Burn multiple is a SaaS efficiency metric that measures how much net cash a company burns for every dollar of net new annual recurring revenue (ARR) it adds. It provides a cash-efficiency lens on growth: not just how fast the business is growing, but at what cost in burned cash.
The Burn Multiple Formula
Burn Multiple = Net Cash Burned in the Period / Net New ARR Added in the Period
Net cash burned is the total cash outflow minus the total cash inflow from operations: cash spent on headcount, infrastructure, vendors, and all operating expenses, less cash collected from customers. Net new ARR is the change in annual recurring revenue during the same period, accounting for both new customer ARR added and ARR lost to churn.
Example: A company burns $3,000,000 in net cash during a quarter and adds $1,500,000 in net new ARR. Burn Multiple = $3,000,000 / $1,500,000 = 2.0x. The company is burning two dollars for every dollar of new ARR it adds.
Interpreting the Burn Multiple
David Sacks of Craft Ventures, who popularized the metric, proposed the following framework:
- Below 1x: exceptional efficiency. The company is generating more ARR than it is burning cash to acquire it. Extremely rare at growth stage, typically only seen when a business has very strong product-market fit, efficient go-to-market, or both.
- 1x-1.5x: great efficiency. For every dollar of ARR added, the company burns $1-1.50. This is the target zone for efficient growth-stage SaaS.
- 1.5x-2x: good efficiency. Acceptable but bears watching. Improvement is possible and should be pursued.
- 2x-3x: marginal. The company is burning significantly more than it is generating in new ARR. Common at very early stages when fixed costs are high relative to ARR, but concerning if persistent at later stages.
- Above 3x: very high burn. Unsustainable without continued capital infusion. The business either needs to grow much faster to dilute fixed costs or needs to reduce spending substantially.
These are not hard cutoffs. A Series A company with strong growth and early enterprise traction might sustain a 3x burn multiple temporarily while building the sales infrastructure that will improve efficiency at later stages. Context matters: the benchmark is most relevant when evaluating whether the current investment level is justified by the growth trajectory.
Burn Multiple vs. CAC Payback and Magic Number
Burn multiple, CAC payback period, and the magic number are all efficiency metrics, but they measure different things:
- CAC payback: how long it takes to recover the cost of acquiring one customer through gross margin. Measured per customer.
- Magic number: net new ARR generated per dollar of sales and marketing spend. Measures go-to-market efficiency specifically.
- Burn multiple: net cash burned per dollar of net new ARR. Measures the efficiency of the entire business — all cash burned, not just sales and marketing spend.
A company can have a good magic number (efficient sales and marketing) but a high burn multiple if it is spending heavily on R&D, customer success, infrastructure, or other non-go-to-market costs relative to its ARR growth. Burn multiple captures the full picture of cash consumed to grow.
What Drives Burn Multiple Higher
- High churn eroding the net new ARR denominator: if a company adds $1M in new customer ARR but churns $600,000, net new ARR is only $400,000. Burn multiple is calculated on net new ARR, so high churn dramatically inflates the metric even if the company is growing. A 3x burn multiple with high churn is a different (worse) situation than a 3x burn multiple with zero churn and simply large upfront investment.
- Front-loaded hiring ahead of revenue: companies that hire significantly ahead of their revenue curve — building a large sales team before the pipeline to fill it, or building engineering capacity ahead of product-market fit — accumulate burn before generating ARR. If the subsequent ARR growth materializes, the burn multiple improves over time. If it does not, the company has burned a large hole.
- Low revenue efficiency in sales and marketing: a go-to-market motion that generates few conversions from high spend is the most direct driver of poor burn multiple. Improving sales efficiency, ICP focus, and marketing conversion rates reduces burn multiple from the GTM component.
Burn Multiple in the Post-Zero-Interest-Rate Environment
Burn multiple gained particular salience in 2022-2023 as rising interest rates increased the cost of capital and investor sentiment shifted from “growth at all costs” to “efficient growth.” The metric became a primary lens through which growth-stage investors evaluated whether a company’s pace of burning capital was justified by its ARR growth. Companies with burn multiples above 3x that could not demonstrate a clear path to improvement faced significantly more difficult fundraising environments than their more efficient peers.