Burn Multiple
Burn multiple is net burn divided by net new revenue — a single-number test of how efficiently your growth engine converts cash into ARR.
Burn Multiple
Net cash burn divided by net new revenue — how many euros you burn to add one euro of new ARR.
Burn multiple is a capital-efficiency metric popularised by David Sacks. You take net burn (cash out minus cash in) for a period and divide it by net new ARR added in the same period — or, for DTC stores, net new revenue. The lower the number, the more efficient your growth engine. Below 1x is elite, 1x–2x is healthy, 2x–3x is suspect, and anything above 3x suggests you're paying too much for each euro of new revenue. Unlike CAC payback or LTV:CAC, burn multiple captures the whole business — paid spend, headcount, fulfilment, returns — in a single ratio.
David Sacks introduced burn multiple in 2020 as a blunt antidote to vanity growth. Two stores can both grow 100% year-on-year, but if one burns €1 to earn €1 of new revenue and the other burns €4, they are not the same business — and a downturn will expose the difference fast.
For online retail the framing shifts slightly. SaaS uses net new ARR; a Shopify apparel brand uses net new revenue (typically trailing-twelve-month or quarterly). The interpretation is identical: how much capital did you consume to install a euro of new top-line?
Burn Multiple = Net Burn / Net New Revenue
Net Burn
Net cash burn
Cash outflows minus cash inflows for the period. Negative operating cash flow, essentially.
Net New Revenue
Net new revenue
Revenue added in the period minus revenue lost to churn/refunds. For DTC, use trailing revenue delta; for SaaS, net new ARR.
A Shopify apparel brand burned €400k in Q3 and grew quarterly revenue from €1.8M to €2.0M — €200k of net new revenue.
Net burn (Q3): €400,000
Net new revenue (Q3): €200,000
→ Burn multiple = 2.0x
The brand spent €2 of cash for every €1 of new quarterly revenue. That's in the 'suspect' band — workable while the market is rewarding growth, but the first thing a board will challenge in a tighter funding climate.
Two practical notes. First, pick a period and stick to it — quarterly is the standard for operating reviews. Second, use net burn, not gross spend; subsidies, tax credits, and inventory financing all count as cash in.
Burn multiple bands and what each one signals
| Burn multiple | Band | What it usually means |
|---|---|---|
| < 1x | Elite | Growth is largely self-funding. Rare; usually strong organic + repeat revenue. |
| 1x – 1.5x | Great | Healthy paid-acquisition economics, disciplined opex. Investable in any market. |
| 1.5x – 2x | Good | Workable. Acquisition is profitable but overhead is eating into efficiency. |
| 2x – 3x | Suspect | Growth engine is leaky. Audit paid channels, returns, and discount stacking. |
| > 3x | Bad | You're buying revenue. Each new euro costs more than it returns; runway shrinks fast. |
Burn multiple is a diagnostic, not a target. A 2.5x reading isn't automatically fixable by cutting ads — it might be a fulfilment problem, a discount problem, or a retention problem. Pair it with CAC payback and contribution margin to find the actual leak, and treat it as one input inside broader efficient growth frameworks rather than a standalone verdict.
Burn multiple FAQ
Below 1x is elite, 1x–2x is healthy, and above 3x is a problem. For DTC brands raising capital, investors typically want to see a clear path to under 2x within the next 12 months.
CAC payback measures how long it takes one customer to repay their acquisition cost. Burn multiple measures the whole business — opex, headcount, fulfilment, refunds — against all new revenue. You can have great CAC payback and a bad burn multiple if overhead is bloated.
SaaS uses net new ARR. DTC stores without subscription revenue should use net new revenue — the period-over-period delta in top-line, after refunds and returns. Pick one definition and apply it consistently.
Quarterly is the operating standard. Monthly is too noisy — a single big inventory order or ad-spend pull-forward distorts the ratio. Annual is too lagging to be actionable.
If you're cash-flow positive, net burn is negative and the ratio becomes meaningless or negative. At that point switch to growth efficiency metrics like the Rule of 40 or contribution-margin growth.
LTV:CAC looks forward at unit economics; burn multiple looks backward at realised cash efficiency. A strong LTV:CAC should eventually show up as an improving burn multiple — if it doesn't, your opex or churn assumptions are wrong.
Rarely. Cutting paid spend reduces both numerator and denominator, so the ratio often barely moves. Real improvements come from raising contribution margin, lifting repeat-purchase rate, or reducing fixed overhead.
Healthy brands in the €1M–€15M revenue band typically sit between 1.5x and 2.5x. Anything below 1.5x usually indicates strong organic demand or a large repeat-customer base.
Yes — and that's a known limitation for product businesses. If you stock up for Q4, Q3 burn looks worse than it is. Some operators normalise by treating inventory investment separately from operating burn.
David Sacks of Craft Ventures formalised the metric in a 2020 essay. He argued investors needed a single, hard-to-game number that captured how much capital a company was consuming to produce growth — independent of accounting choices.
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