Buying down your interest rate—also known as a mortgage rate buydown—is a strategy home buyers use to lower their mortgage interest rate by paying an upfront fee at closing. In exchange for this upfront cost, the lender reduces the interest rate on the loan, which lowers your monthly mortgage payment and can significantly reduce total interest paid over the life of the loan.
For many buyers, especially in higher interest rate environments, buying down the rate can mean saving thousands of dollars over 15–30 years.
How Does Buying Down Your Interest Rate Work?
When you apply for a mortgage, your interest rate is based on several factors, including:
- Credit score
- Income and debt-to-income ratio
- Loan amount and down payment
- Loan type (conventional, FHA, VA, etc.)
- Current mortgage market conditions
If rates are high (or your financial profile places you in a higher pricing tier), your lender may offer you the option to buy discount points to reduce your rate.
What Are Mortgage Discount Points?
Mortgage discount points are prepaid interest. You pay a one-time fee at closing, and in return, your lender lowers your interest rate.
- 1 point typically costs 1% of the loan amount
- Each point often lowers the interest rate by about 0.25% (varies by lender and market)
Example: On a $500,000 mortgage, 1 point usually costs $5,000. If that point lowers the rate by roughly 0.25%, it can reduce your monthly payment and long-term interest costs.
What Does It Cost to Buy Down Your Rate?
The cost depends on loan size, market conditions, and lender pricing. As a general rule:
Each discount point costs about 1% of the loan amount.
One mortgage discount point typically costs 1% of the loan amount and can reduce your interest rate by approximately 0.25%.
Examples:
- $300,000 loan → 1 point = $3,000
- $750,000 loan → 1 point = $7,500
Your lender can provide a breakdown showing the monthly savings and how long it may take to break even on the upfront cost.
Can a Buyer Commission Rebate Be Used to Buy Down Your Interest Rate?
In many cases, yes. One way savvy home buyers reduce out-of-pocket costs is by using a buyer commission rebate to help pay for a rate buydown.
With a buyer commission rebate, the buyer receives a portion of the buyer agent’s commission back at closing. That rebate can often be applied toward:
- Closing costs
- Discount points
- Buying down the mortgage interest rate
Instead of paying out-of-pocket for discount points, buyers can use rebate funds to lower their interest rate—reducing their monthly payment without needing additional upfront cash. Always confirm with your lender regarding specific guidelines.
Is Buying Down Your Interest Rate a Good Idea?
Buying down your interest rate is not the right choice for everyone. It often makes sense if you plan to keep the home long enough to reach the break-even point—when your monthly savings exceed the upfront cost.
It may be a good fit if:
- You plan to stay in the home long term
- You want a lower monthly payment
- You have funds available (or a rebate) to pay discount points
- Mortgage rates are higher than you’d like
It may not make sense if:
- You plan to sell or refinance in the near future
- The break-even period is longer than your expected time in the home
- You need cash for reserves, repairs, or other priorities
Before deciding, ask your lender for a cost vs. savings breakdown so you can estimate your break-even timeline.
Final Thoughts: Is a Mortgage Rate Buydown Worth It?
A mortgage rate buydown can be a powerful strategy to reduce your monthly payment and lower the total interest paid over time. However, whether it makes sense depends on your budget, how long you plan to keep the home, and current market conditions.
For many buyers, combining a mortgage rate buydown with a buyer commission rebate can be one of the smartest ways to reduce both upfront and long-term housing costs.
Frequently Asked Questions About Buying Down Your Interest Rate
What does it mean to buy down your interest rate?
Buying down your interest rate means paying upfront discount points at closing to reduce your mortgage interest rate. In return, your lender lowers your rate, which can lower your monthly payment and reduce total interest paid over the life of the loan.
How much does it cost to buy down your interest rate?
Each discount point typically costs 1% of the loan amount. For example, on a $400,000 loan, 1 point costs $4,000. Points often reduce the rate by about 0.25%, but exact pricing varies by lender and market conditions.
Is buying down your interest rate worth it?
Buying down your interest rate can be worth it if you plan to stay in the home long enough to reach the break-even point—when the monthly savings exceed the upfront cost. It often benefits long-term homeowners but may not make sense if you plan to sell or refinance soon.
How do you calculate the break-even point on a rate buydown?
To calculate break-even, divide the cost of discount points by the monthly payment savings.
Example: If points cost $6,000 and you save $200 per month, the break-even is 30 months ($6,000 ÷ $200 = 30).
Can you use a buyer commission rebate to buy down your interest rate?
In many cases, yes. A buyer commission rebate received at closing can often be applied toward discount points or closing costs, which may allow buyers to buy down their interest rate without additional out-of-pocket expense. Always confirm with your lender regarding specific guidelines.
Is buying down your rate better than making a larger down payment?
It depends on your goals. A larger down payment reduces your loan balance and may eliminate PMI, while buying down your rate reduces your interest rate and monthly payment. In some situations, using available funds (or a rebate) to buy down the rate can provide greater long-term savings than a small increase in down payment.