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The CFO Role: Succession's Most Overlooked Piece

30 August 2026 · By Reinhard Voelkel
Close-up of aligned columns of figures on a ledger sheet

A succession plan that names a successor for the top job but says nothing about who will own the numbers once the founder is gone is not a succession plan. It is half a plan that doesn't know it.

In most mandates I run, the conversation about who takes over starts in the same place every time: who has the natural authority to lead, who can decide alone, who already commands trust with clients and staff. Those are the right questions to ask. What almost nobody asks is the mirror question for the finance seat, even though that is usually where a sale is actually won or lost, once due diligence begins in earnest. A buyer isn't financing a story. A buyer is financing numbers, and those numbers carry the fingerprints of whoever produced them.

What I see, across a majority of mid-sized owner-run companies, is that the real management reporting, the one showing margin by customer, cash three months out, cost trends by product line, lives in a spreadsheet only the founder can make talk. It gets updated on weekends, kept current in the founder's head more than on paper, and the outside accountant only ever sees a compressed annual version. This arrangement works perfectly as long as the founder stays at the wheel. It falls apart the moment a buyer asks, with the founder out of the room, why a particular margin dropped three points last year.

I regularly hear the objection that the fiduciary already handles the numbers, so adding a finance function would mean paying twice for the same thing. That confuses two different jobs. An outside accountant closes the books and defends a tax return; that person does not build an eighteen-month forecast, does not break margin down by customer to answer the question every buyer asks about the quality of recurring revenue, and is, most of the time, only engaged for the current fiscal year. Getting the numbers ready before a sale takes monthly discipline held across several fiscal years, not a tidy annual close performed once the process has already started.

A second, equally common objection: hire a CFO right before selling, as a signal of seriousness aimed at the buyer. The intention is sound; the timing isn't. Due diligence typically reaches back three fiscal years, sometimes further. A CFO who joined six months earlier can present clean current figures but cannot personally vouch for the year before their own arrival, the very year where the margin moved. Buyers know this, and the gap tends to show up, almost mechanically, as a price discount or as extra seller warranties. Building a finance function that holds without the founder follows the same calendar logic as building a leadership team that holds without the founder: it is counted in tens of thousands of francs and eighteen to thirty-six months, not weeks.

Picture a thirty-person subcontractor whose founder can recite, from memory, the profitability of each of the company's five largest customers but has never written that calculation down anywhere else. The day a buyer asks for that detail in writing, someone has to rebuild it under pressure, with the risk that what the founder says in the room and what the rushed table shows do not quite line up. That kind of gap, even a small one, costs a whole file its credibility, well beyond the single accounting line in question.

What a solid finance function changes isn't only technical. It's owner dependency itself that shrinks: monthly reporting the founder can explain, but that someone else can also defend; a forecast that survives questions asked without the founder in the room; cash tracked continuously rather than reconstructed on demand. None of this shows up on a pitch deck. It shows up in how quickly and how easily the file answers, week after week, a buyer who is specifically probing for where the founder remains irreplaceable.

Training a successor to run the company is necessary. But as long as no one besides you can explain, with figures to back it up, why your company makes or loses money where it does, you have prepared only half a succession. The other half, the function a buyer examines first, still lives entirely in your head.