1. The numbers
One row per month, oldest first, the last row being the month you are reporting. Three or four months is plenty.
This month's MRR movements (optional, for quick ratio and churn)
2. The story, one point per line
Fill in the numbers, then click Build the update.
Your metrics
| Month | MRR | Growth | Customers | Cash | Net burn |
|---|
The update
How it is built
Net burn: last month's cash minus this month's cash, plus any money raised that month. The headline figure averages the last three months.
Runway: cash divided by average net burn, and the month the cash would run out.
Burn multiple: this month's net burn divided by net new ARR (net new MRR times twelve).
Default alive: revenue grows at the compound monthly rate of the last three months, expenses stay flat at today's level, and the test asks whether revenue overtakes expenses before cash goes below zero within five years. A bisection finds the smallest growth rate that would pass.
Checked: the test suite recomputes the worked example by hand and runs hundreds of random histories, asserting that runway times burn equals cash, that being alive is monotone in growth, and that the required growth rate sits exactly on the boundary.
Common questions
What should go in a monthly investor update?
Investors want the same few things every month: the headline numbers (MRR, customers, cash, burn and runway), what went well, what went badly, and specific asks. A short update sent on a steady schedule builds more trust than a long one sent when there is good news. This tool turns your numbers into the metrics block and leaves room for your own highlights, lowlights and asks.
How do I calculate runway?
Runway is cash in the bank divided by net monthly burn, where net burn is the cash you lose each month after revenue, excluding money raised. This tool averages the last three months of burn so one unusual month does not swing the answer, and shows the month the cash would run out.
What is a good burn multiple?
The burn multiple is net burn divided by net new ARR. Under 1 is considered amazing, 1 to 1.5 great, 1.5 to 2 good, 2 to 3 suspect and over 3 bad. It tells an investor how much cash you spend to add a dollar of recurring revenue.
What does default alive mean?
A company is default alive if, at its current growth rate and with expenses held flat, revenue overtakes expenses before the cash runs out. Default dead means it will run out first unless something changes. The tool runs that projection from your numbers and also reports the monthly growth rate you would need to be default alive.
Is my data uploaded?
No. Everything is calculated in your browser, there are no accounts, and nothing is sent to a server. Use Save update to keep your numbers as a file and load them next month.
Is this financial advice?
No. It is arithmetic on the numbers you type and a plain-text template. Check your figures before sending them to anyone, and follow your own legal obligations to investors.