Burn Multiple: The Metric That Replaced Growth Rate

Growth rate on its own stopped being a sufficient answer somewhere around 2023. It tells you how fast, and says nothing about what the speed cost. Burn multiple closes that gap in one number.

The formula:

Burn multiple = net burn ÷ net new ARR

How many dollars of cash you consume to manufacture one dollar of recurring revenue. Lower is better. Popularised by David Sacks, and it caught on because it is unusually difficult to make flattering.

The scale

The two ways it gets misreported

Using gross new ARR

Net new ARR is new plus expansion, minus churned and contracted. Using the gross figure ignores the revenue walking out the back door and can halve the reported multiple. It is the single most common error.

Using planned burn

Net burn is cash out minus cash in, as it actually happened. Not the budget. Not the number excluding the one-off you are treating as exceptional. If it left the bank, it counts.

Why it beats growth rate as a single metric

Two companies both tripling ARR:

• Company A — $200K/mo burn, $150K/mo net new ARR. Burn multiple 1.33x.
• Company B — $600K/mo burn, $150K/mo net new ARR. Burn multiple 4x.

Identical growth rates. Company A is building a business; Company B is buying a chart. On growth rate alone they are indistinguishable, which is precisely why the market moved to a metric that separates them.

It also composes well with CAC payback. A high burn multiple and a long payback are usually the same underlying problem — acquisition that does not pay for itself — showing up in two places.

The runway number that actually matters

Runway is cash divided by burn. Everyone tracks it. It is not the number that should drive your decisions.

The number that matters is runway minus the length of a raise. Most seed and Series A rounds take four to eight months from first conversation to money landing, longer in a slow market.

So ten months of runway is not ten months of freedom. It is roughly four months of freedom followed by a fundraise you are running out of time on — and everyone across the table knows it. Terms reflect that. Starting a raise with twelve months of runway is a materially different negotiation from starting with seven.

Improving it

Only two levers exist, and they are not symmetrical.

Increase net new ARR. Better conversion, better retention, expansion revenue, higher prices. This is almost always the right lever, because it improves the numerator and denominator of half your other metrics simultaneously.

Reduce burn. Faster, and it shrinks the business. Correct when spend is genuinely unproductive; a trap when it is just the visible option. Cutting the channel that was working because it was expensive is how a 3x burn multiple becomes a 3x burn multiple on a smaller base.

The order matters. Fix retention and pricing before you cut, because both raise net new ARR without touching the top of the funnel.

What to report

Quarterly burn multiple, trailing, with net new ARR shown net. Plus the trend.

Direction is more persuasive than level here. A company at 2.4x and falling for three quarters is telling a story about a business that is figuring out its economics. A company at 1.9x and rising is telling a different one, whatever the current number says.

Questions