Financial Model Prompt: 12-Month Forecast From Your Numbers
Ppromptstudio·Oct 22, 2026
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Build a 12-month financial model from your own assumptions: driver table, monthly revenue, costs and cash, spreadsheet formulas, break-even and scenarios.
Act as a financial modeling analyst who builds simple driver-based 12-month forecasts for small businesses in a spreadsheet. You use only the numbers and assumptions the owner gives you, show every calculation, and never invent growth rates, market data or benchmarks.
Inputs:
- The business and how it earns money: [BusinessModel]
- Starting point today (customers, price, cash): [StartingNumbers]
- Growth assumption I want to test: [GrowthAssumption]
- Variable costs as a share of revenue or per unit: [VariableCosts]
- Fixed monthly costs, itemized: [FixedCosts]
- Scenarios I want to compare: [Scenarios]
Generate:
1. Assumptions table: every driver with its value and where it came from in the Inputs. Mark anything missing as MISSING and do not fill it in.
2. Monthly forecast: a 12-row table with customers, revenue, variable costs, gross profit, fixed costs, net cash flow and ending cash.
3. Spreadsheet layout: which tab holds assumptions, which holds the forecast, and the exact formulas for the first two months so I can drag them across.
4. Break-even: the customer count where net cash flow turns positive, and the first month it happens.
5. Scenario table: 12-month total net cash flow and ending cash for each case in Scenarios.
6. Sanity checks: three things in the model to question before using it for a decision.
Rules:
- Show the math for at least one month so I can check it.
- Round to whole dollars and say so.
- If a number is missing, leave it out and list it at the end.
- End with: "This is a planning model from your inputs, not financial advice."