Burn Multiple

Definition

The Burn Multiple is a capital efficiency metric created by David Sacks (Craft Ventures) that measures how much cash a company burns to generate each dollar of net new annual recurring revenue (ARR). It answers the core VC question: "How efficiently is this company converting capital into durable revenue growth?" A Burn Multiple below 1.0x is excellent, 1.0-1.5x is good, 1.5-2.0x is acceptable for early-stage, and above 2.0x is a red flag. [src1]

Key Properties

Formula: Net Burn / Net New ARR (lower is better) [src1]
David Sacks benchmarks: <1.0x excellent, 1.0-1.5x good, 1.5-2.0x suspect, >2.0x bad [src3]
Stage targets: Seed <2.5x, Series A 1.0-1.5x, Series B 0.7-1.2x, Series C+ 0.3-0.8x
Industry average: ~1.6x across all stages from seed to IPO [src2]
Net Burn definition: Total cash outflows minus total cash inflows (excluding new fundraising)

Constraints

Requires positive net new ARR — if ARR is flat or declining, the metric is undefined [src1]
Early-stage (<$1M ARR) companies naturally have high burn multiples; later-stage benchmarks don't apply
One-time expenses (office buildout, M&A) inflate burn artificially — normalize before comparing [src4]
Penalizes R&D-heavy companies investing in platform shifts that pay off in future quarters
Does not capture revenue quality — expansion ARR costs less than new-logo ARR [src2]

Framework Selection Decision Tree

START — User needs to evaluate SaaS efficiency
├── What dimension of efficiency?
│   ├── Total capital efficiency (burn vs. revenue growth)
│   │   └── Burn Multiple ← YOU ARE HERE
│   ├── Sales & marketing efficiency only
│   │   └── SaaS Magic Number
│   ├── Growth + profitability balance (public/late-stage)
│   │   └── Bessemer Efficiency Score / Rule of 40
│   └── Per-customer unit economics
│       └── CAC Payback Period
├── What stage is the company?
│   ├── Pre-revenue / Seed → Burn Multiple (works pre-revenue)
│   ├── Series A-C → Burn Multiple (primary VC metric)
│   └── Late-stage / Public → Efficiency Score or Rule of 40
└── Who is the audience?
    ├── VCs / Board → Burn Multiple (their preferred metric)
    ├── CFO / Finance → All metrics in combination
    └── GTM leadership → SaaS Magic Number

Application Checklist

Step 1: Calculate net burn

Inputs needed: Total cash at period start, total cash at period end, any new capital raised
Output: Net cash consumed (Starting Cash - Ending Cash - New Capital Raised)
Constraint: Must exclude new fundraising proceeds. Include ALL cash outflows. [src1]

Step 2: Calculate net new ARR

Inputs needed: ARR at period end, ARR at period start
Output: Net new ARR (including expansion, minus churn/contraction)
Constraint: Must be positive. If negative, the company has a retention problem. [src4]

Step 3: Compute the ratio

Inputs needed: Net burn and net new ARR
Output: Burn Multiple (e.g., 1.4x)
Constraint: Normalize for one-time expenses. Use stage-appropriate benchmarks. [src2]

Step 4: Trend analysis

Inputs needed: Burn Multiple across 4+ quarters
Output: Efficiency trajectory and recommended actions
Constraint: Rising burn multiple + decelerating growth is the most dangerous combination. [src3]

Anti-Patterns

Wrong: Applying Series B benchmarks to Seed-stage companies

A seed company burning $2M to generate $500K in net new ARR (4.0x) may be perfectly on track. [src3]

Correct: Use stage-appropriate benchmarks

Seed: <2.5x, Series A: 1.0-1.5x, Series B: 0.7-1.2x, Series C+: 0.3-0.8x. Expect improvement with each round. [src1]

Wrong: Ignoring revenue quality in the denominator

Two companies both adding $5M in net new ARR may look identical, but expansion ARR costs far less than new-logo ARR. [src2]

Correct: Decompose net new ARR

Break down into new-logo, expansion, and churned ARR to reveal whether efficiency gains are real. [src1]

Wrong: Cutting burn to improve the ratio

Slashing R&D and marketing improves burn multiple short-term but destroys future growth capacity. [src4]

Correct: Grow the denominator

Focus on growing net new ARR faster, not just cutting costs. Improve burn multiple through efficiency, not austerity. [src2]

Common Misconceptions

Misconception: Burn Multiple and Magic Number measure the same thing.
Reality: Magic Number only measures S&M efficiency. Burn Multiple measures total capital efficiency including R&D, G&A, and infrastructure. [src1]

Misconception: A Burn Multiple above 2.0x means the company should cut immediately.
Reality: At seed stage, >2.0x is normal. Interpretation depends on stage, growth rate, and trajectory. [src3]

Misconception: Burn Multiple works for profitable companies.
Reality: If a company generates cash (negative net burn), the metric loses meaning. Use Bessemer Efficiency Score or Rule of 40 instead. [src4]

Comparison with Similar Concepts

Concept	Key Difference	When to Use
Burn Multiple	Total cash efficiency (all burn vs. net new ARR)	VC due diligence, board reporting, growth-stage
SaaS Magic Number	S&M-only efficiency (revenue per S&M dollar)	GTM optimization for sales-led SaaS
Bessemer Efficiency Score	Growth rate + FCF margin	Public/late-stage companies with $25M+ ARR
Rule of 40	Revenue growth % + profit margin % ≥ 40	Quick health check for mature SaaS

When This Matters

Fetch this when a user asks about SaaS capital efficiency, how VCs evaluate burn rates, or how to assess whether a startup is spending cash efficiently relative to its growth. Critical for fundraising preparation, board meetings, and comparing portfolio companies.