Burn multiple is how many dollars a startup burns to add one dollar of net new annual recurring revenue. You calculate it as net cash burned divided by net new ARR over the same period. Under 1.0x is great, 1.0x to 2.0x is fine for most stages, and above 3.0x is a warning that growth is far too expensive.
Coined by David Sacks, the burn multiple is the single cleanest read on capital efficiency, which is why it sits next to the SaaS magic number and CAC payback period in every investor update. This guide covers the formula, benchmarks by stage, and why it beats growth rate alone. Burn multiple tells you how efficient your spend is; startup runway tells you how many months that spend lets you survive.
What Is the Burn Multiple?
The burn multiple measures capital efficiency: how much cash a company consumes for every dollar of new recurring revenue it generates. A lower number means you are converting investor money into durable revenue efficiently; a higher number means you are spending a lot to grow a little.
Its power is that it is comprehensive. Where the magic number only looks at sales and marketing spend, the burn multiple captures total burn - engineering, G&A, everything. It asks the blunt question investors care about most: how much money does it cost this company to grow?
How Do You Calculate the Burn Multiple?
- Burn multiple = Net burn / Net new ARR
Net burn is the cash you consumed in the period (cash out minus cash in). Net new ARR is the change in annual recurring revenue over the same period, after churn and contraction. Measure both over the same window - a quarter or a year - and use net figures on both sides so churn is not hidden.
Burn Multiple Worked Example
| Input | Value |
|---|---|
| Net cash burned this year | $8,000,000 |
| ARR at start of year | $5,000,000 |
| ARR at end of year | $11,000,000 |
| Net new ARR | $6,000,000 |
Burn multiple = $8,000,000 / $6,000,000 = 1.33x. That means the company burned $1.33 to add each $1 of new ARR - a solid, fundable result for a growth-stage startup.
What Is a Good Burn Multiple? (Benchmarks)
David Sacks published a simple grading scale that has become the standard reference:
| Burn multiple | Rating |
|---|---|
| Under 1.0x | Amazing |
| 1.0x to 1.5x | Great |
| 1.5x to 2.0x | Good |
| 2.0x to 3.0x | Suspect |
| Over 3.0x | Bad |
Tolerance shifts with stage. Early companies (seed to Series A) get more slack because fixed costs are spread over a small revenue base, so a burn multiple of 2x can be acceptable. As you scale, investors expect it to fall toward 1x or below - the trend line matters as much as the absolute number.
Burn Multiple vs Growth Rate: Why Efficiency Wins
A startup can post a spectacular growth rate and still be a bad business if it is buying that growth at any cost. The burn multiple exists precisely to catch that. Two companies both growing ARR 100%:
| Company A | Company B | |
|---|---|---|
| Net new ARR | $5M | $5M |
| Net burn | $4M | $15M |
| Burn multiple | 0.8x | 3.0x |
Same growth, wildly different quality. Company A is building an efficient engine; Company B is renting growth with cash and will hit a wall when funding tightens. Growth rate alone would have called them equals.
How Do You Improve Your Burn Multiple?
- Protect net new ARR by cutting churn. Because it uses net ARR, reducing churn and lifting net revenue retention improves the multiple without spending a dollar more.
- Cut burn that does not produce revenue. Trim spend that is not tied to acquisition or retention before touching the growth engine.
- Raise go-to-market efficiency. A better magic number and shorter CAC payback flow straight through to a lower burn multiple.
- Pull revenue forward. Annual prepay and expansion revenue add ARR without proportional new burn.
Because it ties directly to how long your cash lasts, track it alongside your runway before fundraising and the wider set of metrics investors want.
TL;DR
- Burn multiple = net burn / net new ARR. It measures how much cash you spend to add a dollar of recurring revenue.
- Under 1.0x is amazing, 1.0x to 2.0x is great-to-good, 2.0x to 3.0x is suspect, over 3.0x is bad.
- Early-stage startups get more slack; investors expect the multiple to fall toward 1x as you scale.
- It beats growth rate alone because two companies growing at the same rate can have wildly different capital efficiency.
- Improve it by cutting churn, trimming non-revenue burn, raising go-to-market efficiency, and pulling revenue forward.
Frequently Asked Questions
What Is a Good Burn Multiple?
Using David Sacks's scale, under 1.0x is amazing, 1.0x to 1.5x is great, 1.5x to 2.0x is good, 2.0x to 3.0x is suspect, and over 3.0x is bad. Early-stage startups can justify a higher multiple because fixed costs sit on a small revenue base, but investors expect the number to trend toward 1x or below as the company scales.
How Do You Calculate the Burn Multiple?
Divide net cash burned by net new ARR over the same period. Net burn is cash out minus cash in; net new ARR is the change in annual recurring revenue after churn and contraction. Using net figures on both sides is important so that churn is not hidden inside a flattering gross number.
What Is the Difference Between the Burn Multiple and the Magic Number?
The magic number only looks at sales and marketing spend against new ARR, so it measures go-to-market efficiency. The burn multiple uses total company burn - including engineering and G&A - against net new ARR, so it measures overall capital efficiency. The burn multiple is the more comprehensive, whole-company view.
Why Is the Burn Multiple Better Than Growth Rate?
Growth rate tells you how fast revenue is rising but nothing about what that growth costs. Two companies growing ARR at the same rate can have very different burn multiples - one spending 0.8x and the other 3.0x per dollar of new revenue. The burn multiple exposes whether growth is efficient or simply bought with cash.
Does the Burn Multiple Change by Funding Stage?
Yes. Seed and Series A companies are given more tolerance because their fixed costs are spread across a small revenue base, so a multiple around 2x can be acceptable. As a company reaches growth and late stage, investors expect the multiple to compress toward 1x or below, and a rising multiple at scale is a red flag.
How to Improve Your Burn Multiple
Improvement starts with efficiency, not with cutting blindly. Grow net new ARR faster per dollar by concentrating spend on the channels and roles that prove they return, because a lower multiple comes from better output, not just a smaller fire. The lever is allocation, not austerity.
Shorten the path from spend to revenue. A dollar spent this quarter should show in ARR within a defined window, so tie the investment to a measurable outcome and review it, because a multiple that drifts hides where the cash went. The linked view is what lets you act instead of hope.
Common Misreads of the Metric
The first misread is treating a high multiple as permanent. Early-stage companies often run hot before efficiency kicks in, so judge the number against stage and trajectory, not against a fixed rule. The honest read compares you to peers at the same point, not to a mature company.
The second is gaming it by delaying needed spend. Skipping sales or product to flatter the multiple hurts the business more than the pretty ratio helps, so invest where it returns and report the tradeoff. The metric serves the strategy, not the other way around, and a number bought by under-investing is a loss.
Benchmarking Against Peers
Use benchmarks as a question, not a verdict. A multiple above the norm prompts "why," and the answer is usually stage or strategy, so read the comparison against your plan before changing course. The benchmark is context that flags a conversation, not a command to cut.
Track the trend more than the snapshot. A multiple that falls quarter over quarter shows the business is learning to spend better, and that direction is what investors reward. The movement, shown honestly, tells the story a single figure cannot.