Financing a Home Resource Center Financing a Home

What Is a Mortgage Interest Rate Buydown?

Published 2026-09-09 Last reviewed 2026-09-09 By Lisa C Hamilton, REALTOR®

Quick Answer

A mortgage rate buydown uses funds paid upfront to reduce the borrower's mortgage interest cost according to the specific financing structure. A buydown may be temporary, reducing the effective payment during an initial period, or permanent, generally involving points or similar upfront cost to obtain a lower note rate for the loan. These are very different strategies.

What Is a Temporary Buydown?

A temporary buydown can reduce the borrower's effective payment during the first years of the loan through funds placed into the applicable buydown arrangement.

One commonly discussed structure is a 2-1 buydown.

Conceptually, the effective payment may be calculated at a rate two percentage points below the note rate during the first year and one percentage point below during the second year before reaching the full note-rate payment afterward.

Exact structures depend on lender/program rules.

Important: Your Note Rate Is Not Necessarily Lower

This is where buyers get confused.

A temporary buydown does not necessarily mean the contractual mortgage rate itself permanently changes.

The temporary subsidy helps cover part of the scheduled payment during the buydown period.

What Is a Permanent Buydown?

A permanent buydown generally involves paying additional upfront cost, commonly through discount points, to obtain a lower interest rate for the mortgage.

Because the reduction can apply over the loan's life, the economics depend heavily on how long you keep that mortgage.

See our guide to mortgage points for the break-even math.

Why Would a Seller Pay for a Buydown?

A seller might prefer offering a concession rather than reducing the price by the same headline amount.

For a buyer, using negotiated seller funds toward an eligible rate buydown can potentially affect the monthly payment more meaningfully than a modest price reduction.

But the lender must confirm what is permitted.

Example: Price Reduction vs. Financing Incentive

Suppose a seller is willing to give up $10,000 economically.

Option A: Reduce purchase price by $10,000.

Option B: Contribute an allowable amount toward buyer closing costs/rate strategy.

The monthly effect can differ dramatically.

That is why buyers should not automatically negotiate only on price.

Builder Buydowns

New-home builders sometimes advertise attractive financing incentives through affiliated or preferred lenders.

Always compare:

  • Home price
  • Rate
  • Duration
  • Points
  • Closing costs
  • Incentives
  • Alternative lenders
  • Whether incentive requires preferred lender/title/other services where lawful

A low advertised rate can have conditions. Read about builder incentives before you assume the deal.

The Most Important Temporary Buydown Question

Can I comfortably afford the FULL payment when the subsidy ends?

Do not qualify your lifestyle around Year One if Year Three is the real long-term payment.

How Lisa Helps

This is where real estate negotiation and financing intersect.

Lisa can communicate with your lender to understand which seller concessions would actually benefit you and then negotiate the real estate terms accordingly.

The lender determines whether the buydown structure is available and permitted.

Frequently Asked Questions

Does a 2-1 buydown mean I have a two-percent lower mortgage forever?

No.

Can the seller pay for a buydown?

Potentially, subject to loan rules and negotiation.

Are builder buydowns always a good deal?

No. Compare the entire transaction.

Is a permanent buydown the same as discount points?

Permanent rate reductions are commonly associated with paying discount points, although actual lender pricing should be reviewed.

Is a 2-1 buydown permanent?

No. A 2-1 buydown is a temporary payment-subsidy structure with a limited initial period.

Does buying down the rate always make sense?

No. It depends on the cost, how long you keep the loan, whether you might refinance and how the same money could be used elsewhere.

Lisa C Hamilton, REALTOR® with THE Brokerage, A Real Estate Firm®

Reviewed by

Lisa C Hamilton, REALTOR®, NV License S.168195

Lisa C Hamilton is a Las Vegas Valley REALTOR® affiliated with THE Brokerage, A Real Estate Firm®, helping buyers, sellers, investors, and relocating clients across Clark County and Greater Las Vegas with local market knowledge, property research, and direct personal representation. She is a REALTOR®: she handles the real estate side of your transaction. Individualized mortgage advice comes from an appropriately licensed lender.

Make sure the buydown actually helps your offer.

Lisa communicates with your lender to understand which seller concessions would actually benefit you, then negotiates the real estate terms accordingly.

Mortgage qualification, rates, loan amounts, and program eligibility are determined by your lender and current program rules, not by Lisa. Always verify current figures with an appropriately licensed mortgage professional and the applicable agency (HUD/FHA, VA, USDA, Fannie Mae, Freddie Mac, or the CFPB).