Understanding Burn
Burn rate is not a scary number. It is the pace at which you are spending the resource you cannot get back. Read it well, and it tells you everything.
Burn rate is not the problem. The problem is not knowing what each dollar is buying you. The founders who understand their burn rate are not worried about it. They have made it a tool, not a source of anxiety.
In short
- • How to read your burn rate as a signal, not a warning
- • The difference between good burn and bad burn
- • How to set a burn target that matches your revenue trajectory
- • The monthly review that keeps burn under control
Know your real burn
Burn rate is the cash the business is consuming over a period. The useful number is not a slogan such as “monthly expenses”; it is the amount of cash the company actually needs to fund its operating commitments.
Separate:
- payroll and contractors;
- rent and facilities;
- software and infrastructure;
- marketing and sales spend;
- taxes;
- debt service;
- inventory or production commitments;
- founder compensation;
- irregular but recurring costs.
Review actual bank movements against the plan.
Gross burn and net burn answer different questions
Gross burn: total cash operating outflows over the period.
Net burn: cash outflows minus operating cash inflows over the period.
For a company with uneven revenue, net burn can look healthy in one month and alarming in another. That is why a founder should not use a single monthly number without looking at cash timing.
Build a cash view, not just a P&L view
A simple weekly cash model can show:
Opening cash + expected collections - committed outflows - discretionary outflows = projected closing cash.
Separate expected inflows from committed inflows. A signed invoice is not the same as cash in the bank.
Track:
- receivables aging;
- payment dates;
- payroll;
- taxes;
- supplier commitments;
- debt;
- major one-off expenses;
- discretionary spend.
Connect spending to a decision
Not every expense must have a direct revenue attribution. Product development, compliance, infrastructure, hiring and learning can all be legitimate uses of cash.
Instead ask:
- What problem does this spend solve?
- What outcome is expected?
- What is reversible?
- What evidence will we review?
- What happens if the expected result does not appear?
This is more useful than demanding that every dollar produce immediate revenue.
Stress-test the burn
Model at least three cases:
Base: expected collections and planned outflows.
Delay: one or more important collections arrive later.
Downside: revenue falls while essential outflows remain.
Then calculate how long the business can operate in each case.
A founder should know which costs can be reduced quickly and which are effectively fixed.
Decision test
Every month, review:
- Actual gross burn
- Actual net cash movement
- Protected operating commitments
- Expected collections and confidence in them
- Cash runway under base and downside cases
- Largest discretionary spend
- Decision that should change because of the numbers
The purpose of burn tracking is not to become obsessed with spending. It is to know which choices remain affordable.
Evidence boundary
Cash-flow and working-capital principles support the framework. The appropriate burn level depends on business model, stage, revenue timing, commitments and access to capital.
Take it into your work
Do something with what you just read.
Save it for later, mark the passage that matters, or open your SOE workspace and keep thinking.
Takeaways
What to carry forward
- → Burn rate is a signal. High burn is not always bad. Bad burn is burn with no revenue path.
- → Track net burn, not gross burn.
- → Set a burn target every month and review it weekly.
- → Good burn means you are spending to grow revenue. Bad burn means you are spending to stay where you are.
Burn rate is a story your numbers tell about whether you are building a business or funding a delay. Read it honestly, review it monthly, and act on it before the anxiety forces your hand. The founders who manage burn well are the ones who keep their options open.