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Business case with explicit assumptions

Build a simple business case with every assumption stated and a sensitivity check.

DeepSeek Business strategyRuleStack original

Written for DeepSeek Chat (DeepThink reasoning mode) · Updated 2026-10-17

Note: Review and test before use. Provided as is, without warranty. See Terms.

Prompt

Build a business case for [initiative].
List every assumption as a number with a source or "estimate". Calculate cost, revenue or savings, payback period, and ROI over [3] years. Then show how the result changes if the 2 most uncertain assumptions are 30% worse.

Replace everything in [square brackets] with your own details.

Settings & parameters

DeepThink on

Variations

Compare two initiatives side by side.
Build-vs-buy decision.

Tips

Listing assumptions makes the case easy to challenge.
Replace estimates with real numbers before presenting.

More: all DeepSeek prompts · all business strategy prompts · prompt library

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