Customer concentration risk occurs when a business relies on a small number of customers for a significant proportion of its revenue. When buying a business, this matters because losing one major customer could substantially affect profitability and cash flow. Buyers should assess how revenue is distributed across customers and whether important relationships are likely to continue after the acquisition.
Consider three key factors:
- Revenue concentration: Review how much revenue comes from the business's largest customers. A high percentage generated by one or two clients may indicate increased financial risk.
- Customer relationships: Check the length of customer relationships, contract terms, renewal dates and whether key clients are likely to remain following a change of ownership.
- Revenue stability: Assess whether the business has recurring income, a diversified customer base and opportunities to reduce dependence on major customers.
For example, if one customer accounts for 40% of annual revenue, losing that relationship could have a significant impact on the business's financial performance.
High customer concentration does not automatically make a business unsuitable for acquisition, but it should be considered during due diligence and valuation.
Read more: Due Diligence Checklist for Buying a Business
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