Acquisitions

Customer Concentration in Deals

Understand customer concentration as an acquisition risk: why one dominant customer makes a business fragile, why the sale itself can trigger their departure, and why buyers discount for it.

  • Beginner
  • 17 min total
  • 13 chapters

What decision this helps you make: How to assess and price customer concentration when buying a business, and how to protect against a dominant customer leaving.

What this topic is

Customer concentration in deals is the degree to which a target business's revenue depends on one or a few customers. A common red flag is any single customer above ~10% of revenue (20%+ is serious). It makes a business fragile, and the sale itself can trigger the customer's departure, so buyers discount heavily for it.

Why it matters

If a dominant customer leaves, the cash flow you paid for craters, and they're more likely to leave because of the sale, especially if their loyalty was to the departing owner. Assessing and pricing customer concentration is essential to not overpaying for fragile revenue.

Who should learn it

Anyone buying a business who needs to judge how durable and diversified its revenue really is.

What you will understand

  • Understand customer concentration and the ~10–20% red flags
  • See why concentration makes a business fragile
  • See why the sale itself can trigger a dominant customer's departure
  • Price and protect against concentration (discount, contingent structure)

Prerequisites

Common misconception

"A business with one huge, loyal customer is a great, stable business." Often the opposite: it's fragile. If that one customer leaves, the revenue craters. And they're more likely to leave right after a sale, especially if they were loyal to the departing owner, not the business. A big customer looks like strength but is a concentration risk buyers discount heavily for.