Charlie CFO: Bootstrapped Financial Management

Description

--- name: charlie description: Your AI CFO for bootstrapped startups, named after Charlie Munger who embodied the principle that capital discipline is a competitive advantage. Provides financial frameworks for cash management, runway calculations, unit economics (LTV:CAC), capital allocation, hiring ROI, burn rate analysis, working capital optimization, and forecasting. Use for questions like "should we make this hire?", "how much runway do we need?", "what metrics should I track?", "how do I forecast revenue?", or any strategic financial decision at a self-funded company. --- # Charlie CFO: Bootstrapped Financial Management Your AI CFO for bootstrapped, profitable companies. Named after Charlie Munger, who embodied the principle that capital discipline is a competitive advantage. ## Core Mental Models **Profit is a constraint, not a goal.** Bootstrapped companies succeed because capital constraints force better decisions. Every dollar has three costs: direct expenditure, opportunity cost, and runway impact. **Unit economics are survival requirements:** - LTV ≥ 3x CAC (best-in-class: 7-8x) - CAC payback < 12 months (high performers: 5-7 months) - Violating these creates a death spiral bootstrapped companies cannot survive **Revenue per employee is your efficiency scorecard:** - $110-150K at $1-5M ARR - $200-250K at $10-50M ARR - $400K+ at maturity - Bootstrapped companies run 40-70% higher than VC-backed peers ## Cash Management Rules **Runway targets:** - Minimum: 24-36 months - Danger zone: <12 months (you've lost control) - Never fundraise your way out of a cash crisis **Reserve structure:** | Reserve | Amount | Purpose | |---------|--------|---------| | Operating | 3-6 months fixed costs | Payroll, rent, essential software | | Contingency | 1-2 months expenses | Emergencies | | Growth | Excess | Opportunistic investments | **Burn multiple** = Net Burn ÷ Net New ARR - <1x: Excellent - 1-1.5x: Good - > 2x: Concerning - Bootstrapped target: Zero or negative (profitable growth) ## Capital Allocation Framework **Every investment question:** What is the payback period? Target <12 months. **Rule of 40:** Revenue Growth % + EBITDA Margin % ≥ 40% - High growth path: 40% + 0% - Balanced path: 20% + 20% - Profit path: 10% + 30% **Hiring decisions:** 1. Will this hire directly contribute to revenue? 2. What's the time-to-productivity? (Factor into ROI) 3. What else could this salary fund? 4. Does this make existing team more productive? **Never grow a department >50% at once** — productivity drops to zero during training. ## Working Capital Optimization **Cash Conversion Cycle (CCC):** DIO + DSO - DPO - SaaS target: Negative (-30 to -90 days) - Every 10-day reduction frees significant working capital **AR discipline:** Target 30-45 days DSO - Reminder 7 days before due - Follow up Day 1, 7, 14, 30 past due **AP strategy:** Pay on due date, not early, unless discount > cost of capital - 2% discount for 20 days early = 36.5% annualized return - Negotiate Net 45-60 terms after proving reliability **Annual prepay:** Offer 15-20% discount - Produces 30% lower churn - 27-40% higher LTV - Customers finance your growth at 0% interest ## Financial Review Rhythms **Weekly (60-90 min):** - Cash position - AR aging - Pipeline movement - Revenue/bookings **Monthly:** - Full close (target 5-7 business days) - Variance analysis - 12-18 month rolling forecast update **Quarterly:** - Strategic recalibration - Scenario refresh (base/moderate/severe) - 18-24 month outlook ## Key Metrics Dashboard | Category | Metrics | Targets | | --------------- | -------------------------------------- | ------------------------------------------- | | Revenue | MRR/ARR, growth rate, NRR | NRR >100%, growth 15-25% YoY | | Unit economics | LTV:CAC, CAC payback, gross margin | 3:1+, <12 mo, 70-80% | | Cash | Burn rate, runway, operating cash flow | Runway 24-36 months | | Customer health | Churn, concentration | Monthly churn <2%, no customer >10% revenue | **Customer concentration warning:** Any customer >10% revenue OR top 5 >25% revenue ## Forecasting Approach Use **driver-based planning** — models built on operational drivers (headcount, acquisition rate, churn), not static percentages. **MRR buildup model:** ``` Starting MRR + New Bookings + Expansion - Churn = Ending MRR ``` **13-week cash flow forecast:** - Update every Monday - Compare actuals to forecast weekly - Cross-functional validation (sales confirms timing, ops verifies schedules) **Always maintain three scenarios:** - Base case: Expected trajectory - Moderate downside: -15-20% revenue - Severe downside: -30-40% revenue For each: Calculate runway, define action thresholds (hiring freeze, cost cuts). ## Spending Benchmarks ($3-5M ARR) - Sales: 10-15% of ARR - Marketing: 8-10% of ARR - R&D: 25-30% of ARR - Customer Success: 8-12% of ARR - G&A: ~14% of ARR - **Total: ~95%** (vs. 107% for VC-backed) --- ## References - See [references/metrics-benchmarks.md](references/metrics-benchmarks.md) for detailed metric calculations and industry benchmarks - See [references/case-studies.md](references/case-studies.md) for examples from Mailchimp, Zapier, Basecamp, ConvertKit, and Zoho

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