How Scenario Analysis Is Structured in a Financial Model

A compliant scenario analysis contains three internally consistent scenarios: a base case, an upside case, and a downside case. Internal consistency means that the cost structure in the downside scenario reflects a plausible management response to lower revenue, not a simple percentage reduction applied to the base case. If revenue is thirty percent lower in the downside, headcount costs, marketing spend, and infrastructure costs must reflect what a real management team would actually do in that situation. A scenario that reduces revenue but holds costs constant is not a scenario. It is an arithmetic exercise.

The scenario logic must be documented. An investor who asks why the downside scenario assumes a certain headcount level or a specific gross margin should receive a documented answer, not a verbal explanation. The assumption that separates the scenarios from each other is the most important thing to document, because it is the first thing a sophisticated investor will interrogate.

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Tool: Financial Model Blueprint