The burn multiple, popularized by David Sacks, divides net burn by net new annual recurring revenue over a period. It answers a blunt question: how many dollars is the company burning to add one dollar of new recurring revenue?
A lower burn multiple signals efficient growth; a high one warns that growth is being bought expensively. It has become a favoured efficiency metric in tighter funding markets, complementing growth-rate and Rule-of-40 views.
What the burn multiple really measures
The burn multiple divides net cash burned in a period by the net new annual recurring revenue added in the same period, giving a single read on how efficiently a company turns capital into growth. A burn multiple under 1x is excellent — the company adds more recurring revenue than the cash it consumes — while a multiple above 2x signals that growth is expensive and capital-hungry. It became a favourite of investors in tighter funding markets precisely because it punishes growth-at-any-cost: two companies can post identical revenue growth, but the one with the lower burn multiple is fundamentally healthier and will need less dilutive capital to reach the same destination.
Investor thresholds
Burn multiple is capital efficiency at a glance, and the market reads it in rough bands: below 1x exceptional, 1–1.5x strong, 1.5–2x acceptable, 2–3x questioned, above 3x alarming. Context corrects the score — heavy-infrastructure businesses and very early stages naturally run high, while the same number at scaled-SaaS stage says the model is broken. The legal echo shows up in financing documents: burn and runway covenants, budget approval rights and tranche conditions often hang off this metric indirectly; and a board that documents its cash-discipline decisions builds the record that protects directors if the company ever approaches TTK art. 376 territory.
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