How important is customer concentration?

June 21, 2023
by a searcher from INSEAD in New York, NY, USA
I've come across a deal that looks great in all other ways (healthy EBITDA margin, growing industry, fair multiple, low capital intensity, etc.), however one major red flag is that 3 customers make up 95% of the company's revenue.
The seller has assured me that the reason for this is that these customers fill their capacity and that they have requests from other customers they can't serve but stick with these 3 customers out of loyalty as they have been with the business for many years. He also mentioned that these customers have close relationships with the managers who will stay on for at least two more years.
Has anyone successfully bought a business with such high customer concentration or would this be too risky? Any thoughts on how to mitigate or further due diligence the risk?
from Rutgers in New York, NY, USA
From a risk perspective, consider if you lost 1-2 of the customers, would your liabilities still be paid (ie, are most of the costs variable with revenue?)
From a revenue perspective, if you lost customers, how long would it take to replace the revenue stream? Would you be able to charge similar prices or would you need to lower prices to attract new customers?
The valuation of the business should be tied to the potential, but also the risk. You don't want to pay $X for a company that will be valued significantly less in 2 years. So would say its fair to negotiate down for the risk you’re taking on. With that in mind, would also check stability (ratings, credit, size) of these customers. The risk is not only that they leave and go to your competitor, but also if they can no longer make payments or go out if business. Then ~30% of the business is gone. Would form your view on the valuation of the business before negotiating with him. The likelihood of each risk should come into play.
from University of Missouri in St. Louis, MO, USA