TL;DR
- Under 1.5x is excellent at Series A and beyond. Under 1.0x is top-quartile at Series B.
- Formula: Net Burn ÷ Net New ARR. It measures how much cash you spend to generate $1 of new recurring revenue.
- Seed tolerance is higher — 3.0x to 5.0x is common before product-market fit. Anything above 2.0x at Series A raises flags.
- High burn multiples are usually caused by slow sales cycles, high churn, or headcount growth that outpaces the revenue engine.
- Trajectory matters more than any single period — investors want to see the multiple improving quarter over quarter.
Burn multiple is the capital efficiency metric that separates companies with disciplined growth from those that are buying revenue at any price. A business that generates $1M in net new ARR while spending $1.2M in net burn has a 1.2x multiple. One that spends $4M to generate the same $1M has a 4.0x multiple — and a fundamentally different story to tell investors.
The metric was popularized by David Sacks and Bessemer Venture Partners as a direct answer to a specific failure mode: SaaS companies growing ARR fast while quietly destroying capital efficiency. Burn multiple makes that inefficiency visible in a single number.
What Is Burn Multiple for SaaS
Burn multiple is a measure of how efficiently a SaaS company converts cash into net new ARR. The lower the number, the less cash the company burns per dollar of new recurring revenue it generates.
The metric was designed to answer one precise question: how much does it cost this company to grow? A company burning $2M per quarter to add $1M in net new ARR has a 2.0x burn multiple. To double ARR, it needs twice the capital of a company with a 1.0x multiple growing at the same rate.
Unlike raw burn rate, burn multiple is contextual. A $1M monthly burn is alarming for a pre-revenue startup and unremarkable for a $50M ARR company growing at 80% year over year. Burn multiple normalizes that context by tying cash consumed directly to revenue generated.
The metric sits at the intersection of growth and efficiency — which is exactly why it became a standard in VC due diligence alongside the Rule of 40 and CAC payback period. All three metrics ask versions of the same question: is this company building something that will eventually sustain itself, or does it require permanent capital subsidy?
Burn multiple = Net Burn ÷ Net New ARR. Lower is better.
How to Calculate Your Burn Multiple
The formula is straightforward. The inputs require precision.
Burn Multiple = Net Burn ÷ Net New ARR
Net burn is the cash your business consumes in a period after accounting for all revenue collected. It is not gross spend. It is spend minus all cash inflows — including customer payments, not just recurring subscription revenue. Use your actual bank statement, not your P&L.
Net new ARR is new ARR added in the period minus ARR churned in the same period. This is not your gross new ARR number. A company that adds $500K in new ARR but churns $200K has $300K in net new ARR. Expansion and contraction from existing customers both count.
Calculation Example
A SaaS company closes Q1 with these numbers:
- Cash at start of quarter: $8M
- Cash at end of quarter: $6.5M
- Customer payments received: $600K
- New ARR contracted: $700K
- Churned ARR: $100K
Net Burn = $8M - $6.5M = $1.5M. Net New ARR = $700K - $100K = $600K. Burn Multiple = $1.5M ÷ $600K = 2.5x.
At Series A, a 2.5x burn multiple is in the acceptable range but trending toward concerning. The team needs to either reduce net burn or accelerate net new ARR to hit the 1.5x target before the next raise.
Common Calculation Mistakes
The two most common errors are using gross new ARR instead of net new ARR, and using accrued revenue instead of cash received. Both inflate your result and give a falsely optimistic picture. Calculate from actual bank movements, not accounting entries.
The second common error is annualizing. Burn multiple should be calculated on the same time basis as your ARR reporting. If you report ARR quarterly, calculate burn on a quarterly basis. Mixing periods distorts the ratio.