LBO Modelling cover

LBO Modelling: From Assumptions to IRR

A Leveraged Buyout (LBO) is one of the most iconic transactions in finance: acquiring a company through a combination of debt and equity. The purpose of this page is to walk through a complete LBO model — from base assumptions to IRR.

Starting Assumptions

These are the starting assumptions given (no calculations here):

  • Revenues (LTM): 100 M$
  • Annual Revenue Growth: 10% (constant for 5 years)
  • EBITDA (LTM): 50 M$
  • EBITDA Margin: constant
  • D&A + Capex: 5% of annual revenues
  • NWC: unchanged
  • Tax Rate: 25%
  • Entry Multiple: 10x EBITDA
  • Exit Multiple: 10x EBITDA after 5 years
  • Projection Period: 5 years
  • Initial Leverage: 6x EBITDA
  • Debt Interest Rate: 8%
  • No capital amortization until maturity

TEV & Capital Structure

Now we start calculating the purchase TEV and the initial capital structure (Debt & Equity).

  • EBITDA LTM = 50
  • Entry Multiple = 10x
  • TEV_in = 50 × 10 = 500
  • Initial Leverage = 6 × EBITDA ⇒ Debt = 6 × 50 = 300
  • Equity = 500 − 300 = 200

Result: TEV_in = 500; Initial Debt = 300 (60%); Equity Sponsor = 200 (40%).

Interest Expense on Debt

Debt is not amortized during the 5-year period, so interest is flat each year.

  • Total Debt = 300
  • Interest Rate = 8%
  • Annual Interest Expense = 300 × 8% = 24

Projection over 5 Years

We project P&L down to (levered) free cash flow over five years.

LBO Projection over 5 years

Exit TEV & Returns

Step 1 — Exit TEV

  • EBITDA Y5 = 80.5
  • Exit Multiple = 10x
  • TEV_out = 80.5 × 10 = 805

Step 2 — Exit Equity Value

  • TEV_out = 805
  • Net Debt = 300
  • Equity Exit Value = 805 − 300 = 505

Step 3 — Returns

  • Invested Equity = 200
  • Exit Equity = 505
  • MoM = 505 / 200 = 2.53x

I estimated the IRR by intuition: ~20% for ~2.5x in 5 years (rule-of-thumb: 2x in 5y ≈ 15%; 3x in 5y ≈ 25%).

← Back to Blog

Read Also