Burn Multiple: Formula, Benchmarks & How to Improve It

What is burn multiple?

Burn multiple is the amount of cash a startup burns to add one dollar of net new annual recurring revenue. The formula: Burn Multiple = Net Burn ÷ Net New ARR, measured over the same period. A company that burns $500K in a quarter while adding $250K of net new ARR has a burn multiple of 2 — it pays two dollars for every recurring dollar it adds.

The metric was popularized by investor David Sacks as a single, hard-to-game measure of capital efficiency. Growth rate tells you how fast the engine spins; burn multiple tells you how much fuel it drinks to do it. Two companies with identical growth can have wildly different burn multiples — and very different odds of surviving a tight funding market.

The burn multiple formula, step by step

Three inputs, one division. First, compute net burn for the period: total cash out minus total cash in from operations — the same number that drives your runway, excluding financing events like a funding round. Second, compute net new ARR: new ARR from new customers, plus expansion, minus churn and contraction. Third, divide net burn by net new ARR.

A worked example: over two quarters a SaaS startup burns $600K net. In the same window it closes $350K of new ARR, expands existing accounts by $80K, and loses $130K to churn — net new ARR is $300K. Burn multiple = 600 ÷ 300 = 2.0. Note what churn did there: without it the multiple would have been 1.4. Burn multiple punishes leaky buckets automatically, which is exactly why investors trust it.

What is a good burn multiple? The benchmark scale

The scale Sacks proposed has become the industry shorthand for venture-stage SaaS: under 1 is amazing, 1 to 1.5 is great, 1.5 to 2 is good, 2 to 3 is mediocre, and above 3 is bad. In other words, burning $3 or more for every $1 of net new ARR signals that growth is being bought, not earned.

Stage context matters. A seed-stage company inventing its go-to-market can justifiably run above 2 for a while; a Series B company should not. The trend line matters more than any single reading: a multiple falling from 2.5 toward 1.5 as you scale tells an efficiency story, while one drifting upward says each new dollar of growth is getting more expensive — the classic sign of a saturating channel or a leaking funnel.

Why investors lean on it

Since the 2022 reset, efficiency metrics have carried as much weight as growth metrics in diligence, and burn multiple sits at the top of that list — a16z and most growth funds now put it next to growth rate as the first two numbers they read. The reason is that it compresses judgment into one figure: hiring discipline, pricing power, sales efficiency, and churn all leave fingerprints on it.

It is also hard to dress up. Vanity growth — discounted deals, one-time services revenue, paid pilots that never convert — either doesn't count as ARR or comes back as churn, and the multiple degrades. A founder who can say 'we added $1M of net new ARR on $900K of burn' has said more about the business in one sentence than most decks manage in ten slides.

Burn multiple vs. burn rate vs. runway

The three metrics answer different questions. Burn rate: how much cash leaves per month? Runway: how many months until the cash is gone? Burn multiple: what does the burn actually buy? A company can have a comfortable runway and a terrible burn multiple — plenty of time, spent inefficiently — or an excellent multiple with a dangerously short runway.

Read them together as a dashboard: runway sets the deadline, burn rate sets the pace, and burn multiple grades the quality of the spending. When the three disagree, burn multiple usually holds the decision: cutting burn that has a multiple under 1 is cutting profitable growth, while protecting burn with a multiple over 3 is protecting a leak.

How to improve your burn multiple

The formula has only two levers, and the denominator is usually the better one. On the ARR side: fix churn first — every saved dollar of churn adds a full dollar of net new ARR with zero extra burn; then look at pricing and expansion, the cheapest growth most startups leave on the table. On the burn side: cut spend that produces neither learning nor pipeline, starting with unfocused marketing channels and pre-emptive hires.

The trap to avoid is cutting your way to a good ratio: slashing sales and marketing improves the multiple this quarter and starves growth two quarters out. The goal is not the lowest possible multiple — it's the lowest multiple at a growth rate that still justifies the round you'll raise next.

Common measurement mistakes

Four errors distort the metric most often. Counting gross new ARR instead of net — churn is the whole point. Measuring over a single month, where one big deal or one lost logo swings the number wildly; use a quarter or two. Including one-time revenue in ARR, which flatters the denominator with dollars that won't recur. And leaving financing costs or one-off expenses in net burn, which punishes the numerator for noise.

For pre-revenue companies the honest answer is that burn multiple doesn't apply yet — there is no denominator. Until first recurring revenue lands, runway and learning speed are the metrics that matter; the multiple takes over once there's an engine to grade.

Experiencing burn multiple in a simulation

In Founder Runway, every decision that raises burn — a hire, a marketing push, an office — either converts into MRR growth within a few turns or it doesn't, and you can read your own burn multiple straight off the Cash and MRR trends. The 'spend more to grow faster' reflex gets tested against actual conversion, turn by turn.

It's the fastest way to internalize the difference between burn that buys growth and burn that buys time — without paying for the lesson with real runway.

Conclusion

Burn multiple = net burn ÷ net new ARR: under 1.5 is strong, above 3 is a warning, and the trend beats any single reading. Track it quarterly next to burn rate and runway, fix churn before chasing new spend, and be able to say in one sentence what your burn is buying. The free burn rate calculator on this site computes your monthly burn and burn multiple straight from period bank balances.