Temporary Rate Buydown Calculator — OptionOne
Temporary Rate Buydown Calculator

Compare 2-1 & 3-2-1 Buydowns.

Compare seller-funded 2-1 and 3-2-1 temporary rate buydowns (Principal & Interest only). Model reduced early-year payments and seller concession requirements.

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2-1 Buydown

2-Year Rate Reduction
Year 1 Payment (4.00% Effective Rate)
$6,683.81 /mo
Monthly subsidy: $1,709.89/mo ($20,518.72 in Year 1)
Year 1 4.00%
$6,683.81/mo (-$1,709.89)
Year 2 5.00%
$7,515.50/mo (-$878.20)
Years 3–30 6.00%
$8,393.71/mo
Seller Cost ($) 1.55% of Purchase Price
$31,057.17

3-2-1 Buydown

3-Year Rate Reduction
Year 1 Payment (3.00% Effective Rate)
$5,902.46 /mo
Monthly subsidy: $2,491.25/mo ($29,895.01 in Year 1)
Year 1 3.00%
$5,902.46/mo (-$2,491.25)
Year 2 4.00%
$6,683.81/mo (-$1,709.89)
Year 3 5.00%
$7,515.50/mo (-$878.20)
Years 4–30 6.00%
$8,393.71/mo
Seller Cost ($) 3.05% of Purchase Price
$60,952.18

Program Comparison Summary

Monthly Principal & Interest payment progression and total seller funding requirement

Program Year 1 P&I ($/mo) Year 2 P&I ($/mo) Year 3 P&I ($/mo) Full P&I ($/mo) Seller Cost ($)
2-1 Buydown $6,683.81 $7,515.50 $8,393.71 $8,393.71 $31,057.17
3-2-1 Buydown $5,902.46 $6,683.81 $7,515.50 $8,393.71 $60,952.18

Annual Payment Structure & Seller Funding

Year-by-year effective interest rates, monthly P&I, and monthly/annual subsidy schedule

Program Year Effective Rate (%) Full Note P&I ($/mo) Buydown P&I ($/mo) Monthly Subsidy ($) Annual Subsidy ($)

Notes & Assumptions

  • Buydown subsidy = (contractual monthly P&I − reduced monthly P&I) × 12 per subsidized year.
  • Illustrative fixed-rate fully amortizing loan; temporary buydown changes borrower payment, not note rate.
  • Taxes, insurance, HOA, closing costs and any administrative buydown fees are excluded.
  • Jumbo lender/investor approval, seller concession limits, underwriting and program eligibility must be verified.
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