Where LBO Returns Actually Come From

A private equity fund buys a company for $500 million, mostly with borrowed money, holds it for five years, and sells it for $1.1 billion. That is more than double the money. But "we doubled our money" tells you nothing about why — and a PE fund that grew earnings 40% looks very different from one that just watched debt shrink and the market get generous, even if both show the same headline return.

Returns attribution breaks the total gain into three separate, addable pieces: paying down debt (deleveraging), growing the underlying business (EBITDA growth), and the market paying a different price for a dollar of earnings at exit than it did at entry (multiple expansion). Splitting the return this way is how a diligence team or an LP judges whether a fund's track record reflects real operating skill or just financial engineering and good timing.

The three engines

A buyout's equity value at any point is simply enterprise value minus net debt: $\text{Equity} = \text{EBITDA} \times \text{Multiple} - \text{Net Debt}$. Every dollar of equity gain over the hold period has to come from moving one of those three levers.

• Deleveraging. The company's own cash flow retires debt over the hold period, so even with zero growth and no change in multiple, equity value rises because the debt subtracted from enterprise value shrinks.
• EBITDA growth. If earnings grow while the multiple and debt paydown are held fixed, enterprise value rises in direct proportion, and all of that extra value flows straight to the equity holder, since debt holders get a fixed claim.
• Multiple expansion. If the market is willing to pay a higher multiple of EBITDA at exit than the fund paid at entry — because credit markets loosened, the sector re-rated, or the company is now bigger and more strategic — the same EBITDA is worth more, for reasons that have nothing to do with what the fund did operationally.

Worked example

A fund buys a company for a $100 million EBITDA at an 8.0x multiple, financing 60% of the $800 million enterprise value with debt ($480 million of debt, $320 million of equity). Over five years, debt is paid down to $280 million, EBITDA grows to $130 million, and the fund exits at 8.5x.

1. Exit enterprise value. $130 \times 8.5 = 1{,}105$, i.e. $1,105 million.
2. Exit equity value. $1{,}105 - 280 = 825$, i.e. $825 million equity, versus $320 million invested.
3. Attribute the gain. Total equity gain is $825 - 320 = 505$, i.e. $505 million. Deleveraging alone contributes $480 - 280 = 200$, i.e. $200 million. Holding the multiple fixed at 8.0x, EBITDA growth alone would have added $(130-100) \times 8.0 = 240$, i.e. $240 million. The remainder, $505 - 200 - 240 = 65$, i.e. $65 million, comes from the extra 0.5x paid at exit ($130 \times 0.5 = 65$).
4. So of the $505 million gain, roughly 40% is deleveraging, 47% is operating growth, and 13% is multiple expansion — a return that looks respectable on IRR but is still meaningfully propped up by leverage rather than pure business improvement.

What this means in practice

LPs and diligence teams run this decomposition on every deal in a track record before trusting a fund's stated returns, because a portfolio built entirely on multiple expansion is really a bet on market timing dressed up as skill. Deleveraging is mechanical and largely a function of how much debt was used in the first place, so it says little about the operating team. EBITDA growth is the piece that is hardest to fake and the one buyers of a fund's next vintage actually want to underwrite.