A temporary buydown subsidizes payments for a defined period; discount points may secure a lower note rate for the loan. Compare the permanent payment, upfront cost, and actual time you expect to keep the mortgage. A lower introductory payment does not establish affordability.
Read the permanent terms first
Start with the note rate, amortization term, and full principal-and-interest payment. Add taxes, insurance, HOA dues, and any mortgage insurance. A temporary subsidy does not remove those obligations or change a fixed note into a permanently lower-rate loan.
For Fannie Mae temporary buydowns, qualification is based on the note rate rather than the subsidized rate. Other programs require their own review. Do not build the household budget around an assumed future income increase or refinance.
Ask where the subsidy money comes from
Get the written buydown agreement, funding source, dollar amount, subsidy schedule, and handling of unused funds after an early payoff. Seller-funded assistance can count toward applicable contribution limits. The agreement matters more than a marketing label such as a 2-1 buydown.
There can also be choices among the same seller credit used for eligible costs or a different financing structure. The seller credit versus price reduction comparison helps organize those alternatives.
Evaluate permanent points separately
Points exchange an upfront charge for different rate pricing. Request a points option and a no-points option from the lender on otherwise consistent assumptions. There is no universal amount by which one point reduces the rate.
The quote-comparison guide explains why rates, credits, and cash to close belong on the same worksheet. Consider the expected holding period and remaining debt, not just the monthly reduction.
Do not turn a subsidy into a forecast
A temporary reduction can provide transition cash flow for an otherwise affordable purchase. It is weaker as a plan when the full payment would be unmanageable once support ends. Test the permanent payment before deciding how to allocate the concession.
Compare fixed-rate financing with the actual alternative being offered. An ARM has different rate-change risks; it is not simply another temporary buydown.
Separate subsidy arithmetic from rate pricing
If an illustrative agreement contributes $600 per month for 12 months and $300 per month for the next 12, total scheduled subsidy is $10,800. That is a hypothetical payment subsidy, not a quote for a standard 2-1 buydown. Separately, $4,000 of permanent points for an assumed $80 monthly P&I reduction has a simple 50-month cash-flow break-even. That screen omits balance differences and opportunity cost.
Bring these details to a review
- Full permanent payment and the payment during every subsidized period.
- Written funding and unused-balance terms.
- Actual permanent-points pricing and likely holding period.
Common questions
Can I count on refinancing before the subsidy ends?
No. Future rates, home value, credit, and eligibility may change.
Does the points calculator model a temporary buydown?
The points calculator compares permanent pricing assumptions. The full temporary buydown calculator above separately models the subsidy and an equal-cost price reduction.
Continue with the relevant guides
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Sources checked October 28, 2026. Agency rules and a lender’s own product descriptions are different sources; lender examples do not establish availability through Aaron. Examples are original hypothetical illustrations, not client results. Actual eligibility, pricing, costs, and terms require review.