2-1 Temporary Rate Buydown Calculator
A 2-1 buydown lowers your mortgage rate by 2 points in year 1 and 1 point in year 2 — then returns to the note rate. The seller (or lender) prepays the rate difference into an escrow account.
| Note rate | — |
| Year 1 effective rate (note - 2.00%) | — |
| Year 2 effective rate (note - 1.00%) | — |
| Year 1 monthly principal & interest | — |
| Year 2 monthly principal & interest | — |
| Year 3+ monthly principal & interest | — |
| Total buydown cost (paid upfront) | — |
| Year 1 savings vs note rate | — |
| Year 2 savings vs note rate | — |
A 2-1 temporary buydown is the most common seller-concession mortgage product of 2025-2026. The seller (or builder, or sometimes lender) deposits funds in escrow that subsidize your interest rate by 2.00% in year 1 and 1.00% in year 2 — then your payment jumps to the full note rate from year 3 onward. This calculator quantifies the upfront cost, monthly savings during the buydown period, and shows exactly what your future payment will look like.
When 2-1 Buydowns Make Sense
2-1 buydowns shine in two scenarios. First, buyers with rising income who expect a meaningful raise within 2 years can comfortably handle the year-3 payment jump. Second, in a high-rate environment where you expect refinancing within 18-24 months, the buydown bridges the affordability gap until rates drop. Sellers love offering 2-1 buydowns instead of price reductions because the dollar cost is typically lower than a $10-20K price cut, but the monthly savings impact on buyers can be much larger.
Risks and Watch-Outs
A 2-1 buydown does NOT reduce your loan balance or note rate — it only subsidizes the first 24 months. If you cannot afford the year-3 payment, you must refinance, sell, or default. Lenders qualify you at the FULL note rate, not the buydown rate, so this isn't an end-run around DTI limits. If you refinance before year 3, the unused escrow funds are typically returned to whoever paid for the buydown (seller-funded = credit at payoff; lender-funded = principal reduction). Always confirm the refund treatment in your loan estimate before signing.
2-1 Buydown vs Permanent Rate Buydown (Points)
Permanent rate buydown (discount points) costs roughly 1% of the loan amount per 0.25% rate reduction and lasts the full 30-year term. A 2-1 temporary buydown usually costs less upfront but only lasts 2 years. For homeowners staying long-term, permanent buydown wins on lifetime cost. For short-term holders or those refinancing soon, 2-1 buydown wins. See our discount points ROI calculator for the permanent buydown break-even.
Last updated May 2026. Sources: CFPB Owning a Home.