Mortgage calculators
Temporary Buydown Calculator
Compare your payments during a temporary buydown, estimate the subsidy needed, and see the full payment when the buydown ends.
The starting example uses an illustrative 7.5% interest rate. This is not a NewFed rate quote. Enter your quoted note rate and loan details for your comparison.
Loan details
Your buydown comparison
Calculate your buydown to see each payment stage and the estimated subsidy funding.
Year 1 P&I
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Borrower's monthly portionFull P&I payment
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Required by the mortgage noteEstimated subsidy
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Funding for the temporary periodPayment schedule
| Period | Payment rate* | Monthly P&I | Monthly total | Monthly relief |
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*The payment-calculation rate illustrates the lower borrower payment. The actual note rate stays the same. P&I means principal and interest.
Subsidy funding by year
Additional monthly costs
Annual tax and insurance inputs are divided by 12 and rounded to cents. These estimates are held constant throughout the comparison.
Funding is calculated from the monthly payments rounded to cents, then summed across the buydown months. Your final funding amount follows the lender's buydown agreement and rounding convention.
How a temporary buydown works
Lower payments at the start
A 2-1 schedule calculates the borrower's payment using a rate two percentage points below the note rate in year 1 and one point below in year 2. A 1-0 schedule lasts one year; a 3-2-1 schedule lasts three.
The subsidy covers the difference
Funds set aside for the buydown supplement your payment so the full contractual principal-and-interest payment reaches the loan. This does not change the loan's note rate or original amortization.
Plan for the full payment
The temporary assistance ends after the selected period. Budget for the full payment shown in your results. Taxes, insurance and other property costs can also change over time.
Explore your buydown options
Connect with a NewFed loan officer to discuss availability, funding and a payment estimate for your situation.
Calculator assumptions and disclosures
This tool provides educational estimates for fixed-rate, fully amortizing loans. It is not a rate quote, loan approval or commitment to lend. Example rates are not current NewFed pricing. Availability, contribution limits, funding sources and loan terms vary by program and lender requirements.
The reduced borrower payments use the original loan amount and original amortization term. The loan's actual note rate and contractual principal-and-interest payment remain unchanged. Qualification requirements are based on the applicable program; for conventional loans subject to Fannie Mae's temporary buydown rules, qualification uses the note rate without the temporary reduction.
The subsidy estimate is the sum of the differences between monthly principal-and-interest payments rounded to cents. Optional property costs do not reduce the subsidy and are held constant for this illustration. This calculator does not model adjustable rates, interest-only payments, extra principal payments, early payoff, refinancing, or disposition of unused subsidy funds. Final figures and treatment of unused funds are governed by your loan and buydown agreement.
Learn more: Fannie Mae's temporary buydown overview. NewFed Mortgage Corp. NMLS #1881. Equal Housing Lender.