Why it matters:

These issues rarely stop a deal but they almost always change the economics. When risks are identified during diligence, buyers respond by adjusting valuation, structuring contingencies, or shifting risk back to the seller. The earlier these items are addressed, the more control and leverage the seller retains in both price and terms.

5 mistakes we see too often and how to prevent them

1. Waiting too long to prepare financials

One of the most common patterns we see is sellers deciding to go to market and only then realizing their financials aren’t ready for scrutiny. Having clean books and defensible numbers is key. 

What to do differently: Start preparing at least 12–24 months in advance. Normalize earnings, separate personal or one-time expenses, and ensure reporting tells a clear, consistent story. The smoother the quality of earnings process, the more leverage you retain.

2. Underestimating the importance of operational documentation

Many owners run highly successful businesses, but much of the knowledge lives in their heads or with a few key employees. When it comes time to sell, that lack of documentation becomes a real concern for buyers. We’ve seen buyers hesitate or introduce earnouts simply because they don’t have formal processes. If customer relationships, pricing decisions, or vendor management rely too heavily on the owner, the business is often considered less transferable.

What to do differently: Document key processes, workflows, and decision-making frameworks. The goal is to demonstrate that the business can operate predictably without you at the center of every decision.

3. Overlooking customer concentration risks

Customer concentration is one of the first things buyers analyze and one of the most common issues we see underestimated by sellers. In multiple deals we’ve seen, sellers believed strong relationships would offset concentration risk. In reality, buyers focus on the numbers: if a small number of customers drive a large portion of revenue, the perceived risk increases, often leading to valuation discounts, escrow requirements, or earnouts tied specifically to customer retention.

What to do differently: If concentration exists, start addressing it early. Diversify your customer base where possible, or at minimum, strengthen contracts and demonstrate stability in those relationships. Even showing a trend toward diversification can help shift the narrative.

4. Misjudging timing based on market conditions alone

It’s tempting to try to “time the market,” but deals are far more often impacted by company-specific readiness than external conditions. We’ve worked with sellers who rushed to market during what they believed was a favorable environment, only to encounter issues that could have been resolved with a bit more preparation. Conversely, we’ve seen well-prepared businesses command strong outcomes even in less favorable markets.

In practice, buyers reward preparedness and predictability far more than timing. A “market-ready” business can capture opportunity windows. An unprepared one often misses them entirely.

What to do differently: Focus on controllables. Market conditions matter, but readiness matters more. A well-prepared business can move quickly when the timing is right (without compromising value due to preventable issues).

5. Not building the right advisory team early enough

A consistent theme across transactions is that sellers often bring in advisors too late, in many cases after key decisions have already been made or issues have surfaced.

In our experience, early involvement allows advisors to identify risks, shape the narrative, and position the business more effectively. Waiting too long can limit options and lead to reactive decision-making during the deal process.

What to do differently: Engage your advisory team early: accounting, tax, legal, and M&A professionals. The upfront investment in planning often translates directly into a smoother process and better economics at close. 

A quick client example: 

We worked with a founder who received strong inbound acquisition interest and decided to move quickly to market. During diligence, several issues emerged simultaneously: financials required normalization, a single customer represented more than 30% of revenue without contractual protection, and key operating processes were undocumented and heavily dependent on the owner.

While the transaction ultimately closed, the economics shifted meaningfully. Adjusted EBITDA was reduced during diligence, a portion of the purchase price was restructured into an earnout tied to customer retention, and the seller was required to remain involved in the business longer than originally anticipated.

These changes didn’t result from market conditions; they reflected risks that buyers identified and priced in real time.

The most successful transactions are both well-timed and well-prepared. Sellers who proactively address risks, normalize financial performance, and define their narrative before going to market consistently achieve stronger valuations and more favorable deal structures.