27% and 7%: Reading the Growth Numbers Behind a Platform Offer

Owners who sell into a private equity platform are usually sold a growth story: the platform has capital, systems, and scale, and the business will grow faster inside it than outside. A dataset published this week puts a number on that claim, and the number splits in two. Sponsor-backed firms grew roughly three times faster in total. Their organic growth was identical to everyone else's.

The split in the numbers

Inside Public Accounting reported on August 31 that private equity-backed firms in its IPA 100 ranking posted 27.0 percent total revenue growth over the prior year. Firms in the same ranking without outside investment grew 9.1 percent. That is close to a three-to-one gap, and it is the figure most likely to appear in a platform's pitch materials.

The second figure is the one that matters more. Organic growth, meaning revenue growth excluding acquisitions, came in at exactly 7.0 percent for both groups. Not similar, identical.

Twenty-one firms in the IPA 100 now carry some form of outside investment. The capital those firms hold has clearly changed how fast they add revenue. On this data, it has not yet changed how fast they generate revenue from the businesses they already own.

The distinction sounds academic until an owner is deciding what a rollover equity stake is worth. It is not academic at all.

Why this reaches well beyond accounting

Professional services happens to be where the data is cleanest, because Inside Public Accounting has surveyed the same firms for decades and can separate acquired revenue from earned revenue. The pattern it describes is not specific to accounting.

The same consolidation model is running through registered investment advisors, insurance brokerage, veterinary and dental practices, HVAC and plumbing, IT managed services, physical therapy, and specialty engineering. A sponsor backs a platform company, the platform acquires independent firms in the same category, and the combined entity is sold to a larger buyer or recapitalized at a higher multiple three to six years later.

That model has a real economic engine behind it, and it is worth naming plainly. The platform buys small businesses at a lower multiple than the multiple the combined business commands at exit. Buying at five times earnings and selling at ten creates value through arithmetic alone, before anyone improves an operation. The industry term is multiple arbitrage.

Multiple arbitrage is a legitimate strategy. It is not the same thing as operational improvement, and an owner evaluating a platform offer should know which one is actually driving the returns, because the two carry different risks for the equity a seller rolls into the deal.

The offer this changes

Most platform transactions in the middle market share a structure: cash at closing, rollover equity in the platform, and sometimes an earnout tied to performance. In professional services, sellers commonly roll 20 to 40 percent of their consideration into platform equity. That rolled portion is not a side term. It frequently determines whether the transaction is a good outcome or a mediocre one, because it can be worth more than the cash at closing if the platform performs, and considerably less if it does not.

Rollover equity is a bet on the platform's future value. The IPA data speaks directly to what that bet rests on.

If the platform's growth comes primarily from acquisitions, then the value of rolled equity depends on the platform's continued ability to buy firms at attractive prices, integrate them without losing clients or staff, and find a buyer willing to pay a higher multiple for the assembled whole. Each of those is a live variable. Acquisition prices rise as competing platforms enter a category. Integration produces attrition. Exit multiples move with credit conditions and with how many similar platforms are seeking exits at the same time.

If instead the platform is genuinely lifting organic performance across its portfolio, the equity rests on something more durable, because the underlying businesses are worth more regardless of what the next buyer pays for scale.

The 2026 data does not yet show that lift. It may appear later. Sponsor investment in professional services is recent enough that technology, recruiting, and shared-services spending have not had time to show up in revenue growth. An owner rolling equity today, though, is pricing an outcome that has not yet been demonstrated.

What the deals look like on the ground

Two transactions from the past week illustrate the pace. Ascend, an accounting platform backed by Alpine Investors, added GreerWalker of Charlotte on September 1, a firm with $46.8 million in net revenue, 16 partners, and roughly 135 staff. As part of the transaction, GreerWalker adopted an alternative practice structure, splitting tax and advisory services into one entity and attest services into another, a structure regulated professions use because licensing rules restrict outside ownership of the audit practice. Two other IPA-ranked firms announced platform combinations the same day.

The buyer side has shifted accordingly. Financial acquirers, meaning private equity and its platforms rather than strategic operators, accounted for 54.8 percent of accounting-services transaction activity through July 2026, with volume from those buyers up 69.1 percent year over year. Reported pricing for firms of scale runs in a range of roughly four to seven times adjusted EBITDA, with cash, rollover, and earnout components layered into most structures.

For an owner in a consolidating category, this is favorable in one respect that deserves acknowledgment. Competition among platforms supports pricing, and a well-run independent firm has more credible buyers today than it had five years ago. The question is not whether to engage. It is what to verify before signing.

Diligence in the other direction

Buy-side diligence is well understood: the platform examines the seller's earnings quality, customer concentration, and working capital. What gets less attention is that a seller taking rollover equity is making an investment, and is entitled to examine the thing being invested in.

What to watch

Two developments will shape how these structures perform over the next several years.

The first is whether the operational advantages materialize. Sponsors have invested in shared services, technology, and recruiting across their platforms. If those investments work, organic growth at sponsor-backed firms should separate from the field within a few reporting cycles. If it stays at parity, the model's returns will continue to rest on acquisition arithmetic and exit multiples.

The second is exit crowding. Platforms assembled in the same category during the same period tend to reach the end of their hold periods together. When several similar assets seek buyers simultaneously, the multiple expansion the whole strategy assumes becomes harder to achieve. Owners rolling equity into a platform late in its cycle carry more of that risk than owners who rolled in early.