A Leveraged Buyout (LBO) is a purchase of a company in which a sponsor pays for most of the price with borrowed money and only a minority with its own equity. The debt sits on the acquired company and is serviced by that company's cash flows, so a fund can control a business several times the size of its equity check and earn its return by paying the debt down and selling the business later.
Why it matters
The LBO is the core private equity transaction. Returns come from three levers: paying down debt with free cash flow, growing EBITDA, and multiple expansion. The model exists to test how those levers combine under a given capital structure, and the leverage is what amplifies the equity return, in both directions.
The shape of a deal
Acquire at $150M (6.0x of $25M EBITDA), fund it with about $80M of debt and $80M of equity, grow EBITDA and pay down debt over five years, then exit. The equity grows faster than the enterprise because debt paydown accrues entirely to equity. The full build, from Sources & Uses to the returns, is in How to Build an LBO Model.
The common mistake
Assuming leverage alone makes a deal work. Without genuine operating improvement or de-risking, high leverage simply magnifies a mediocre business in both directions. The errors that quietly break a model, from rollover to hidden financing cash, are in 5 Common LBO Modeling Traps.