The arithmetic of private equity returns roughly doubled its demands, but the vocabulary describing those returns did not change at all.
For most of the last decade, a deal could work without anyone inside the portfolio company doing anything remarkable. Entry multiples climbed. Debt was cheap and plentiful. A sponsor who bought a sound business at a defensible price and held it five years could reach a respectable outcome on the strength of conditions rather than operations.
Bain’s 2026 Global Private Equity Report puts an unusually blunt number on how far that has moved. Its rule of thumb is “12 is the new 5.” Through private equity’s golden decade in the 2010s, a typical deal needed roughly 5 percent annual EBITDA growth to reach a 2.5x multiple on invested capital across a five-year hold. With borrowing costs now sitting in the 8 to 9 percent range and multiple expansion gone, Bain finds the same result takes something closer to 10 to 12 percent annual EBITDA growth.
The performance requirement roughly doubled, but the language used to describe how firms intend to meet it did not move an inch.
Two of the three return drivers went quiet
Sponsor returns have always come from some combination of three things: multiple expansion, leverage, and earnings growth. Two of them have stopped contributing.
Multiple expansion was never an operating accomplishment. It was a market condition that flattered good decisions and forgave mediocre ones, and it is no longer available at scale. Leverage is an amplifier rather than a source, and at 8 to 9 percent it amplifies the cost of being wrong as efficiently as it once amplified the benefit of being right. A capital structure built for a 4 percent world does not quietly adapt to a 9 percent one.
That leaves earnings growth, which is the only driver of the three that actually responds to management. It is also the only one that cannot be bought, negotiated, or timed. It has to be produced.
Operating improvement is specific, which makes it testable
This is where the shift becomes something more than a financing story. Sustaining 10 to 12 percent annual EBITDA growth across a hold period is a different discipline from waiting out a cycle. It requires a company that knows where its margin actually originates, which customers are worth the cost of serving, which product lines subsidize which others, where working capital is trapped, and which functions are quietly creating friction for the ones downstream of them.
None of that is mysterious. All of it is specific. And specificity is the property that distinguishes a plan from a posture, because a specific claim can be tested against evidence and a general one cannot.
Bain’s own conclusion runs in the same direction: the firms that separate from the field will be the ones that turn differentiation into a system rather than a slogan, supported by data rather than narrative.
What this changes about diligence
If the return now depends on operating improvement, then the operating plan deserves the same scrutiny a lender applies to a projection. A useful test is whether five questions can be answered without hedging.
Value for whom — the customer, the workforce, the sponsor, an eventual acquirer, or some combination. Through what mechanism — revenue growth, margin structure, risk reduction, capital efficiency, management depth, transferability. Measured by which evidence — which financial and operational indicators are expected to move, and by how much. Realized over what period — a near-term operating gain or a capability that will not appear in this year’s statements. And who is accountable — who owns the initiative, its dependencies, and the response when an assumption proves wrong.
A management team that answers those five cleanly has a plan. A team that reaches for transformation, alignment, or unlocked potential has an aspiration, and aspirations were affordable when multiple expansion was doing the work. At 12 percent, they are not.
The uncomfortable implication
The interesting consequence of Bain’s number is not that returns got harder. It is that the gap between firms with a genuine operating system and firms with a persuasive deck is now visible in results rather than hidden by the market.
Cheap capital was a tolerant environment. It let vague plans produce acceptable outcomes and made rigorous ones look like overhead. Expensive capital is an unforgiving auditor. It sorts by whether someone identified the constraint, sequenced the work, assigned the ownership, and came back to measure.
Firms that advise on this work have had to become more concrete along with the market. Redtail Capital, which builds enterprise value creation roadmaps for middle-market companies, structures the exercise around diagnosis across the whole business system rather than function by function — on the reasoning that a constraint sitting between operations and sales will never be found by examining either one alone.
The math has already made its adjustment. The language is still catching up, and the distance between the two is where this cycle’s underperformance will come from.
