Finance

2-1 Mortgage Rate Buydown Calculator

Find the reduced payments and total subsidy cost of a 2-1 temporary mortgage rate buydown.


2-1 Mortgage Rate Buydown Calculator

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A 2-1 buydown doesn’t change your loan’s actual rate — it uses an escrowed subsidy, often from the seller or builder, to temporarily cover part of the payment for the first two years.

How it works

Standard loan amortization gives the payment at each of three rates: the permanent rate (year 3+), permanent-minus-1% (year 2), and permanent-minus-2% (year 1). The total buydown cost is the sum of the payment differences across both reduced years, times 12 months each.

What this does not include

This does not include the borrower’s actual qualification requirements — many lenders still qualify the borrower at the permanent (higher) rate rather than the temporarily reduced year-1 rate, meaning the buydown eases cash flow but doesn’t necessarily ease approval.

How to use this calculator

  1. Enter the loan amount, permanent note rate, and loan term.

Frequently asked questions

Who typically pays for a 2-1 buydown?

Often the seller or builder, as a concession to make the home more attractive in a slower market, though buyers can also fund it themselves.

What happens to unused buydown funds if the loan is refinanced or paid off early?

Depending on the program, remaining escrowed funds may be applied to the principal balance or, in some cases, returned to whoever funded the buydown — terms vary by lender and program.

Is a 2-1 buydown the same as paying discount points?

No — discount points permanently reduce the note rate for the life of the loan; a 2-1 buydown temporarily reduces the *effective payment* for two years while the actual note rate never changes.

Important: This is general information, not financial advice. Figures are estimates, and your lender or provider decides the real numbers. Check with a qualified adviser before acting on them.

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Written by

M. Whitfield

Personal finance writer

M. Whitfield writes the personal finance calculators, covering loans, mortgages, savings, tax and investment maths. The focus is on showing exactly which number goes into a formula and which assumptions a result depends on, so readers can tell when a figure applies to their situation and when it does not. Every finance page states what it does not account for as plainly as what it does.

Reviewed by

A. Whitfield-Reyes

Calculator reviewer — finance

A. Whitfield-Reyes reviews the finance calculators, checking compounding conventions, rate-period alignment, and whether each page is explicit about the costs and tax treatment it leaves out. Financial results are easy to state with false precision, so review focuses on whether the page makes its assumptions visible to a reader who is not looking for them.

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