Walk Me Through an LBO

"Walk me through an LBO" asks you to explain how a private equity firm buys a company mostly with borrowed money, runs it for several years, and sells it for a profit. The clean answer is a six-step story: set the entry price as a multiple of EBITDA, build sources and uses to fund the deal, project the business over a five-year hold, pay down debt with free cash flow, exit at a multiple, then compute IRR and MOIC. Per Breaking Into Wall Street, "the math works because leverage amplifies returns" because the sponsor uses less of its own cash upfront. Lead with that framework, then walk the mechanics. Deliver it in about ninety seconds.

TL;DR

An LBO buys a company with debt and equity, holds it about 5 years, then sells it.
The six steps: entry valuation, sources and uses, projection, debt paydown, exit, returns.
BIWS worked example: 100 million dollars EBITDA at 10x, 60 percent debt, 400 million equity, exits at 2.5x MOIC, roughly 20 percent IRR.
Returns come from three drivers: debt paydown, EBITDA growth, and multiple expansion.
IRR rule of thumb per BIWS: a 2x MOIC is about 15 percent and a 3x is about 25 percent over the hold.

What is an LBO?

A leveraged buyout is the acquisition of a company financed largely with borrowed money. A private equity sponsor puts in a slice of equity, raises the rest as debt against the target's own cash flows and assets, runs the business for several years, then sells it. The debt is serviced and paid down over the hold period using the company's free cash flow. Breaking Into Wall Street describes it plainly: "in a leveraged buyout, a PE firm acquires a company using a combination of Debt and Equity, operates it for several years, and then sells it." The structure resembles buying a rental property with a mortgage: a small equity check controls a much larger asset, and the tenant's rent pays down the loan.

Why does leverage boost returns?

Leverage boosts returns because it shrinks the equity the sponsor has to invest upfront, so any gain in enterprise value lands on a smaller base. If the company's value grows while the equity check stays small, the return on that equity is magnified. BIWS notes a second effect: using the company's own cash flows to repay debt principal and interest also produces a better return than letting that cash sit idle. Debt is cheaper than equity, and the interest is tax-deductible, which lowers the cost of capital. The trade-off is risk. More debt means larger fixed interest payments and less margin for error, so a downturn that a debt-free company would survive can wipe out a highly levered one.

What are the six steps of an LBO?

The clean walkthrough is six steps, and naming them in order shows you understand how entry, leverage, operations, and exit connect to produce a return.

Set the entry. Determine the purchase price, usually as a multiple of EBITDA. Financial Edge gives the formula plainly: implied entry valuation equals the entry multiple times EBITDA, so 5.0x EV/EBITDA on 756 million dollars of EBITDA is a 3,780 million dollar enterprise value.
Build sources and uses. Lay out how much debt and equity fund the purchase (sources) against the purchase price plus fees (uses).
Project the business. Forecast revenue, EBITDA, and free cash flow over a five-year hold.
Pay down debt. Use free cash flow to reduce debt each year, which transfers value to equity.
Set the exit. Apply an exit multiple to the final-year EBITDA, subtract remaining debt, and you have exit equity value.
Calculate returns. Compare exit equity to entry equity to get IRR and MOIC.

How does an LBO generate returns? (the three drivers)

Every dollar of LBO return traces to one of three drivers, and a strong answer names all three while flagging which are reliable. Debt paydown and EBITDA growth are the durable sources; multiple expansion is the speculative one because it depends on the market, not on anything the sponsor controls.

Debt paydown (deleveraging): free cash flow reduces debt, so a larger share of a roughly stable enterprise value accrues to equity.
EBITDA growth: growing the business organically or through add-on acquisitions increases value at any given multiple.
Multiple expansion: selling at a higher multiple than the entry multiple, the least reliable driver, since it hinges on market conditions at exit.

Returns driver	What it does	Reliability
Debt paydown	FCF cuts debt, equity captures more EV	High, within the sponsor's control
EBITDA growth	More earnings at the same multiple	High, operationally driven
Multiple expansion	Exits above the entry multiple	Low, market-dependent

What is the difference between IRR and MOIC?

MOIC and IRR both measure return, but only IRR accounts for time. MOIC (multiple on invested capital) is exit equity divided by entry equity, a simple "how many times my money back." IRR is the annualized rate of return, which captures when the cash comes back. A 3.0x MOIC over three years is a far stronger IRR than the same 3.0x over seven years. BIWS offers a quick mental-math rule: a 2x MOIC is about 15 percent IRR and a 3x is about 25 percent over the hold.

$MOIC = \frac{\text{Exit Equity}}{\text{Entry Equity}} \qquad IRR = MOIC^{1/n} - 1$

In the BIWS worked example, a sponsor buys a company with 100 million dollars of EBITDA at a 10x multiple using 60 percent debt, so the equity check is 400 million dollars. Five years later EBITDA has grown to 150 million dollars, the company exits at 9x, and 250 million dollars of debt has been repaid, leaving about 1 billion dollars of equity proceeds. That is a 2.5x MOIC, which maps to roughly a 20 percent IRR. For deeper return mechanics see IRR vs MOIC, and to practice the math without a model see how to solve a paper LBO.

What makes a good LBO candidate?

A good LBO candidate throws off stable, predictable cash flow, because that cash is what services and repays the debt. BIWS lists the ideal traits as stable cash flows, low ongoing capital expenditure, a realistic exit path, and a reasonable acquisition price. Low existing debt, a defensible market position, and room to improve margins or grow through add-ons all help. The common thread is downside protection: the more certain the cash flows, the more debt the company can safely carry, and more debt means a smaller equity check and a higher potential return. Cyclical, capital-intensive, or cash-burning businesses make poor targets because a bad year can leave them unable to cover interest. The debt itself usually comes from leveraged finance.

Frequently Asked Questions

Why does an LBO produce higher returns than an all-cash purchase?

An LBO produces higher returns because the sponsor invests less of its own equity upfront, so any gain in enterprise value lands on a smaller base. BIWS gives two reasons: debt reduces the upfront cash payment, which boosts returns, and using the company's cash flows to repay debt principal and interest produces a better return than holding that cash. Cheaper, tax-deductible debt lowers the cost of capital, though it also adds risk.

How much leverage is used in an LBO?

Leverage is sized off the target's EBITDA and cash flow capacity, and the debt quantum is typically expressed as a multiple of EBITDA or a percentage of the purchase price. In the BIWS example, debt funds 60 percent of a 10x purchase. The exact level depends on credit markets and how predictable the company's cash flows are, since lenders extend more debt to stable businesses that can reliably cover interest.

How long is a typical LBO hold period?

The typical hold period is about five years, long enough to grow EBITDA, pay down a meaningful chunk of debt, and time a sale to favorable market conditions. Some funds exit in three years if growth comes faster or a strong buyer appears, and others hold seven or more. Because IRR is time-sensitive, a longer hold lowers IRR even when MOIC is unchanged, so sponsors weigh the timing of the exit carefully.

Why does deleveraging create value?

Deleveraging creates value because as debt is repaid, equity captures a larger share of a roughly stable enterprise value. Picture a 1,000 enterprise value with 600 of debt and 400 of equity: if free cash flow repays 200 of debt, equity rises to 600 even before any growth. The sponsor effectively converts the company's operating cash flow into equity value, which is why predictable free cash flow is the trait that matters most.

What happens to IRR if the hold period lengthens?

All else equal, a longer hold lowers IRR even if MOIC is unchanged, because IRR is annualized and the same total return is spread over more years. A 3.0x MOIC over three years is roughly a 44 percent IRR, while the same 3.0x over seven years is closer to 17 percent. This is why sponsors push to grow EBITDA early and exit before returns get diluted by time.

How is the exit value calculated in an LBO?

The exit value is calculated by applying an exit multiple to the final-year EBITDA to get exit enterprise value, then subtracting any remaining debt to reach exit equity value. Financial Edge frames the entry the same way, multiplying the entry multiple by EBITDA, and the exit mirrors it. Conservative cases assume the exit multiple equals the entry multiple, so the return comes from growth and paydown rather than multiple expansion.

Sources

Breaking Into Wall Street, "LBO Model Interview Questions": https://breakingintowallstreet.com/kb/leveraged-buyouts-and-lbo-models/lbo-interview-questions/ (checked June 2026)
Financial Edge, "Walk Me Through an LBO Model": https://www.fe.training/free-resources/lbo/walk-me-through-an-lbo-model-interview-question/ (checked June 2026)
Transacted, "Walk Me Through an LBO": https://www.transacted.io/walk-me-through-an-lbo (checked June 2026)
Lumovest, "Walk Me Through an LBO Model": https://www.lumovest.com/library/investment-banking-interview-questions/walk-me-through-an-lbo-model/ (checked June 2026)