How do I track burn multiple alongside efficiency metrics?
Burn multiple = Net Burn / Net New ARR. Coined by David Sacks (Craft Ventures) in his April 2020 Substack post 'The Burn Multiple' (https://sacks.substack.com/p/the-burn-multiple), it is now the dominant capital-efficiency metric on growth-stage SaaS boards. It answers one question: how many dollars are you torching per dollar of recurring revenue you create? For a deeper primer on the metric in isolation, see /knowledge/q420; this entry treats burn multiple as one node in a four-metric efficiency lattice alongside Magic Number (/knowledge/q418), Rule of 40 (/knowledge/q417), and NRR (/knowledge/q96).
The exact calculation (Sacks' definition):
Burn Multiple = Net Burn (this period) / Net New ARR (this period)
- Net Burn = cash out minus cash in. Pull this from the cash flow statement, NOT P&L operating expenses. Exclude financing activities (debt, equity raises) and one-time M&A outflows.
- Net New ARR = ending ARR minus beginning ARR. Net of churn and contraction. A $200K new logo offset by $200K churn = $0 net new ARR, regardless of what your sales team booked.
The most common founder error: using gross new ARR or bookings instead of net. KeyBanc's 2025 Private SaaS Survey (https://www.keybanccm.com/insights/saas-survey) found 31% of private SaaS companies report ARR inconsistently with their auditors' definition -- which means roughly a third of self-reported burn multiples in pitch decks are wrong.
Sacks' published rating table (the canonical reference cited by every Tier-1 SaaS investor):
| Burn Multiple | Rating |
|---|---|
| Under 1x | Amazing |
| 1x to 1.5x | Great |
| 1.5x to 2x | Good |
| 2x to 3x | Suspect |
| Over 3x | Bad |
Why it beats CAC payback as a board metric:
CAC payback only measures sales and marketing efficiency. Burn multiple captures *all* spend including R&D, G&A, and overhead. If your CAC payback is 14 months (healthy) but your burn multiple is 3.5x, you are overhiring outside the revenue function. The two metrics together diagnose where the leak is. Pair with Magic Number (/knowledge/q418) for sales productivity and the Rule of 40 (/knowledge/q99) for the full growth-vs-margin trade-off; together these four metrics form the diagnostic panel every Series B+ board reviews monthly.
Real 2026 benchmark data (primary sources):
- BVP State of the Cloud 2026 (https://www.bvp.com/atlas/state-of-the-cloud-2026): top-quartile growth-stage SaaS at $25M-$100M ARR runs 1.1x median burn multiple; bottom quartile at the same revenue scale runs 3.2x.
- ICONIQ Growth Topline 2025 (https://www.iconiqcapital.com/insights/state-of-saas): median growth-stage burn multiple improved from 2.4x in 2023 to 1.8x in 2025 -- the post-ZIRP efficiency mandate measurably worked.
- 2024-2025 IPO cohort (Crunchbase, https://news.crunchbase.com/): public SaaS at IPO ran 0.9x median in the year prior to filing. Companies that shut down 2023-2025 ran 4.7x in their final year.
- Sacks' original benchmark (https://sacks.substack.com/p/the-burn-multiple): under 1x amazing, 1-1.5x great, 1.5-2x good, 2-3x suspect, over 3x bad.
Bear Case -- five places burn multiple lies to you:
- Deferred revenue distortion. A company that books a 3-year prepaid contract collects cash up front. Net burn looks tiny (or negative) that month, burn multiple looks magical, but the underlying P&L is still bleeding. Both Mosaic and ICONIQ flag this in their 2026 reports. Counter: always reconcile burn multiple back to GAAP operating loss; if cash-basis burn is 0.8x but accrual operating loss implies 2.2x, trust the accrual view.
- One-time cuts mask the trend. A founder lays off 20% in Q1, burn multiple drops from 2.8x to 1.4x in Q2. Looks great. But you also slashed pipeline-generation capacity, so net new ARR will collapse in Q3-Q4 and burn multiple will rebound to 3.5x. Counter: report both 'pre-restructure' and 'post-restructure' rolling-12 burn multiples for at least 4 quarters after any RIF.
- Aggressive bookings-to-ARR conversion. Some teams count multi-year deals at full TCV in net new ARR. Wrong. Use annualized contract value only. KeyBanc's 2025 finding (31% misreporting) lives here. Counter: lock the ARR definition in your audit committee charter and have the auditor sign off quarterly.
- The growth excuse. 'We are at 200% YoY growth, of course burn multiple is 2.5x.' At under $5M ARR, fine. At over $25M ARR with 2.5x, you are not growth-stage anymore -- you are a structurally inefficient business that has not found leverage. BVP's 2026 data shows top-decile companies hit 1.5x by $20M ARR. Counter: stop excusing the multiple by stage; benchmark against same-revenue-band peers, not same-growth-rate peers.
- Currency and collections timing. International expansion or annual-bill cycles distort a single month. A January collection wave from EMEA annual renewals can make burn multiple look 0.4x in January and 3.0x in February. Counter: always view 3-month and 6-month rolling alongside the monthly snapshot.
Tracking framework that actually works:
- Monthly close, not quarterly. Calculate within 10 business days of month-end. Use trailing-3-month to smooth lumpy enterprise deals; single-month for fast-moving PLG.
- Cohort by GTM motion. Inbound vs. outbound vs. partner-sourced. If outbound is 4x and inbound is 0.6x, kill or rebuild outbound -- do not average them.
- Headcount-adjusted view. Plot burn multiple against the headcount additions from the prior 2 quarters. The metric spikes 1-2 quarters after a hiring binge.
- Threshold automation. Tripwires in your finance stack (Mosaic, Pigment, or a Sheet): burn multiple over 2x for two consecutive months triggers a mandatory plan review with the CEO and CFO.
The CFO's one-page action:
If burn multiple is over 2x: cut opex 15-25% within 60 days, or accept that your next round will be flat-to-down. If 1.5-2x: freeze hiring outside of quota-carrying roles until the metric improves for 2 consecutive months. If under 1.5x: invest, but tag every new hire to a specific revenue or efficiency outcome.
Related reading in this library: /knowledge/q420 (burn multiple primer), /knowledge/q418 (Magic Number), /knowledge/q417 (Rule of 40 explained), /knowledge/q99 (Rule of 40 mechanics), /knowledge/q96 (NRR benchmarks for Series B).
TAGS: burn-multiple, capital-efficiency, david-sacks, saas-finance, board-metrics, bear-case