The Business Depends Too Much on One Customer or Channel

Revenue looks steady month after month. But when one client, one platform, or one referral source disappears, most of the business goes with it. This is concentration risk.

What this usually means

A single customer, marketplace, ad platform, or referral partner is responsible for most of the revenue. The business is not standing on many legs.

Why it happens

A large early client kept growing while others stayed small.
One platform (marketplace, app store, ad network) drives most orders.
Marketing has been switched off because "there is already enough work."
Pricing power is weak — the big client sets the terms.

Numbers to check

Share of revenue from the top 1, 3, and 5 customers.
Share of revenue by channel (direct, marketplace, referrals, ads).
How long it would take to replace the top customer, in months.
Gross margin per channel — some channels look big but earn little.

Typical warning signs

Over 30–40% of revenue from a single customer or channel.
Terms are dictated by the customer, not negotiated.
You avoid raising prices out of fear of losing the account.

Simple fictional example

A design studio earns $8,000 a month, but $5,500 comes from one long-term client. When that client pauses projects for two months, revenue drops by nearly 70% overnight while fixed costs stay the same.

What to calculate next

Stress-test the business with the Business Health Score and model a revenue drop in the Cash Flow calculator.

Need to calculate this? Visit SME Finance Helper.