Rate buydowns explained for Charleston buyers

Rob Redziniak

3 days ago

4 min read

House keys held in front of a Lowcountry home

A rate buydown lowers your mortgage rate by paying money up front. A permanent buydown lowers the rate for the life of the loan. A temporary buydown lowers it for the first year or two, then it returns to the full rate. Ask what it costs, who pays, and how long you plan to keep the loan.

Tell me what you are looking for and I will help you narrow it down. Start with the buyer consultation form.

Permanent buydown: paying points

Discount points are a fee paid to the lender at closing in exchange for a lower rate for the whole loan. The VA notes that your lender determines the interest rate and discount points, and that buyers and sellers can negotiate who pays certain closing costs, including loan discount points (see VA funding fee and closing costs, checked October 21, 2026). The point is simple. You pay cash now to save money each month later.

Temporary buydown

A temporary buydown lowers your rate for a set period, often the first one or two years, using funds placed in an account at closing. A builder, a seller or sometimes a buyer pays for it. After the period ends, your payment rises to the amount based on the full note rate. You need to be able to afford that full payment, and lenders usually qualify you with that in mind. Ask your lender exactly how it will qualify you.

Why builders often offer them

In my September 2026 market update I noted that some builders were offering rates in the 4% to 5% range along with warranties, closing-cost help and appliances. Those offers change often and depend on using a builder's preferred lender, on the specific home and on timing. Read the contract terms, ask for the details in writing, and compare them against a quote from an outside lender. I explain more in how new construction supply shapes the resale market.

How to decide if a buydown fits

How long do you expect to keep this loan? If you may sell or refinance within a few years, a costly permanent buydown may not pay back.
What does it cost, in dollars, and what does it save per month? Divide the cost by the monthly savings to see how many months it takes to break even.
Would the same money do more as a larger down payment, cash reserves or repairs?
Who is paying for it, and does taking it change the price or other terms of the deal?
What happens to your payment when a temporary buydown ends?

Questions to ask a lender or builder

Is this a temporary or permanent buydown?
What is the full note rate and the payment when it ends?
Is the offer tied to using your lender, and what are that lender's fees?
Can I get the offer in writing before I sign?
If I do not use the buydown, can I get a lower price or closing credit instead?

What I watch for

I am wary of an offer that makes the payment look low but hides a higher price or higher fees. I help you compare the full picture: price, rate, fees, incentives and what you are signing. Buydowns can be useful tools and they can also be marketing. The numbers decide which.

A worked example with invented numbers

These numbers are made up to show how to test a buydown. One point generally costs 1 percent of the loan, so on a $400,000 loan that is $4,000. Suppose paying it lowers the rate from 7.0 to 6.75 percent. The payment falls from about $2,661 to about $2,594, a saving of roughly $67 a month. Dividing $4,000 by $67 gives about 60 months, or five years, to earn the cost back. If you expect to keep the loan longer, it may pay. If you may move or refinance sooner, it may not. Your lender provides the real prices.

A short checklist before you accept a buydown

Get the cost of the buydown in writing, and who is paying for it.
Ask what the payment is in each year of a temporary buydown.
Ask whether the rate after the temporary period is fixed.
Ask whether you must qualify at the higher payment.
Compare the buydown with other uses of the same money, such as a lower price or closing cost help.

My take: [ROB INPUT: add one or two sentences of your own view before this is published.]

Frequently asked questions

Is a buydown the same as a lower rate?

A permanent buydown gets you a lower rate for the loan's life, at a cost up front. A temporary one lowers the rate only for a period.

Can a seller pay for my buydown?

Often yes, if the loan type and the contract allow it. Rules and limits depend on the loan, so ask your lender.

Should I take a builder incentive?

Compare it with the best outside offer on the same home. I will help you line them up.

Sources, checked October 21, 2026

Where to go next

Keep reading: how mortgage rates are set, should I wait for rates to drop, new construction and resale. Browse all posts in Market and rates.