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Adjusting buydown economics if mortgage rate volatility persists into Q2 (M/I Homes perspective)

Mortgage-rate volatility affects (1) the “buy rate” cost of incentives you offer and (2) how much incentive you must spend to protect sales pace and margin. In M/I Homes’ Q1 discussion, management explicitly ties incentive strategy to mortgage-rate movement and acknowledges persistent volatility. Specifically, they note they operate in a “minute to minute news cycle” and that 10-year rates have moved “between 440 and the low 420s,” with costs rising when rates go up on the day they buy the instrument/lock. They also state they review this daily and employ mortgage interest rate buydowns to balance sales pace and margins. ¹

1) Keep the “core product” lead, but tighten buydown targeting when rates swing

M/I Homes reports that the “vast, vast majority” of buyers want a 30-year fixed rate, and their most consistent strategy has been a rate offer on inventory homes and long-term rate locks on to-be-builts. ¹

If volatility persists into Q2, the first adjustment is to avoid broad incentive expansion and instead keep the product “anchored” (30-year fixed preference) while scaling incentives only where they change conversion risk.

Evidence of why this works for them:

• Their rate buy-down programs are not uniform; they are managed “on a subdivision-by-subdivision basis” and can be applicable only to certain lots in certain communities. ²
• They balance this against pace and the effective difficulty of longer-term buy-downs: when buy-downs extend longer, the “effective rate buydown” becomes harder, so incentives must be balanced with achievable economics. ³

So the buydown economics adjustment under volatility:

• Treat volatility as a reason to re-price incentives by community/lot, not necessarily a reason to increase them everywhere. ²³
• Maintain the inventory and to-be-built structures that already match buyer demand: inventory programs and long-term rate lock options on to-be-builts where they’ve found it works. ¹

2) Model buydown cost as “rate-sensitive and day-sensitive” (not static)

Management’s commentary indicates that when mortgage rates rise, it “costs us a little more” because the company is buying/hedging/locking based on the market at that time, and they emphasize daily monitoring (“We look at it…every day.”). ¹

Implication for Q2 buydown economics:

• Convert your buydown plan from a fixed budget per month into a variable cost schedule tied to the expected distribution of rate moves in Q2.
• Use the company’s own volatility framing as a guide: they describe 10-year movement in a meaningful range (“between 440 and the low 420s”). ¹

Even though the excerpts don’t provide a specific formula for “buoydown points per 10-year basis point,” they do establish the directional rule: higher market rates increase buydown cost for the same incentive outcome. ¹

3) Protect margin by keeping to the spec vs. to-be-built mix discipline

M/I Homes indicates that buy-down economics interact with their internal margin structure between specs and to-be-builts:

• Historically, there was margin erosion between specs and to-be-built (100–200 bps commonly; sometimes 300–500 bps) and they’ve aimed to generate more to-be-built sales. ⁴
• Over time they also became more “heavily focused on rate buy-downs for to-be-builts as well because they do generate higher margins.” ⁴

Implication for Q2 under volatility:
If volatility forces you to spend more on incentives to hold sales pace, you should prioritize incentives on the product types that best defend margin:

• Incentivize to-be-built more aggressively (where feasible) because management states these generate higher margins and they’ve used buy-downs to support that higher-margin channel. ⁴
• Keep spec levels/inventory management “on a subdivision-by-subdivision basis” and avoid over-expanding specs if that would increase reliance on lower-margin economics. ³²

4) Expect potential carryforward effects from Q1 incentive intensity

A key analyst question on the call asks whether March volatility required increased incentives and whether there’s potential carryforward to Q2 margins due to incentives provided. ⁵
While management did not provide a quantified carryforward in the excerpts, the setup matters: the business is actively adjusting incentives to offset mortgage-rate volatility, and investors are explicitly looking for timing effects in margin. ⁵¹

Practical economic adjustment under persistent volatility:

• Assume some portion of Q2’s margin pressure (or recovery) will reflect how much incentive intensity was used during higher-rate days in Q1 and early Q2, because M/I Homes indicates they manage incentives in response to moving mortgage rates. ¹⁵

5) Use capacity/pace levers (inventory, cycle time) so buydowns don’t do all the work

M/I Homes ties sales execution to construction/inventory dynamics:

• They say reduced cycle time helps spec levels and closings (“Reduced cycle time has helped. It doesn't take us as long to get houses built…”). ³
• They also emphasize closings pacing uncertainty because “half of our closings got sold and closed in the quarter,” making average sale price and margins hard to predict. ⁶

Implication:
To keep buydown economics from deteriorating, you want incentives to be the supporting lever rather than the sole lever. Under persistent volatility, tighten:

• Inventory readiness and cycle time execution (to reduce reliance on expensive incentives for pace). ³
• Community-level spec investment discipline (so incentives are not masking execution shortfalls). ³

Bottom line

If mortgage-rate volatility persists into Q2, M/I Homes’ most defensible adjustment to buydown economics is to keep the core “buyer-preferred” 30-year fixed mortgage focus, but re-time and re-target incentive intensity daily/continuously based on rate moves, while prioritizing communities/products and lots where buy-downs can most effectively protect conversion without sacrificing margin. ¹²⁴³

This approach is consistent with how management already describes their operating framework: daily rate monitoring due to cost changes, subdivision/lot-level buydown targeting, and using the higher-margin to-be-built channel more when offering buy-downs. ¹²⁴