Walk Me Through an LBO
A PE firm buys a company mostly with borrowed money, uses the company's own cash flow to pay down that debt, then sells in ~5 years. Returns come from debt paydown, EBITDA growth, and multiple expansion. Four steps: entry → sources & uses → projection/paydown → exit & returns.
Definition
'Walk me through an LBO' asks you to explain how a private equity firm buys a company using a large amount of debt, runs it for ~3-7 years, and sells it for a profit. The interviewer is testing whether you understand the mechanics that drive returns — leverage, debt paydown via cash flow, and exit — not whether you can build a 40-tab model. The headline answer is four steps: (1) determine the purchase price and entry multiple, (2) build the sources & uses to fund the deal, (3) project the company and pay down debt with its cash flow, and (4) sell at exit and calculate IRR and MOIC.
Step 1 — Entry Assumptions (Purchase Price)
Start with the entry enterprise value: Entry EV = Entry EBITDA × entry multiple. State your assumptions out loud — e.g., 'Let's say we buy a company with $100M of EBITDA at a 10x multiple, so a $1.0bn purchase price.' This is also where you set the leverage: how much debt the company can support, typically quoted as a Debt/EBITDA multiple (often 4-6x depending on the market and the business's cash flow stability).
Step 2 — Sources & Uses
The Sources & Uses table shows how the deal is funded (sources) and what the money pays for (uses). Uses: the purchase of equity, refinancing of existing debt, and transaction/financing fees. Sources: new debt (term loans, senior notes, etc.) plus the sponsor's equity check, which is the plug. Equity = Total Uses − Total Debt. The single most important idea: the more debt you raise, the smaller the equity check, which (all else equal) amplifies returns — this is leverage. Less equity in means a higher percentage return on that equity at exit.
Step 3 — Operating Projection & Debt Paydown
Project the company forward (usually 5 years). Grow revenue and EBITDA per your operating case, then build a simple debt schedule: the company generates free cash flow (EBITDA − cash interest − taxes − CapEx − change in working capital) and uses it to sweep down debt each year. As debt falls, interest expense falls, and equity value builds — even if the company is sold at the same multiple it was bought at. Debt paydown is a core return driver and the mechanic interviewers most want to hear you articulate.
Step 4 — Exit & Returns
At exit (year 5), compute Exit EV = Exit EBITDA × exit multiple. Subtract remaining net debt to get exit equity value. Returns are then expressed two ways: MOIC (exit equity ÷ initial equity invested) and IRR (the annualized return — see IRR vs MOIC). The three levers of return are: (1) EBITDA growth (revenue growth + margin expansion), (2) debt paydown / deleveraging, and (3) multiple expansion (selling at a higher multiple than you bought — the least reliable lever and one you shouldn't bank on).
What Makes a Good LBO Candidate
If asked the follow-up 'what makes an ideal LBO target?', hit: strong and predictable free cash flow (to service debt), low CapEx and working capital needs, a stable/defensible market position, low existing leverage, hard assets or a recurring revenue base that lenders will finance, and a clear exit path. The opposite — cyclical, capital-intensive, high-growth-but-cash-burning businesses — are poor LBO candidates because the debt load is too risky.
Worked Example — With Real Numbers
Buy a company with $100M EBITDA at 10x → $1,000M entry EV. Fund with 6x leverage = $600M debt and $400M sponsor equity. Over 5 years, grow EBITDA to $150M (revenue growth + margin) and pay down debt to $300M using free cash flow. Exit at the same 10x multiple → Exit EV = $150M × 10 = $1,500M. Exit equity = $1,500M − $300M net debt = $1,200M. MOIC = $1,200M ÷ $400M = 3.0x. IRR ≈ 3.0x over 5 years ≈ 25%. Notice the return came from EBITDA growth AND debt paydown — with zero multiple expansion. (Illustrative EXAMPLE figures.)
Key Takeaways
Four steps: entry price → sources & uses → projection/debt paydown → exit & returns
Equity check is the plug: Equity = Total Uses − Debt raised; more debt = less equity = amplified returns
Three return drivers: EBITDA growth, debt paydown (deleveraging), and multiple expansion
Returns are measured by MOIC (exit equity ÷ entry equity) and IRR (annualized)
Ideal LBO target = stable, strong free cash flow, low CapEx, defensible, with a clear exit
Common Mistakes in Interviews
Forgetting that the equity check is the plug in Sources & Uses, not an independent input
Saying multiple expansion is a primary return driver — it's the least reliable; lead with growth and paydown
Confusing IRR and MOIC, or quoting MOIC as if it accounts for time
Ignoring debt paydown — the whole point of leverage is that cash flow deleverages the company over the hold
Picking a high-growth cash-burning company as an 'ideal' target — LBOs need cash flow to service debt
How Interviewers Test This
Practice this with round numbers ($100M EBITDA, 10x, 5-6x leverage, 5-year hold) so you can run a paper LBO in your head without a calculator. Volunteer your assumptions as you go and end by naming the three return drivers — that signals you understand why the model makes money, which is what PE-track interviewers actually want.
Related Concepts
Directly referenced in this topic
Leveraged Buyout (LBO)
A Leveraged Buyout (LBO) is the acquisition of a company using a significant amo...
Paper LBO
A Paper LBO is a simplified, back-of-the-envelope [leveraged buyout](https://www...
IRR vs. MOIC
[IRR (Internal Rate of Return)](https://www.ibflash.com/concepts/internal-rate-o...
Debt Schedule
A debt schedule is a supporting schedule in a financial model that tracks each t...
Debt / EBITDA (Leverage Ratio)
Debt / EBITDA (also called the leverage ratio) measures how many years of operat...
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