
From the team at Flowjam · Published July 2026
Burn multiple = net burn ÷ net new ARR, for the same period. Lower is better; under 1.5x is the bar.
The burn multiple, coined by David Sacks at Craft Ventures, is the cleanest one-number test of capital efficiency there is. The formula:
Both over the same period. Net burn is cash out minus cash in; net new ARR is new ARR minus churned ARR. A burn multiple of 1.5x means you spent $1.50 to add $1 of recurring revenue. It cuts through the noise of growth-rate bragging: a company growing 100% while burning 4x its net new ARR is not efficient, it is buying growth, and the burn multiple exposes it instantly.
Scale from David Sacks (Craft Ventures), now standard in Bessemer and Iconiq reporting.
Efficiency expectations rise as you scale. What is fine at seed is a red flag at Series B.
2026 medians aggregated from Runway, SaaS Capital and CFO Advisors benchmark reports. AI-native SaaS is running 0.8x-1.2x, ahead of traditional SaaS at most stages.
There are only two levers. You can cut net burn (spend less), or you can add more net new ARR per dollar spent. Founders reach for the first because it feels decisive, but slashing spend often slows growth and barely moves the ratio. The durable win is the second: get more recurring revenue out of the money you already spend, and the fastest path there is a lower cost to acquire each customer.
What is a burn multiple?
Burn multiple = net burn divided by net new ARR. It answers one question: how many dollars are you burning to add one dollar of recurring revenue? A 1.5x burn multiple means you spend $1.50 to generate $1 of new ARR. It was introduced by David Sacks of Craft Ventures and is now the standard shorthand VCs use to judge capital efficiency.
How do you calculate burn multiple?
Take your net burn (cash out minus cash in) for a period and divide it by your net new ARR (new ARR minus churned ARR) for the same period. If you burned $2M last quarter and added $1.3M of net new ARR, your burn multiple is 2M / 1.3M = 1.54x.
What is a good burn multiple in 2026?
Below 1.5x is the broad investor benchmark; below 1.0x is top quartile. By stage: seed runs 2.5-3.4x, Series A sits around 1.2x, growth-stage targets ~1.4x, and companies past $100M ARR should be at or below 1.0x. Above 2.5x at any stage beyond seed is a red flag.
Burn multiple vs the Rule of 40, which matters more?
They answer different questions. Burn multiple measures efficiency of a single dollar of growth (how much you burn per new ARR dollar); the Rule of 40 balances growth rate against profit margin. In the 2026 efficiency era investors look at both, but burn multiple has become the faster gut-check because it is harder to game.
How do I improve my burn multiple?
Two levers: add more net new ARR per dollar spent (raise net revenue retention, cut CAC, shorten payback) or reduce net burn (control spend). Cutting the cost of acquiring each customer is usually the fastest, least painful lever, because it improves the numerator and the denominator at once.
Does burn multiple still matter for AI-native startups?
Yes, and it is where they win. AI-native SaaS companies are posting burn multiples of 0.8x-1.2x, ahead of traditional SaaS, because leaner teams and product-led motions add ARR with less spend. But heavy compute costs can push it the other way, so AI startups should watch it closely rather than assume efficiency.
More of your pipeline converting means more net new ARR per dollar spent, straight into a better burn multiple. A sharp product demo is one of the cheapest ways to get there.
Try Flowjam free →Related reading: the Rule of 40 · LTV:CAC ratio explained · SaaS metrics dashboard template.