Run a one-variable sensitivity test
Calculate and explain a switching value for a key business-case assumption.
A service redesign costs $300,000. The base case assumes a 30 percent repeat-call reduction worth $210,000 per year for two years. The case breaks even when annual benefit falls to $126,000. Move the uncertain assumption until value changes sign; then govern that assumption. The weak move is to show best, base, and worst cases without saying what assumption flips the recommendation. Leaders get scenarios but not a control point. Step 1 Base reduction = 30 percent; annual benefit = $210,000. This implies each percentage point of repeat-call reduction is worth $7,000 annually. Step 2 Break-even annual benefit = $126,000. Finance…
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