How LBO models actually get built and judged at LMM PE shops and by independent sponsors.
Lower-middle-market (LMM) deals — generally $2M to $25M of EBITDA — get modeled the same way a mega-fund deal does in structure, but the inputs and the scrutiny are different. Nobody is modeling a synergy waterfall across three business units. You're modeling whether a $6M EBITDA HVAC roll-up can service debt through a slow winter.
The core structure every LMM model needs
- Sources & uses. Purchase price, fees, and any transaction costs on the uses side; senior debt, seller note, rollover equity, and sponsor equity on the sources side. In LMM deals, seller notes (5–20% of purchase price, often at 6–8% interest, frequently subordinated and interest-only for a period) and earnouts show up far more often than in larger deals — model them as real debt-like instruments, not a footnote.
- Three-statement operating model. Revenue build by segment/customer concentration where possible, opex, and a working-capital schedule that actually reflects the business — a distribution company's model lives or dies on the inventory and receivables assumptions, not the income statement.
- Debt schedule. Senior term loan (often SBA 7(a) up to $5M, or conventional bank debt above that), revolver draws for seasonality, and the seller note — each with its own amortization, rate, and covenant set. Cash sweeps matter more here than at a mega-fund: LMM sponsors typically lean on debt paydown, not multiple expansion, for a meaningful chunk of returns.
- Returns. IRR and MOIC over a 3–7 year hold, with a base/upside/downside case. Because leverage is thinner and cheaper capital scarcer than at the top of the market, sponsor equity checks in LMM deals often run 35–50% of the capital stack (versus 30–40%+ at larger deals with deeper debt markets) — don't import a mega-fund leverage assumption into a $4M EBITDA deal.
What makes LMM modeling different in practice
- Add-backs deserve real skepticism. Seller-reported "adjusted EBITDA" in a founder-owned business routinely includes personal expenses run through the company, one-time items that recur every year, and above-market or below-market owner compensation that needs to be normalized to a real replacement-manager salary. A quality-of-earnings (QoE) report exists specifically to pressure-test this — build your model to flex easily once QoE findings come back, because they will move the number.
- Customer concentration is a model input, not a footnote. If one customer is 30% of revenue, run a scenario where that customer leaves in year 2 and see what it does to debt service coverage — lenders will ask this question before you do.
- Management transition cost is real and often under-modeled. Independent sponsors and search funds frequently step into the CEO seat themselves; searchers should model their own compensation and a realistic ramp period where the business may underperform the seller's trailing run-rate while institutional knowledge transfers.
Where to practice
Publicly available LBO model templates (Wall Street Prep, Breaking Into Wall Street, and similar training providers) teach the mechanics well; adapt the leverage and equity-check assumptions downward and add a seller note and earnout tranche to make the exercise representative of an LMM deal rather than a $500M+ platform.
