Private browser-based calculator
See customer concentration before it becomes a surprise.
Owner tool 02
Enter annual revenue and the five largest customer relationships. The calculator stays on this device and stores nothing.
Open calculatorDirectional view
Watch concentration
Revenue mixShare of total revenue
Suggested focus
Pair key-account continuity with deliberate diversification.
Document renewal risk, relationship ownership, and delivery dependencies for the largest accounts. Build pipeline in segments that reduce concentration without weakening service quality.
Directional thresholds used here are for discussion only: balanced below 15% for the largest customer and below 35% for the top three; watch above either level; concentrated above 25% for the largest customer or 50% for the top three. Industry economics, contracts, margins, and customer quality still matter. This is not a valuation or professional opinion.
Put the output to work02 / 03
Map relationship ownership
Identify who holds each critical relationship and whether account knowledge is shared beyond one person.
Stress-test renewal timing
Review contract dates, switching risks, service dependencies, and recovery options before they become urgent.
Diversify with discipline
Favor customers and channels that fit the operating model instead of chasing revenue that creates new fragility.
Continue the review
Concentration is one signal. Readiness is the system.
Use the Transition Readiness Index to connect customer resilience with leadership, financial visibility, repeatable processes, growth quality, and owner clarity.