Vertical Software Acquirers: Return on Acquired Capital

Growth Is Mostly Bought; Value Is the Return on What Was Paid

A vertical-market software acquirer buys small products that customers cannot easily replace: clinic software, marina billing, public-sector workflow, and similar niches. Organic growth on the existing book is often low. Compounding comes from cash taken out of the portfolio and put into the next deal. Value is therefore the reinvestment rate times the return earned on acquired capital, not a SaaS land-and-expand story pasted onto a roll-up.

That framing also explains why a Rule of 40 sum that uses total revenue growth misleads here: bought growth is not the same trade-off as organic growth plus margin.

Constellation Software as the Worked Case

Constellation Software (FY2025, IFRS, US dollars) is the serial-acquirer illustration in this set.

Organic growth of 4% against total growth of 15.5% is the tell: most of the top-line increase was acquired. Recurring maintenance at 74.9% is the cash that funds the next deals. Capex is trivial at 0.6% of revenue; the real reinvestment line is acquisition spend.

Free Cash Flow Available to Shareholders

Constellation’s own measure, free cash flow available to shareholders (FCFA2S), is operating cash flow less interest, lease payments, the IRGA/TSS liability revaluation and capital expenditure. FY2025 free cash flow available to shareholders was $1,683M, up from $1,472M. It is deliberately after the cash costs of running and financing the portfolio, and it is the pool from which acquisition firepower comes.

Because there are no stock options, there is no stock-pay add-back flattering the cash line the way FCF before versus after stock pay describes for option-heavy SaaS names. Executives buy shares with 75% of the after-tax bonus and hold them in escrow for an average of at least four years.

Return on Acquired Capital in Words

Pay a price per unit of acquired revenue, earn an operating margin on that revenue, tax it, and divide. That return is what the deployment rate multiplies to produce acquired growth. If the firm reinvests a high share of free cash flow into deals that clear the cost of capital, book value and cash earnings can compound even when organic growth is near 4%. If deployment falls or purchase prices rise enough to crush the return, the compounding slows even if the existing products keep renewing.

Constellation does not publish a ROIC figure, a deal count or a retention rate in the FY2025 materials used here. The model inputs are therefore inferred from cash deployment, recurring share and organic growth.

What to Carry into a Model

1. Split organic growth from acquired growth before any screen that uses revenue growth.
2. Use the filer’s own free-cash definition when it differs from operating cash flow less capex.
3. Treat acquisition spend as reinvestment, not as a one-off “M&A” footnote outside the DCF.
4. Keep stock-pay assumptions at nil when the filer has no option plan.
5. Compare return on acquired capital with WACC; deals add value when that return clears the hurdle after allowing for growth on the bought book.

The products inside the portfolio can look like quiet vertical software. The listed vehicle reads best as a capital allocator: deployment rate times return on acquired capital.