Sponsor returns demystified.

Two LBOs can both produce 25% sponsor IRR and tell completely different stories about what actually happened. One is an operating thesis that worked; the other is a re-rating bet that paid off; the third is just leveraged exposure to the cycle. The decomposition is the single most useful framing in sponsor underwriting — and it's what fund managers want you not to think too hard about when they pitch.

The three drivers

Sponsor exit equity equals entry equity plus three pieces of value creation. The math is a simple identity:

The sum equals the value created during the hold (exit equity minus entry equity, modulo recap timing). The decomposition tells you what kind of bet the deal actually was. The Returns Waterfall calculator runs this on any deal in milliseconds, with a returns-bridge SVG that makes the proportions visual.

The 30% rule

Industry rule of thumb that survives every market cycle: if multiple expansion is more than 30% of total value created, you're underwriting a re-rating bet, not an operating thesis. This isn't a hard line, but it's the threshold that gets sponsors challenged in IC. Above 30%, your deal is leveraged exposure to where comps trade at exit — not where the company actually goes.

Below 15%, you're in operating-thesis territory. The deal works if the company executes. Comps can compress and you still get paid. Between 15% and 30% is normal. It's where most healthy LBOs live. Above 30% is the territory where a sponsor presentation needs to defend specifically why the multiple should expand — and credibly. "Software multiples just go up over time" is not a defense. "We're moving from a Tier-3 services multiple to a Tier-1 software multiple as we shift the revenue mix" is — if it's grounded in real analytics.

How to read a sponsor pitch

When a fund manager pitches you their track record, they almost always lead with IRR. Sometimes MOIC. Rarely the decomposition. That's by design — IRR and MOIC are headline numbers; the decomposition tells you which piece of luck you're buying.

Three questions to ask any sponsor presenting their fund's historical performance.

1. What was the average multiple expansion contribution across the fund? If the answer is 30%+ on a 2017-2021 vintage, they got rich on the cycle. Software comps re-rated from ~8× to ~15× over that window. Industrial multiples compressed. Same deal team, same diligence, dramatically different reads on what made the fund.

2. What's the EBITDA-growth contribution on the deals that actually worked? The headline numbers blend the winners and losers. If the EBITDA-growth contribution on the winners is 60%+ of the gain, the underwriting was about operating thesis. If it's 20% and the rest came from multiple expansion, you're paying carry on a market call.

3. How much of MOIC came from dividend recaps? A year-3 leverage refresh that pulls cash out and rebuilds debt back to the original level boosts MOIC because cash returns get pulled forward. It doesn't change the underlying operating story. Funds that lean on recaps tend to be levered to credit availability rather than operating skill. (The Returns Waterfall calculator models this as a separate input; flip the recap on and watch IRR rise without operating performance changing.)

The five common sleights of hand

"Same multiple in / out." When sponsors model deals with entry multiple equal to exit multiple, they hide the fact that they're either (a) implicitly assuming the cycle doesn't matter, or (b) anchoring exit to current comps without challenging whether those comps will hold. Always ask what an exit-multiple-down scenario looks like.

Goal-seeking the leverage. Some pitches talk through a deal's IRR at the leverage level that makes the math work rather than the leverage that lenders would actually fund. If a deal needs 6.5× on a cyclical to clear 20% IRR, and lenders will fund 4.5×, the deal doesn't work — it's not that "with right financing, IRR is 20%."

Aggressive run-rate normalizations. EBITDA at entry is what determines the entry multiple. Run-rate adjustments that annualize a single good quarter, or apply pro-forma synergies that haven't materialized, mechanically inflate Driver 1. The QofE Quick-Check tool walks through the standard normalizations with the haircut a Big Four QofE provider would apply — without that discipline, the entry EBITDA is just the seller's wishlist.

Dividend recap timing. Year-3 recaps boost reported IRR by 200-400 bps in most LBOs because cash returns get pulled forward. If your benchmark for "good fund" is 25% IRR, half of that can be timing of distributions rather than economic gain.

Cherry-picked comparison sets. When a sponsor claims "top-quartile performance," ask what universe they're being compared to. Vintage matters. Strategy matters. Fund size matters. A 2018 mid-market software fund being benchmarked against 2010-2014 energy funds is a marketing slide, not a real comparison.

What good looks like

A clean LBO — the kind a sponsor talks about quietly because it looks unimpressive on a marketing deck — usually has the following decomposition: EBITDA growth contributing 50-65% of value created; debt paydown and retained cash 25-35%; multiple expansion under 20%. Total IRR in the 18-25% range. MOIC of 2.0-2.5×. Exit at the same or modestly higher multiple than entry. No recap.

It's the deal that doesn't make headlines because nothing went wrong. The operating story worked. The capital structure handled the cycle. The exit didn't require comps to be at a specific level. That's the deal you want to underwrite, and the deal that compounds reliably across vintages. Funds that string a decade of these together build genuine track records — and they're rare because most deal teams chase higher IRRs by leaning harder on drivers 2 and 3.

The one-paragraph version

Sponsor returns decompose into three drivers: EBITDA growth (the operating story), multiple expansion (the re-rating bet), and debt paydown plus retained cash (financial engineering). Healthy LBO math is mostly operating story and debt paydown, with multiple expansion under 30% of total value creation. When you see a fund pitch with a great IRR, the question to ask is which of the three drivers did the work — and how much of that was a market call rather than operating skill. Same answer for IC; same answer for LP diligence; same answer for any analyst trying to figure out whether sponsor returns are a reliable framework for thinking about the next deal.

Brandon Leon writes independent equity research focused on cyclicals. Spotted an error or have a better example? Email [email protected]. The full disclaimer covers everything in detail at disclaimer.