Ask a founder what their burn rate is and they will give you a number. Ask them why it is that number and most of them will shrug. The burn rate is whatever the expenses happen to be. It is not a decision. It is an accident. That is the problem.
What is the difference between gross burn and net burn?
Gross burn is your total monthly expenses: salaries, tools, marketing, office, everything. Net burn is gross burn minus revenue. If you spend two hundred thousand per month and collect fifty thousand in revenue, your gross burn is two hundred thousand and your net burn is one fifty.
Net burn is the only number that matters for runway. It tells you how much cash you are actually consuming each month. The founder who manages to gross burn thinks they have six months of runway. The founder who manages to net burn knows they have eight. That two-month difference can be the difference between closing a round and running out.
The mistake is using revenue growth to justify ignoring burn. "We are growing twenty percent month over month" is great, but if the net burn is also growing twenty percent month over month, you are scaling consumption, not building a business. Revenue should grow faster than expenses. When it does not, the gap compounds.
What is the burn multiple and why does it matter?
The burn multiple is net burn divided by net new revenue. It answers the question: how much are you spending to generate each dollar of new revenue?
A burn multiple of one means you spend one dollar to generate one dollar of new revenue. That is excellent. A burn multiple of two means you spend two dollars per dollar of new revenue. That is acceptable if the revenue is high-margin and recurring. A burn multiple of three or above means your growth is too expensive to sustain.
Here is a worked example. Last quarter you burned four hundred fifty thousand dollars net. You added two hundred thousand in new annual recurring revenue. Your burn multiple is four fifty divided by two hundred, which is two-point-two-five. That is on the high end of acceptable. If the trend is increasing, you need to either improve efficiency or slow spending.
The burn multiple is the metric that separates efficient growth from expensive growth. Venture capitalists look at it because it predicts whether the company can reach profitability without unlimited capital. A company with a burn multiple of one can grow sustainably. A company with a burn multiple of four needs to raise every eighteen months just to survive.
When should you step on the gas versus pull back?
Step on the gas when three things are true. Your unit economics are proven with an LTV to CAC ratio above three to one. Your sales process is repeatable, meaning a new rep can follow the playbook and close deals. And you have a specific, measurable use for the additional capital, not a vague plan to "grow faster."
Pull back when any of these are true. Your burn multiple is above three and trending up. Your runway is below nine months and you have not started fundraising. Your revenue growth is slowing but your expense growth is not. Or you cannot articulate what the next dollar of spending will produce.
The decision to increase or decrease burn should be made quarterly, not continuously. Set the burn rate for the quarter, communicate it to the team, and review it at the end. Continuous adjustment creates whiplash. Quarterly adjustment creates stability with accountability.
How do you cut burn without destroying the company?
Cutting burn is a skill. The founders who do it well cut early, cut precisely, and communicate honestly. The founders who do it badly cut late, cut broadly, and surprise their teams.
The order of operations matters. Start with the cuts that nobody will notice: unused tools, lapsed subscriptions, redundant services. Most companies find five to ten percent of burn in this category alone. Then renegotiate vendor contracts. Annual prepayments, multi-year discounts, and competitive bids can save another five to ten percent.
Next, pause discretionary spending: events, travel, non-essential marketing. Then pause hiring. Every open role should be re-evaluated against the current priorities. If a role does not serve the top three priorities, close the req.
Headcount reduction is the last resort, not the first. By the time you are cutting people, you should have already cut everything else. The founders who cut people first destroy trust and lose their best performers, who have options. The founders who cut everything else first and then make a small, precise headcount reduction keep the team intact and the culture functional.
What does a healthy burn rate look like?
There is no universal answer. A pre-revenue company with eighteen months of runway and a clear path to first revenue has a healthy burn rate. A company doing two million in revenue with a burn multiple of four has an unhealthy one, regardless of the absolute numbers.
The test: can you articulate why your burn rate is what it is? Not the total, but the strategy behind it. "We are burning one fifty per month because we are investing in two engineers who are building the feature that will open up the enterprise segment, and we expect that to generate three hundred thousand in new ARR within two quarters" is a strategy. "We are burning one fifty because that is what the expenses add up to" is an accident.
Know your number. Know why it is that number. Review it quarterly. Adjust deliberately. That is the difference between burn rate as a strategy and burn rate as a surprise.
Frequently asked questions
What is burn rate?
Burn rate is how much cash your company spends per month. Gross burn is total expenses. Net burn is total expenses minus revenue. Net burn is the number that determines your runway and the one you should manage to.
How do you calculate runway?
Cash on hand divided by net monthly burn. If you have six hundred thousand in the bank and your net burn is one hundred thousand per month, you have six months of runway. If you have six months, you should already be fundraising or cutting costs.
What is a burn multiple?
Net burn divided by net new revenue. If you burned two hundred thousand and added one hundred thousand in new revenue, your burn multiple is two. Below one is efficient. Above two is concerning. Above three means your growth is too expensive to sustain.
When should a startup increase its burn rate?
When you have proven unit economics, a repeatable sales process, and a clear use of funds with measurable return. Increasing burn before those three are true is just spending faster, not growing faster.
How do you cut burn rate quickly?
In order: cancel unused tools and subscriptions, renegotiate vendor contracts, pause hiring, reduce marketing spend on unproven channels, and as a last resort, reduce headcount. The first four should get you ten to twenty percent without touching the team.