Lean OperationsvsBurn Rate
Both are essential business concepts — but they measure very different things.
The Concept
Lean operations systematically eliminates waste — any activity that consumes resources without creating customer value. Toyota identified 7 types of waste: overproduction, waiting, transport, over-processing, inventory, motion, and defects. Lean companies can operate at 50-70% lower cost than non-lean competitors while delivering higher quality.
Burn rate is the speed at which your company spends cash reserves before generating positive cash flow. Gross burn is total monthly spending; net burn is spending minus revenue. A startup with $50K/month expenses and $20K/month revenue has a $30K net burn rate and needs $30K from savings every month to survive. VCs use burn rate to calculate runway and assess financial discipline — a startup burning $200K/month with $10K MRR will be scrutinized much harder than one burning $200K with $150K MRR.
The Trap
Teams apply 'lean' as an excuse to under-invest. Real lean isn't about cutting corners — it's about cutting WASTE. Eliminating your QA team isn't lean, it's reckless. Automating repetitive QA tests so your team focuses on complex edge cases? That's lean.
The trap is tracking burn rate from your P&L instead of your bank account. Accrual accounting can show $50K net burn while your bank is actually losing $80K/month because of delayed client payments (accounts receivable), prepaid annual subscriptions expiring, and vendor invoices coming due simultaneously. Many founders have been shocked to discover their 'calculated' 12-month runway was actually 6 months when measured by actual cash in the bank.
The Action
Start with a value stream map: list every step from customer request to delivery. For each step, ask 'Would the customer pay for this?' If no, it's a candidate for elimination. Target: eliminate 20% of non-value-adding activities each quarter until your process is 80%+ value-adding.
Calculate both metrics and track them separately: Gross Burn = Total Cash Out per Month. Net Burn = Cash Out − Cash In. Then compute Runway = Cash Balance ÷ Net Burn. Set alerts: if runway drops below 6 months, initiate cost cuts or fundraising immediately. Review burn rate weekly (not monthly) — cash surprises kill more startups than bad products.
Formulas
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