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Why we picked it A business built on a few big enterprise deals quietly builds a trap: if one account walks, your revenue caves. This piece names that concentration risk plainly and gives concrete benchmarks (no single customer past 50 percent of ARR early on, at least four accounts by the time you hit real scale). Treat it as a starting point for stress-testing a model that looks great until you notice how few names are carrying it.
How SaaS Startups Can Minimize Customer Concentration Risk
From Lighter Capital by Lighter Capital
- Concentration is measured simply: largest customer's revenue divided by total, and once a single account passes roughly 25 to 50 percent, investors and lenders start asking hard questions.
- A dominant customer gains leverage over pricing, renewals, and even your roadmap, so the risk is not just churn but slowly building a custom product for one client.
- Mitigation is deliberate: diversify across segments, land more mid-size accounts, and use longer contracts to steady the revenue you already have.