount)
• Year 2: 6.0% (1% discount)
• Year 3–30: 7.0% (full rate)

Monthly payment in year 1 is much lower, easing initial affordability—crucial if you have rising income or expect a significant raise. In year three, your payment jumps; you must qualify and be prepared for that increase.

The 3-2-1 Buydown

A 3-2-1 buydown extends the discount over three years:

• Year 1: 4.0% (3% discount)
• Year 2: 5.0% (2% discount)
• Year 3: 6.0% (1% discount)
• Year 4–30: 7.0% (full rate)

Your initial payment is even lower, and the step-up is more gradual. This is popular with builders trying to qualify borrowers on lower-income qualification metrics.

Who Pays for the Buydown

The cost of a buydown (permanent or temporary) comes from somewhere:

Buyer-paid: You write a check at closing. This reduces your liquid cash but builds equity immediately and locks in savings.

Seller-paid: The seller contributes to your closing costs to buy down the rate. This is common in buyer-favorable markets and is a negotiation point alongside price. Sellers often offer seller concessions (up to 3–6% of purchase price for conventional loans, higher for FHA) to make your offer attractive.

Builder-paid: In new construction, the builder might offer a permanent or temporary buydown as a promotion, especially in competitive markets. This helps them sell homes when rates are high.

Lender-paid: Some lenders offer “lender credits” that cover closing costs or reduce your rate; these are reflected in a higher note rate. You do not pay upfront, but you accept a higher rate for the life of the loan—a hidden cost. This is typically used when you lack cash for closing or want to preserve liquidity.

Seller concessions are restricted on conventional loans; FHA and VA loans allow higher concessions. If rates are very high and you are stretched on down payment, a seller-paid temporary buydown can bridge the affordability gap.

When to Choose Permanent vs. Temporary

Choose permanent if:

• You plan to stay in the home 7+ years
• You have stable income and can afford the upfront cost
• You want to lock in certainty and avoid rate risk
• Break-even math shows you recover the cost within a reasonable hold period

Choose temporary (2-1 or 3-2-1) if:

• You expect income to rise significantly (promotion, bonus, spouse entering workforce)
• You may sell or refinance within 5 years
• The seller or builder is paying, so the upfront cost is not out of your pocket
• You value lower early payments to manage tight cash flow
• You want to “test drive” the home before committing to a higher payment forever

Temporary buydowns are also strategic in rising-rate markets. If you lock a 7.0% rate with a 3-2-1 buydown, you enjoy 4.0% in year 1 and have time to decide whether to refinance before the rate steps to 7.0% in year 4. Refinancing is only an option if rates fall; if they stay high or rise further, you absorb the full 7.0% rate as planned.

Buydowns and Refinancing

A permanent buydown can be refinanced. If you bought down 6.5% and rates drop to 5.5%, you can refinance to the new market rate. You start fresh; your original buydown is not recoverable, but the new lower rate may justify the refinancing costs.

Temporary buydowns complicate refinancing. If you are in year 2 of a 3-2-1 buydown at 5.0% rate, and you want to refinance, you will land at the current market rate, not the 4.0% year-1 rate. The temporary structure is gone once you refi.

Real-World Scenarios

Scenario 1: You have cash and plan to stay. Permanent buydown is rational. A $3,000–$5,000 upfront cost is recouped in 2–3 years through monthly savings; the remaining 27 years are pure gain.

Scenario 2: Seller in motivated market. A seller-paid temporary 3-2-1 buydown costs the seller (not you) $5,000–$8,000 but buys them a sale. You benefit from lower early payments and can refinance if rates fall by year 4.

Scenario 3: Builder promotion in high-rate environment. A builder-paid 2-1 buydown is essentially free marketing for them. You get 5.0% year 1 and 6.0% year 2 on a 7.0% market; your cash is unaffected. When rates drop (as they eventually do), you refinance out.

Scenario 4: You are cost-conscious and will move in 4 years. Permanent buydown is poor math. You spend $4,000 upfront, recover it in 2 years, then refinance away. A temporary 2-1 makes more sense; the cost is lower (or seller-paid), and you do not lose the buydown benefit when you refi.

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