What Is an LBO Model?
A leveraged buyout (LBO) model is a financial framework used by private equity firms to evaluate the feasibility and returns of acquiring a company primarily using debt financing. The fundamental premise: use the target company's own cash flows to service the acquisition debt, returning equity to investors at exit.
At its core, an LBO model answers three questions:
- Can we afford the deal? — Does the target generate enough free cash flow to service the debt load?
- What returns can we generate? — What IRR and MOIC can we achieve at various exit multiples?
- Where are the levers? — Which operational improvements create the most value?
The Five Building Blocks
1. Sources & Uses
The entry point for any LBO. Sources (where the money comes from) must equal uses (where it goes).
Typical Sources:
- Senior secured debt (3–5x EBITDA)
- Mezzanine / subordinated debt
- Sponsor equity (30–40% of total)
Typical Uses:
- Purchase price (Entry EV)
- Financing fees
- Transaction costs
2. Debt Schedule
Model each tranche of debt separately — term loans, revolvers, and subordinated notes each carry different rates, amortization schedules, and covenants.
Key outputs:
- Annual principal repayments
- Interest expense by tranche
- Ending debt balance (feeds into exit equity value)
3. Income Statement & Cash Flow
Project 5-year financials using:
- Revenue growth assumptions (organic + acquisition)
- EBITDA margin expansion (operational thesis)
- CapEx and working capital requirements
- Taxes (adjusted for interest deductibility)
The most critical line: Free Cash Flow available for debt repayment. This directly determines how fast leverage comes down.
4. Returns Analysis
At the assumed exit year (typically year 3–7):
Exit Enterprise Value = Exit EBITDA × Exit Multiple
Exit Equity Value = Exit EV − Remaining Debt
Sponsor Return = Exit Equity Value − Entry Equity
Return metrics:
- IRR — annualized return; PE firms typically target 20–25%+
- MOIC — money-on-money multiple; typical target is 2.5–3.5x
5. Sensitivity Tables
No IC memo is complete without sensitivity analysis. Standard tables:
| | 6.0x Exit | 7.0x Exit | 8.0x Exit | |---|---|---|---| | 5% Revenue Growth | 18% | 22% | 26% | | 8% Revenue Growth | 21% | 25% | 30% | | 12% Revenue Growth | 25% | 29% | 34% |
Illustrative IRR by exit multiple and revenue CAGR.
Common Mistakes to Avoid
Over-leveraging the model. Stress-test debt serviceability at downside scenarios — not just base case. Covenant headroom matters as much as headline returns.
Ignoring working capital. Fast-growing businesses often consume cash through receivables and inventory. A model that ignores this will overstate free cash flow.
Single-point exit assumptions. Always model a range of exit multiples. Entry multiple compression is a real risk, especially in today's rate environment.
Circular references. Cash sweep mechanics and revolver borrowings create model circularity. Use iteration settings carefully or restructure the flow.
What Makes a Model IC-Ready?
An investment committee model needs to be more than technically correct — it needs to tell a story. Structure your outputs to answer:
- Base / Upside / Downside returns in a single view
- Value creation bridge: how much return comes from leverage paydown vs. EBITDA growth vs. multiple expansion
- Break-even analysis: what EBITDA growth do you need to return capital?
The best LBO models are simple enough to run live in a meeting and robust enough to withstand scrutiny from a skeptical IC.
Altrion Intelligence builds audit-ready LBO models delivered in 24–48 hours. Start your free pilot →