What Is Burn Multiple, Actually?
Burn multiple is David Sacks' deceptively simple efficiency metric. It measures dollars burned per dollar of annual recurring revenue (ARR) created.
Formula: Monthly Net Burn ÷ Net New ARR That Month
Example: You spend ₹50 lakhs monthly. You add ₹20 lakhs in net new ARR. Your burn multiple is 2.5. You're burning ₹2.50 to create ₹1 in sustainable revenue.
Why this matters: it captures efficiency and growth in one number. Revenue growth alone lies. Burn alone is depressing. Burn multiple tells the truth.
Why Investors Obsess Over This
When Sam Altman reviews startups, he looks at three things: product-market fit signals, founder quality, and unit economics. Burn multiple is the unit economics shortcut.
Here's why:
- Below 0.75: You're printing money. Investors assume you can scale indefinitely.
- 0.75–1.5: Healthy. You're converting customer spend to sustainable revenue.
- 1.5–3.0: Acceptable but risky. You need strong growth to justify the burn.
- Above 3.0: Red flag. You're spending ₹3+ to make ₹1. VCs will ask hard questions.
Indian SaaS founders often rationalize high burn multiples with "high growth." Investors know better. High growth with 4.0 burn multiple is a Ponzi scheme with a runway.
How to Calculate Yours
Step 1: Define your accounting month clearly (calendar vs. fiscal).
Step 2: Calculate net burn.
- Total expenses that month – Total revenue that month = Net Burn.
- Include all costs: payroll, servers, marketing, office, contractor fees.
- This should match your bank movements (roughly).
Step 3: Calculate net new ARR.
- ARR at month-end minus ARR at month-start = Net New ARR.
- Include expansions (existing customers paying more).
- Subtract churned ARR.
- Only count predictable recurring revenue, not one-time deals.
Step 4: Divide.
- Net Burn ÷ Net New ARR = Burn Multiple.
Real example from an Indian B2B SaaS founder:
- October net burn: ₹40 lakhs.
- October net new ARR: ₹15 lakhs.
- Burn multiple: 2.67.
- Runway at this rate: ~18 months (assuming flat burn).
The Non-Obvious Insight
Most founders optimize the numerator (reduce burn). Smart ones optimize the denominator (increase ARR).
Reducing burn by ₹5 lakhs helps. Increasing net new ARR by ₹5 lakhs helps twice as much because it impacts both the numerator and denominator.
Why? Because sales momentum compounds. Better product → higher close rates → faster contract expansion → lower churn → higher net new ARR. A single product tweak can shift your burn multiple by 0.3–0.5 points in three months.
Framework: Three Levers to Improve Burn Multiple
Lever 1: Reduce Cost Per Dollar of ARR Created
- Track CAC (customer acquisition cost) ÷ contract value.
- Benchmark: top 10% of YC companies have CAC of 0.5–0.8x first-year ARR.
- Action: If your CAC is 2.5x ARR, your sales engine is broken. Fix positioning, qualification, or pricing before scaling spend.
Lever 2: Increase Gross Margin
- Higher margin = more revenue reaches bottom line = lower burn multiple.
- If you're at 60% gross margin and competitors are at 75%, you have a cost structure problem (often in delivery or infrastructure).
- Action: Document every ₹1 of revenue. Where does it go? COGS should never creep above 40% for SaaS.
Lever 3: Compress Sales Cycle & Increase Win Rate
- Faster sales = ARR generated earlier = lower burn multiple that month.
- Example: If your median sales cycle is 4 months, accelerate to 6 weeks. That one month of speed = 30% more ARR recognized.
- Action: Track "days from first meeting to first payment." YC's benchmark: <45 days for PLG, <90 for enterprise.
The Messy Middle Problem
Scott Belsky writes that startups get stuck in "the messy middle"—past product-market fit, pre-scale. Burn multiple is where founders realize they're stuck.
You have product-market fit (customer love, retention). But unit economics don't work. You're spending ₹3 to make ₹1 because you're still finding the right channel, customer segment, or pricing.
The honest move: Stop raising. Spend 8–12 weeks optimizing burn multiple to <1.5. Then raise from a position of strength. Investors will give you more favorable terms.
Indian founders often skip this step. They raise at 3.5 burn multiple, get 18 months of runway, and burn through it hoping things improve. They don't. Improve first, then scale.
Actionable: Your Next Step
1. Calculate your burn multiple for last 3 months. Spreadsheet, not gut feeling.
2. Benchmark it. Ask your investors or peers. If above 2.0, flag it internally.
3. Identify your biggest cost sink. Sales? Infrastructure? Overhead? Cut or eliminate ruthlessly.
4. Set a target. Aim for <1.5 by Series B readiness. Measure weekly.
5. Report it monthly. Make burn multiple as sacred as MRR growth. Board meetings, investor updates, founder discussions.
Burn multiple isn't fancy. It's brutally honest. Use it.