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3-2-1 Buydown Calculator: Your Complete Guide to Temporary Rate Buydowns in 2026

Explore how temporary buydowns like 3-2-1 and 2-1 can reduce your mortgage payments in the early years, offering a strategic advantage in 2026's market.

MortgageMate
January 10, 2026
12 min read

Introduction

Mortgage rates in the 6% range have homebuyers and sellers looking for creative solutions. Enter the temporary buydown—a financing strategy that reduces your mortgage payments for the first few years of your loan.

Unlike permanent buydowns (discount points), temporary buydowns like the 3-2-1 and 2-1 don't change your actual interest rate. Instead, funds are placed in an escrow account to subsidize your payments during the early years. And here's the key difference: if you sell or refinance early, those unused funds come back to you.

With rate forecasts from Fannie Mae and MBA projecting rates between 5.9% and 6.5% through 2026, temporary buydowns offer an interesting arbitrage opportunity. You get lower payments now, and if rates drop enough to refinance, you may get your buydown funds back.

This guide breaks down exactly how 3-2-1 and 2-1 buydowns work, when each makes sense, and how to use our calculator to run your own numbers.

Refund Advantage

Unused escrow funds from temporary buydowns are refundable if you sell or refinance before the buydown period ends.

Key Takeaways

Temporary buydowns are funded by sellers, builders, or lenders—not you. It's essentially free payment relief.

Unused escrow funds are refundable if you sell or refinance early, unlike permanent discount points.

You must qualify at the full note rate—your Year 4 payment will be 40%+ higher than Year 1.

3-2-1 buydowns maximize savings but cost more; 2-1 buydowns are more affordable with moderate relief.

If rates drop, you can refinance, get your escrow refund back, AND lock in a lower long-term rate.

FactorTemporary (3-2-1, 2-1)Permanent (Points)
Duration1-3 yearsLife of loan
Who PaysSeller, builder, or lenderUsually buyer
RefundableYes – unused funds returnedNo – non-refundable
Rate ChangeEffective rate onlyActual rate reduced
QualificationMust qualify at full note rateQualify at reduced rate
Best ForShort-term owners, refi plansLong-term owners (7+ years)
Risk LevelLower (refundable)Higher (non-refundable)
1

Enter Your Loan Details

Input your loan amount, base interest rate (without buydown), and loan term. For example: $400,000 loan at 6.5% for 30 years.

2

Select Your Buydown Type

Choose between 3-2-1 buydown (3 years of reduced rates) or 2-1 buydown (2 years). The calculator will show you the rate reduction for each year.

3

Review Your Payment Schedule

See your exact monthly payment for each year, total savings over the buydown period, estimated buydown cost, and when your payment increases to the full rate.

Pros
Lower Initial Payments

Significantly reduced payments for the first 2-3 years—up to $1,100/month less in Year 1 on a 3-2-1 buydown.

Refundable Escrow Funds

Unlike permanent points, unused buydown funds are returned if you sell or refinance early.

Often Seller/Builder Funded

The cost is frequently covered by sellers or builders as a concession, meaning you pay nothing out of pocket.

Refinance Flexibility

If rates drop, you can refinance and get unused escrow funds back—a win-win scenario.

Cons
Payment Shock in Year 4

Your payment will increase 40%+ from Year 1 to Year 4. You must budget for this increase.

Must Qualify at Full Rate

Unlike permanent buydowns, you must qualify for the mortgage at the full note rate, not the reduced rate.

Primary Residence Only

Temporary buydowns are not available for investment properties or second homes.

Subject to Concession Limits

Seller contributions are capped (3-9% for conventional loans), which may limit buydown options.

Use our buydown calculator to see exactly what your payment schedule would look like with a 3-2-1 or 2-1 buydown.

Try the Buydown Calculator
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FAQ

Frequently Asked Questions

1

What is a temporary buydown?

A temporary buydown is a financing arrangement where funds are placed in escrow to reduce mortgage payments for a set period, typically 1 to 3 years.

2

Who pays for temporary buydowns?

Temporary buydowns must be funded by someone other than the buyer, typically sellers, builders, or lenders.

3

Are unused buydown funds refundable?

Yes, unused escrow funds from temporary buydowns are refundable if you sell or refinance before the buydown period ends.

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