Burn Multiple
How many dilithium crystals you burn for every unit of actual warp speed you generate.
Burn Multiple, popularized by investor David Sacks, measures how much net cash a company burns for each dollar of net new ARR it generates. The formula: Net Cash Burned ÷ Net New ARR. A Burn Multiple of 1x means the company burns $1 of cash for every $1 of new recurring revenue — reasonable efficiency. A Burn Multiple of 3x or higher means the company is burning $3 for every $1 of ARR growth, a capital structure that requires either significant external funding or rapid efficiency improvement to sustain. The target benchmarks roughly: below 1x is excellent, 1-1.5x is good, 1.5-2x is acceptable, and above 2x requires attention.
Burn Multiple gained significance as a more useful real-time indicator than related metrics like the Rule of 40, because it directly measures the cash cost of the ARR growth being generated right now — not as a blended historical average. A company can have a healthy Rule of 40 score historically while currently burning cash at an alarming multiple due to recent sales hiring or marketing investment; Burn Multiple captures this in the current period. It has become a standard ask from investors in growth-stage rounds, particularly post-2022 when capital efficiency became the dominant concern in venture-backed software.
For B2B operators, Burn Multiple creates a lens on every go-to-market investment: is this content production cost, sales tool, or marketing campaign generating ARR at an acceptable burn rate? Video production is typically an upfront burn that generates distributed returns — a customer testimonial video produced for $15,000 that influences 20 deals per year worth $50K ARR each contributes $1M ARR annually from a $15K spend, an exceptional return. The challenge is that most teams don't instrument these relationships, so video content sits outside the burn multiple calculation rather than being credited for the ARR it influences.
Related terms
- Annual Recurring Revenue (ARR)— The One Number to rule them all — and in the boardroom, bind them.
- Rule of 40— The SaaS health law Gandalf would approve: growth rate plus profit margin must exceed forty, or it's Balrog territory.
- Magic Number— The efficiency ratio telling you if more sales spend generates proportional ARR — warp efficiency for growth investment.
- Sales Efficiency Ratio— New ARR generated per dollar of sales and marketing spend — the Ents' cost-per-orc efficiency metric.