Burn Multiple

Burn multiple is a capital-efficiency metric calculated as net burn divided by net new ARR, measuring cash burned per dollar of new ARR. The denominator can also be net new revenue. The metric was popularized by David Sacks in 2020 and became a dominant SaaS efficiency metric during the 2022-2024 capital-tightening period when investors began scrutinizing capital efficiency far more rigorously than during the 2020-2021 growth-at-all-costs era. It is the SaaS metric that captures the spirit of "capital efficiency matters now."

The calculation:

Burn Multiple = Net Burn / Net New ARR

• Net burn: monthly cash burn (operating cash outflows minus inflows).
• Net new ARR: new ARR added in the period (new + expansion - churn - contraction).

Annualized: same with annual numbers.

Benchmark interpretation (David Sacks framework):

Burn Multiple < 1.0: Amazing. Burning less than $1 to generate $1 of new ARR. Top-quartile capital efficiency.

1.0 - 1.5: Great. Capital efficient growth.

1.5 - 2.0: Good. Standard for healthy SaaS.

2.0 - 3.0: Suspect. Growth costing more than ideal.

> 3.0: Bad. Growth requires significant subsidization.

Why burn multiple became dominant:

Post-2022 capital reset: investors focused on efficiency after 2020-2021 excess.

Simple to calculate: clear numerator and denominator.

Captures the key tradeoff: growth vs cash consumption.

Benchmarkable: standard across SaaS companies.

Complementary to other metrics: Burn Multiple + Magic Number + Rule of 40 = comprehensive efficiency view.

The shift in investor focus:

Pre-2022: growth at all costs. Burn multiple of 3-5x acceptable if growth was strong.

Post-2022: capital efficiency emphasized. Burn multiple under 2.0 expected; under 1.5 strongly preferred.

Current state (2026): burn multiple firmly entrenched as a key investor metric.

How to improve burn multiple:

Increase ACV: same burn → more new ARR per dollar.

Reduce churn: same gross new ARR → more net new ARR.

Reduce CAC: less cash spent per new customer.

Pricing increases: higher prices on existing customers expand ARR without proportional burn.

Operational efficiency: reduce non-revenue-generating expenses.

What founders get wrong: Optimizing for growth without watching burn multiple, then being surprised when investors prioritize efficiency. The right discipline: track burn multiple alongside growth metrics; balance growth investment with efficiency.

Related: Capital Efficiency · Burn Rate · Magic Number · Rule of 40 · CAC Payback

FAQ

What is burn multiple?
Capital-efficiency metric calculated as net burn divided by net new ARR. Measures how much cash the company burns to generate each dollar of new ARR. Popularized by David Sacks in 2020.

What's a good burn multiple?
Under 1.0: amazing (top quartile). 1.0-1.5: great. 1.5-2.0: good. 2.0-3.0: suspect. Over 3.0: bad. Most current SaaS investors expect under 2.0; strongly prefer under 1.5.

Why did burn multiple become so important?
Post-2022 capital reset shifted investor focus from growth-at-all-costs to capital efficiency. Burn multiple became the shorthand for that shift. Simple to calculate, captures key tradeoff between growth and cash consumption, complementary to other efficiency metrics.