Unit Economics Calculator
Les fondateurs de startups, directeurs financiers et équipes de croissance utilisent ce prompt pour calculer leurs métriques d'économies unitaires, les comparer aux standards sectoriels et identifier l'action à plus fort levier pour améliorer l'efficacité du capital. Il est essentiel pour la préparation pré-levée, la due diligence investisseur et les décisions de stratégie de croissance.
Prompts
You are a venture-backed startup CFO and growth finance advisor helping [COMPANY NAME], a [BUSINESS MODEL] business in [INDUSTRY], calculate, interpret, and improve its unit economics. All figures are in [CURRENCY]. Provide the following inputs: - Customer Acquisition Cost (CAC): [CAC] — total sales and marketing spend divided by new customers acquired in the period - Average Revenue per Customer per Month: [ARPC] - Gross Margin per Customer (as % of revenue): [GROSS MARGIN %] - Monthly Customer Churn Rate: [MONTHLY CHURN %] - Average contract length or customer tenure: [AVERAGE TENURE] - Sales and marketing spend for the period: [S&M SPEND] - Number of new customers acquired in the period: [NEW CUSTOMERS] Perform a complete unit economics analysis: 1. **Core Metrics Calculation** Calculate and show all formulas and working: - Lifetime Value (LTV): (ARPC × Gross Margin %) ÷ Monthly Churn Rate - LTV:CAC Ratio - CAC Payback Period (in months): CAC ÷ (ARPC × Gross Margin %) - Gross Margin per Customer per Month - Net Revenue Retention (if expansion data is available) 2. **Industry Benchmark Comparison** Benchmark the calculated metrics against standard ranges for [BUSINESS MODEL] companies: - LTV:CAC: flag if below 3x (weak), 3–5x (healthy), above 5x (strong) - CAC Payback: flag if above 18 months (high risk), 12–18 months (acceptable), under 12 months (efficient) - Gross Margin: benchmark against typical [BUSINESS MODEL] and [INDUSTRY] ranges State whether each metric is below benchmark, at benchmark, or above benchmark. 3. **Highest-Impact Improvement Lever** Analyze four levers for improving LTV:CAC and identify which single lever has the greatest impact given the current metrics: - Reduce churn by 20% (recalculate LTV) - Increase gross margin by 5 percentage points (recalculate LTV) - Reduce CAC by 20% (recalculate LTV:CAC and payback) - Increase ARPC by 15% through upsell or price increase (recalculate LTV) Show the revised metrics for each lever in a comparison table and recommend the highest-impact single action. 4. **Unit Economics Health Summary** Write a 100-word plain-language assessment of the business's unit economics health, what the current metrics imply about scalability and capital efficiency, and the single most important action the team should prioritize.
Variables du Prompt
Remplacez chaque placeholder par vos informations spécifiques :
[COMPANY NAME][BUSINESS MODEL][INDUSTRY][CURRENCY][CAC][ARPC][GROSS MARGIN %][MONTHLY CHURN %][AVERAGE TENURE][S&M SPEND][NEW CUSTOMERS]Ce que vous obtiendrez
Un tableau complet de calcul des économies unitaires avec formules et développements pour LTV, ratio LTV:CAC, délai de récupération du CAC et marge brute par client; une comparaison aux benchmarks sectoriels avec indicateurs supérieur/à la norme/inférieur; un tableau comparatif des quatre leviers d'amélioration; et un résumé de 100 mots en langage clair avec une recommandation prioritaire.
💡 Conseil d'Expert
Utilisez le CAC par cohorte plutôt que le CAC agrégé quand c'est possible — le CAC agrégé mélange le coût d'acquisition de clients issus de différents canaux et périodes, masquant si vos acquisitions récentes sont plus ou moins efficaces. Les chiffres par cohorte donnent aux investisseurs une vision plus claire de la trajectoire.
Outils IA Compatibles
Claude
Best for the full analysis including benchmark interpretation and plain-language health summary. Provide all metrics as a structured list. Claude identifies which lever is highest-impact given the specific combination of metrics and writes investor-ready commentary.
ChatGPT
Use Code Interpreter for precise LTV, LTV:CAC, and payback calculations, especially when modeling multiple improvement levers simultaneously. GPT-4 or later provides the financial reasoning quality needed for benchmark comparisons.
Gemini
Useful for startups with metrics tracked in Google Sheets. Gemini can pull live CAC, churn, and ARPC data from your analytics spreadsheet and produce unit economics calculations and benchmark flags inline.
Microsoft Copilot
Effective when unit economics inputs are tracked in Excel dashboards. Copilot can calculate LTV, payback period, and LTV:CAC from existing cells and annotate results with benchmark comparisons without disrupting the dashboard layout.