In the pack: ChatGPT, Claude & Gemini Prompts for Finance and Accounting Professionals
Rolling Forecast Update Memo
Prompt
Previous full-year forecast: {{PREVIOUS_FORECAST}}
Year-to-date actuals: {{YTD_ACTUALS}}
New remaining-months estimate and the assumptions behind it: {{NEW_ESTIMATE}}
What changed since last time: {{CHANGES}}
Write a memo with:
1. A bridge from the previous forecast to the new one, with each change shown as an amount, the reason, and a label (timing, permanent, one-off). Recalculate the bridge and confirm it adds up.
2. A comparison of the new forecast to budget with the arithmetic displayed.
3. Three assumptions the outlook is most sensitive to, with the effect of each moving by a stated amount.
4. Actions the business could take if the downside occurs.
Rules: use only my numbers, don't smooth gaps with invented figures, label any estimate as an estimate, and put a "needs confirming" list at the end. Name the reporting basis you assume.
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About this prompt
“Rolling Forecast Update Memo” is a free prompt for ChatGPT in the Business category, 151 words long, added to The Prompt Index on October 28, 2026 by The Prompt Index. Copy it with the button above, paste it into ChatGPT or any other AI chat assistant, and send it.
It has 4 placeholders to fill in first:
{{PREVIOUS_FORECAST}}, {{YTD_ACTUALS}}, {{NEW_ESTIMATE}}, {{CHANGES}}.
Use the “Customize this prompt” fields to personalise it before you copy.
Recommended models: ChatGPT, Claude, Gemini.
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