2-1 Buydown Calculator
See your reduced payments for the first two years of a 2-1 buydown and what the buydown costs to fund.
By Onias Derilus, Mortgage Capital · NMLS# 1859012 · Last Updated: June 2026
Payment by Year (2-1 Buydown)
The buydown cost is the total payment relief over the first two years. It is usually paid as a credit from the seller or builder at closing. Estimate only.
A 2-1 buydown drops your interest rate by 2 percent in the first year and 1 percent in the second year, then settles at the full note rate from year three on. It is a way to ease into the payment.
The relief is prepaid up front, usually by a seller or builder credit at closing, and held in an escrow account that covers the gap each month. It is not a permanent rate cut.
These figures are estimates. For neutral, official guidance on mortgage costs and what lenders can charge, see the CFPB's Owning a Home guide.
How to Use This Calculator
- 1
Enter your loan amount, note rate, and term.
- 2
Review the lower year 1 and year 2 payments.
- 3
Check the full payment that kicks in from year three.
- 4
Look at the total buydown cost to see what a seller credit would need to cover.
The Formula & Assumptions
Year 1 rate = note rate − 2%
Year 2 rate = note rate − 1%
Year 3+ = full note rate
Cost = (full − year 1) × 12
+ (full − year 2) × 12
Each yearly payment uses the standard amortized principal-and-interest formula at the reduced rate, while the loan balance still amortizes at the note rate.
The buydown cost is the sum of the monthly payment gaps across the first 24 months, which is what the escrow account must hold to subsidize your lower payments.
You still qualify at the full note rate, so the buydown lowers your payment, not your approval amount.
Frequently Asked Questions
Who pays for a 2-1 buydown?
Most often the seller or builder funds it as a closing credit, which makes it a popular concession in slower markets. A buyer or lender can also pay, but the appeal is usually that someone else covers the cost.
Do I qualify at the lower rate?
No. You still have to qualify at the full note rate. The buydown only reduces your actual payment in the first two years, so it lowers your cash outlay, not the income you need to be approved.
What happens to the buydown if I refinance early?
Any unused buydown funds in escrow are typically applied to your loan balance or returned per the lender agreement. If you refinance before the two years end, you do not lose the remaining subsidy.
Is a 2-1 buydown better than a permanent rate buydown?
It depends on how long you plan to keep the loan and the rate outlook. A 2-1 buydown helps most if you expect to refinance or your income to rise, while paying points for a permanent lower rate helps if you keep the loan long term.
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Rates are illustrative only. APR and payments vary by credit score, loan amount, and market conditions. Subject to credit approval. Not a commitment to lend. NMLS# 1859012. Equal Housing Lender.
It calculates a temporary rate buydown: two percentage points below the note rate in year one, one point below in year two, then the full rate after that. It also totals what the buydown costs.
2-1 Buydown Calculator in Florida
Florida builders used 2-1 buydowns heavily through the recent rate cycle, particularly on new construction around Orlando, Tampa, and the Space Coast. They are a concession, so treat them as negotiable. On a resale, a seller-funded buydown often costs the seller less than an equivalent price cut and is worth more to the buyer.
How the 2-1 Buydown Calculator Works
The calculator builds three payment figures, one for each of the first two years and one for the permanent rate. The cost is the total difference between the reduced payments and the full payment, held in escrow.
The 2-1 Buydown Formula, Explained
Buydown cost = sum of (full payment − reduced payment) across the first 24 months
The note rate never changes. The buydown is a pot of money, usually funded by the seller or builder, that covers part of each payment for two years.
You qualify at the full note rate rather than the reduced one. A buydown eases the first two years of cash flow, but it does not make a payment affordable that you could not otherwise carry.
The Complete 2-1 Buydown Calculator Guide
A 2-1 buydown is a bridge, not a discount. It lowers the first two years of payments and then leaves you on the note rate for the remaining twenty-eight.
That makes it most useful when you expect your situation to improve or rates to fall. If you refinance during the buydown period, the lender generally credits unused escrow back rather than keeping it.
Compare it against the price reduction it replaces. Ten thousand dollars off the price lowers the payment for the whole loan, while ten thousand in buydown escrow lowers it hard for two years and not at all afterwards.
2-1 Buydown Calculator FAQ
Do I qualify at the lower rate?
No. Lenders qualify you at the full note rate, so the buydown improves your early cash flow rather than your approval odds.
What happens if I refinance during the buydown?
Lenders usually apply the unused escrow to your payoff rather than keeping it. Confirm the handling with your lender before you commit.