Burn Multiple
Burn Multiple, popularized by David Sacks in 2020, measures how much cash you burn for every $1 of new ARR you add. Formula: Burn Multiple = Net Burn ÷ Net New ARR. A Burn Multiple of 1.0 means you burned $1 to add $1 of ARR. The KnowMBA POV: in 2026, Burn Multiple has displaced 'revenue growth' as the dominant capital-efficiency lens. The 2021 era of 'growth at any cost' is dead — investors now ask 'how many dollars did you light on fire to get that growth?' before celebrating it. A company growing 100% at 5x Burn Multiple is worse than a company growing 40% at 1x.
The Trap
The trap is celebrating high revenue growth without checking the burn ratio. A company tripling ARR while burning 4x cash relative to new ARR is destroying value, not creating it — they're effectively buying revenue at $4 per $1, which only works if multiples permanently expand. They never permanently expand. The other trap: using gross new ARR instead of net (which inflates the denominator and makes burn look more efficient than it is).
What to Do
Calculate Burn Multiple monthly: Net Burn ÷ Net New ARR added that month (annualized). Aim for <2 in early growth stage, <1 at scale. Above 3 is a fundability red flag in 2026 capital markets. If your Burn Multiple is rising, you're scaling burn faster than ARR — the trajectory matters more than the absolute number. Sacks' rule: 'burn multiple is the truth-teller; revenue growth is the storyteller.'
Formula
In Practice
David Sacks coined 'Burn Multiple' in his Craft Ventures essay (2020) precisely because he was tired of founders pitching revenue growth without disclosing capital intensity. He cited examples of Series B companies pitching 200% YoY growth that turned out to have 5x Burn Multiples — meaning every dollar of new ARR cost $5 to acquire. Post-2022, public SaaS companies that historically had Burn Multiples above 3 (Snowflake at certain points, many growth-at-all-cost names) saw their multiples compress as the market rerated capital efficiency. Sacks' framework became standard board-level diligence by 2024.
Pro Tips
- 01
Sacks' tier guidance: <1.0 = 'amazing' (capital-efficient leader), 1-1.5 = 'great', 1.5-2 = 'good', 2-3 = 'suspect', >3 = 'bad' — investors will discount your story.
- 02
Burn Multiple naturally compresses with scale (operating leverage kicks in), so a Series A company with Burn Multiple of 2 might be excellent while a Series D with same number is failing.
- 03
If your Burn Multiple is climbing while ARR grows, you have a unit-economics problem disguised as a growth story. Stop and diagnose before raising more money — investors will discover it during diligence anyway.
Myth vs Reality
Myth
“Lower Burn Multiple is always better”
Reality
A Burn Multiple below 0.5 might mean you're under-investing in growth. The optimal range is 1.0-1.5 for venture-stage — efficient enough to be sustainable, aggressive enough to capture market share before competitors.
Myth
“Burn Multiple replaces LTV/CAC”
Reality
They measure different things. LTV/CAC measures unit-level customer profitability over their lifetime. Burn Multiple measures company-level cash efficiency in adding ARR right now. You need both — they catch different problems.
Try it
Run the numbers.
Pressure-test the concept against your own knowledge — answer the challenge or try the live scenario.
Knowledge Check
Company A: $40M ARR growing 80% YoY, Burn Multiple 3.5. Company B: $40M ARR growing 50% YoY, Burn Multiple 0.9. Which is more fundable in 2026?
Industry benchmarks
Is your number good?
Calibrate against real-world tiers. Use these ranges as targets — not absolutes.
Burn Multiple (Sacks' Framework)
Venture-stage SaaS, post-2022 capital environmentAmazing
< 1.0
Great
1.0-1.5
Good
1.5-2.0
Suspect
2.0-3.0
Bad
> 3.0
Source: David Sacks / Craft Ventures (2020), refined 2023-2025
Real-world cases
Companies that lived this.
Verified narratives with the numbers that prove (or break) the concept.
David Sacks / Craft Ventures
2020-present
David Sacks (Yammer founder, Craft Ventures GP) introduced 'Burn Multiple' in a 2020 essay arguing the metric was the most honest single number for SaaS efficiency. His framework spread because it solved a real problem: founders pitched revenue growth divorced from capital intensity, and investors lacked a single comparable number. By 2023, Burn Multiple was standard in board decks, fundraising memos, and Series B+ diligence. The 2022-2024 SaaS reset — where 'efficient growth' replaced 'growth at any cost' — was framed largely through Burn Multiple.
Original Essay
2020 (Craft Ventures)
Adoption Curve
Standard by 2023
Tier Anchors
<1 amazing, >3 bad
A great metric replaces a worse one not because it's more accurate, but because it's more truth-revealing. Burn Multiple displaced revenue growth as the lead conversation because it's harder to game.
Hypothetical: 2021 Hypergrowth SaaS
2021-2024
Hypothetical: A horizontal collaboration SaaS hit $50M ARR in 2021 growing 180% YoY — and raised a Series D at $3B valuation on those numbers. What the deck didn't emphasize: their Burn Multiple was 4.2 ($210M burn for $50M ARR achievement). When the 2022 reset hit, the company had to cut 35% of staff to drop Burn Multiple to 1.8 — but in doing so, growth fell to 30%. The 2024 down round priced them at $1.1B (down 63%). They survived but the cap table was permanently impaired.
2021 ARR Growth
180% YoY
2021 Burn Multiple
4.2 (hidden in deck)
2024 Burn Multiple (post-cuts)
1.8
Valuation 2021 → 2024
$3B → $1.1B
If you raised a 2021 round on growth without disclosing Burn Multiple, the reckoning was inevitable. The companies that survived best were those who had run Burn Multiple discipline all along — not those who had to discover it in crisis.
Decision scenario
The Pre-Series-B Burn Decision
You're 14 months from Series B. Current ARR is $18M growing 90% YoY. Burn Multiple is 2.4 (suspect zone). To raise at a strong multiple, you need Burn Multiple under 1.5 by raise time. Two paths: cut burn aggressively or accelerate ARR growth.
ARR
$18M
ARR Growth YoY
90%
Burn Multiple
2.4
Quarterly Burn
$8M
Months to Series B
14
Decision 1
Cutting burn risks slowing growth (which also damages multiple). Doubling down on growth might keep Burn Multiple high if growth doesn't accelerate proportionally.
Cut burn 30% by reducing S&M spend and freezing hiring — get Burn Multiple to 1.7 fast even at the cost of growthReveal
Surgical efficiency: cut paid spend with low ROI (15% of S&M), eliminate underperforming AEs (3 of 18), invest savings in retention/expansion to drive net dollar retention from 110% to 125%. Net burn drops, but new logo growth is preserved.✓ OptimalReveal
Related concepts
Keep connecting.
The concepts that orbit this one — each one sharpens the others.
Beyond the concept
Turn Burn Multiple into a live operating decision.
Use this concept as the framing layer, then move into a diagnostic if it maps directly to a current bottleneck.
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Turn Burn Multiple into a live operating decision.
Use Burn Multiple as the framing layer, then move into diagnostics or advisory if this maps directly to a current business bottleneck.