We have one massive customer that represents thirty-five percent of our revenue. I cannot easily fire them, so how do I protect my valuation when preparing for an exit?

Question

Tyler Smith · Accepted Answer

Customer concentration is one of the most common valuation killers. A buyer sees that thirty-five percent concentration and immediately calculates the risk of that single client leaving post-sale. They will either discount your multiple or demand a heavy earn-out structure to shift the risk back to you.

To protect your valuation without firing your best client, you must take active steps to mitigate the risk. First, secure long-term, transferable contracts with this customer. If you can lock in multi-year agreements that survive a change of control, you significantly reduce the buyer's immediate anxiety.

Second, institutionalize the relationship. If you are the primary point of contact for this client, you are a single point of failure. Transition the day-to-day management to your leadership team so the client is loyal to your company's systems and service, not to you personally.

Third, focus your sales efforts on growing your other accounts and acquiring new clients to dilute the concentration over time. Even if you cannot easily replace the revenue, showing a clear trend of declining percentage concentration proves to the buyer that you are actively managing the exposure.