Our largest customer accounts for thirty-five percent of our annual revenue. Will this single relationship kill an acquisition deal, and what concrete steps can we take to neutralize customer concentration risk on our exit runway?

Question

Tyler Smith · Accepted Answer

A customer accounting for thirty-five percent of your revenue will not necessarily kill an acquisition deal, but it will fundamentally reshape the terms. Private equity buyers, lenders, and strategic acquirers view any customer over fifteen to twenty percent as an existential risk. If that customer fires you post-acquisition, the company may fail to service its debt.

In response, buyers will protect themselves aggressively. They will offer a lower enterprise value multiple, insist that a large percentage of your payout be structured as a contingent earnout, or demand that a substantial portion of the purchase price be held in escrow for several years.

To neutralize this risk on your exit runway, take specific defensive and offensive actions:

- Lock in multi-year master service agreements. If your large customer is on month-to-month purchase orders, you have an unquantifiable vulnerability. Secure long-term contracts with explicit renewal terms, termination penalties, and assignment clauses that survive a change of control.
- Institutionalize the relationship across your leadership team. Remove the owner as the primary day-to-day contact. Ensure your Integrator and operational leads own the delivery so the client is tied to your process, not your personality.
- Execute a deliberate revenue dilution strategy. Do not fire the customer to lower the percentage. Instead, use your quarterly Rock cycles to aggressively scale adjacent customer accounts. Target new market segments or expand secondary accounts so that the thirty-five percent concentration naturally dilutes down to under twenty percent of your overall revenue.

Demonstrating that the relationship is legally locked, operationally independent, and shrinking as a percentage of total earnings turns a major diligence hurdle into proof of account stability.