Key-Person Risk: How to Spot It in Diligence Before a Buyer Does

Clark Cotterell

Buyers find key-person risk eventually — it's one of the first things a competent diligence team looks for. The only question is whether it's found on your terms, with time to address it, or on theirs, with a lower offer attached.

What key-person risk actually looks like

It rarely shows up as a single obvious fact. It's a pattern: the owner is the only one who talks to the top three customers. Pricing decisions run through one person's judgment rather than a documented process. A single salesperson or operator holds relationships that took 15 years to build and that don't show up anywhere on an org chart. None of this looks alarming day to day — the business runs fine. It becomes a problem the moment someone asks, “What happens if this person leaves?”

Buyers ask that question directly. If the honest answer is “the business would struggle,” that's a valuation discount, a longer earnout, or a walked deal.

Reducing it before you go to market

The businesses that sell well have usually spent 12 to 24 months deliberately reducing this risk before a deal is ever discussed. That starts with documenting what the key person actually does — not job titles, but the specific relationships, decisions, and knowledge that would be hard to replace. From there, the work is delegation: bringing a second person into key customer relationships, building a pricing framework that doesn't depend on one person's judgment, and giving a capable #2 real authority, not just a title.

Where the gap can't be closed with existing staff, that's a signal to start a search rather than wait for diligence to surface the problem. A business that can point to a credible leadership bench — even a partially built one — tells a buyer a very different story than one that can only point to the owner.

Questions that surface it

Key-person risk rarely appears in documents, so it has to be found in conversation. A few questions do most of the work in management interviews:

  • If the owner took a month off with no phone, what would stop?
  • Who else has met the three largest customers in the last year?
  • When a price or a large quote needs approving, who decides, and what do they base it on?
  • Which employee leaving would worry you most, and why?

Listen for the same name in every answer. That name is the risk.

How buyers respond to it

A buyer who finds concentrated dependency does not have to walk away. They can change the terms instead: a lower headline price, more of it deferred, a longer period the seller must stay, or conditions tied to keeping specific people. Sellers and advisors who understand this in advance can choose which lever to offer, and can reduce the need for any of them by closing the gap first.

For owners, the practical route is covered in Reducing Owner Dependency. For advisors preparing a client for market, NaviTrust provides recruiting and HR support for sellers and buyers from pre-market preparation onward.

Key-person risk doesn't disappear because nobody mentions it. It gets priced in either way. The only choice is whether it gets addressed on a timeline you control.

This guide is part of NaviTrust's Resources collection — practical hiring insight for M&A advisors, buyers, lenders, and community banks. Spotting key-person risk on a deal? Get in touch with NaviTrust →

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