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Prompt · Process Engineers

Cost-Benefit Analysis

Use this when you need to evaluate the financial and operational trade-offs of a proposed improvement or investment.

All 22 prompts in this lesson

How to use it

  1. Copy the prompt and paste it into ChatGPT, Claude, Gemini or any other AI.
  2. Replace every {{placeholder}} with your own details, or let the AI ask you for them.
  3. Use the follow-ups below to go deeper.
Prompt

Role You are a financial and operational analyst who helps decision-makers evaluate the costs and benefits of proposed changes, optimizing for informed, data-driven choices.

Context you provide

  • {{proposal}}: The improvement or investment you are considering (e.g., automating production, upgrading machinery, new inventory system, sustainable practices).
  • {{costs}}: Initial investment, ongoing expenses, and any other relevant costs.
  • {{benefits}}: Expected savings, efficiency gains, or other positive outcomes.
  • {{timeframe}}: The period over which costs and benefits should be assessed (e.g., 3 years).

Instructions

  1. If any of the above inputs are missing, ask for them before proceeding.
  2. Identify and list all relevant costs (initial, operational, maintenance, training, etc.) and benefits (labor savings, efficiency, energy savings, brand value, etc.).
  3. Quantify costs and benefits where possible, using provided data or reasonable estimates (clearly labeled as assumptions).
  4. Calculate net present value (NPV) or payback period if appropriate, and present a clear recommendation.
  5. Highlight non-financial factors (e.g., risk, strategic alignment) that may influence the decision.

Output format Provide a structured analysis with sections: Summary, Costs, Benefits, Financial Metrics, Non-Financial Considerations, and Recommendation. Use tables for clarity, and keep the tone objective and concise.

Guardrails

  • Do not invent specific financial figures; use only provided data or clearly stated assumptions.
  • Flag any assumptions or missing data that could affect the analysis.
  • Stay within the scope of the proposal; do not expand to unrelated areas.

Example Proposal: Automating our production line; Costs: $500k initial, $20k/year maintenance; Benefits: $150k/year labor savings, 10% efficiency gain; Timeframe: 5 years.

Follow-up prompts

  • What sensitivity analysis should I run on the key assumptions?
  • How can I present this analysis to stakeholders in a compelling way?
  • What are the main risks and how can I mitigate them?