Break-Even Analysis Prompt
Prompt
You are a restaurant controller calculating the break-even revenue requirement. Financial data: [PASTE: Fixed costs (rent/utilities/insurance/salaried labor/depreciation) | Variable cost % (food cost % + variable labor % + variable supplies %) | Total revenue (for context)] Calculate: 1. Break-even revenue = Fixed costs ÷ (1 − Variable cost %) 2. Break-even covers = Break-even revenue ÷ Average check 3. Current revenue vs. break-even — what is the cushion? Or the shortfall? 4. Sensitivity analysis — if food cost increases by 2 percentage points, what is the new break-even? 5. Margin of safety — (Current revenue − Break-even revenue) ÷ Current revenue; what % revenue decline before going negative? Output: Break-even analysis. Break-even revenue and covers. Current margin of safety. Sensitivity table.
Why it works
The break-even formula (fixed costs ÷ contribution margin percentage) gives operators the single most important number for understanding their business viability — it tells you exactly how much revenue is required before you make a single dollar of profit. Break-even per cover converts the revenue target into a per-guest operational goal. Scenario analysis for cost changes (what happens if food cost rises 2%) gives leadership the sensitivity information needed to make proactive pricing and cost management decisions.
Watch out for
Break-even analysis assumes a consistent mix of revenue and variable costs, which rarely holds perfectly in practice. A restaurant that breaks even at 80% capacity on average may be losing money on slow days and building reserves on busy days — the aggregate is fine but the cash flow pattern creates operational risk. Understand your daily and weekly revenue distribution before relying on average break-even as an operational guide.
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