LBO Modelling: What Is a Leveraged Buyout Model and How Does It Work?

What Is an LBO?

A leveraged buyout (LBO) is an acquisition where the buyer finances most of the purchase price with debt, using the target company's own assets and future cash flows as collateral for the borrowing. Private equity firms use LBOs to acquire businesses — typically paying 30-40% equity and 60-70% debt. The equity return is amplified by the leverage: if the business grows in value, the equity portion grows proportionally more.

What Is an LBO Model?

An LBO model calculates the returns a private equity investor can expect from buying a business under specific assumptions about: entry price (the purchase multiple), debt structure and cost, the hold period (typically 3-7 years), the growth of the business during the hold, and the exit price (exit multiple). The primary outputs are IRR (internal rate of return) and money-on-money multiple (how many times the equity invested was returned).

Key Components of an LBO Model

Entry assumptions: Enterprise value at acquisition, EBITDA at acquisition, entry multiple (EV/EBITDA), equity contribution and debt structure (senior debt, mezzanine, etc.).

Operating model: Revenue growth, EBITDA margin progression, capex, and working capital during the hold period — often taken from a simplified three-statement model.

Debt schedule: Annual interest payments, principal repayments from free cash flow, and the debt balance at exit.

Exit assumptions: Exit EBITDA (projected year of exit) times exit multiple gives exit enterprise value. Subtract remaining debt to get exit equity value. Compare to entry equity invested to calculate IRR and money multiple.

What Drives LBO Returns?

Three levers drive equity returns in an LBO: EBITDA growth (growing the business), multiple expansion (selling at a higher multiple than you bought), and debt paydown (reducing debt during the hold increases the equity value at exit). PE firms focus on all three — the best deals deliver on all of them.

Who Needs LBO Modelling Skills?

LBO modelling is essential for investment banking analysts in leveraged finance or M&A, private equity professionals, and corporate development teams at PE-backed businesses. For ACCA members moving into PE or investment banking, LBO basics are often tested in technical interviews. The CIMA strategic level also covers aspects of financing structures relevant to LBO analysis.