What Drives an LBO Return?

1. EBITDA growth — grow the company's earnings between entry and exit, via revenue growth (volume, price, M&A) and/or margin expansion (operating leverage, cost cuts). At a constant exit multiple, higher EBITDA = higher enterprise value = higher equity value.

2. Debt paydown (deleveraging) — the company's levered free cash flow is swept to pay down debt over the hold. Every dollar of debt repaid is a dollar of equity created, because equity = enterprise value − net debt. This is why LBOs target businesses with stable, predictable cash flow.

3. Multiple expansion — exiting at a higher EV/EBITDA multiple than you paid at entry. Real but market-dependent and outside the sponsor's control, so you don't underwrite it in the base case — most models assume exit multiple = entry multiple to stay conservative.

The amplifier: leverage. Funding the deal mostly with debt means a small equity check controls a large asset. Any EV gain accrues disproportionately to that thin equity slice — that's the 'leveraged' in leveraged buyout.

Exit equity value = (Exit EBITDA × Exit multiple) − Net debt at exit.

Entry equity check = (Entry EBITDA × Entry multiple) − Initial net debt.

MOIC = Exit equity ÷ Entry equity. IRR annualizes that over the hold period. You can decompose the equity gain into the three buckets: how much came from EBITDA growth (ΔEBITDA × entry multiple), from multiple expansion (exit EBITDA × Δmultiple), and from debt paydown (reduction in net debt). Top PE shops want their returns to come from the first two — operational value creation — not from buying low and selling high on multiples.

Each characteristic maps to a driver: stable, predictable cash flows → fuels debt paydown; strong margins / margin upside → drives EBITDA growth; low existing leverage and low capex → leaves room to take on debt and free up cash for the cash flow sweep; a clear exit (strategic buyer, sponsor, or IPO) → realizes the gain. Add-on M&A (buy-and-build) can drive EBITDA growth and even create multiple arbitrage if add-ons are bought cheaper than the platform's exit multiple.

'Which driver matters most?' Debt paydown and EBITDA growth, because they're controllable; multiple expansion is a bonus you don't bank on. 'How do you boost IRR without changing the business?' Use more leverage, shorten the hold, dividend recap, or pay a lower entry price. 'Why does a shorter hold raise IRR?' IRR is time-sensitive — the same MOIC over 3 years beats 5 years. 'What if you can't pay down debt?' Then returns lean entirely on EBITDA growth and multiple expansion, which is riskier. A paper LBO tests whether you can run this math by hand.