A monthly business review is a short, recurring meeting where you check the numbers that decide whether the business lives: cash, burn, runway, revenue and its risks. In a corporation it involves a deck and a room. For a founder it needs none of that: five numbers, three questions, one decision, in a 30-minute calendar slot that repeats on the first Monday of every month.
The reason to run one is simple. Companies rarely get killed by a single bad number. They get killed by a number nobody looked at for four months. The defense is not a finance team or a heroic spreadsheet; it is this boring, repeating appointment with your own money. Same agenda, every time.
Here is the whole agenda.
Minutes 0 to 10: the five numbers
Write these down next to last month's values. The writing matters; numbers you record are numbers you notice changing.
| Number | The question it answers |
|---|---|
| Cash in bank | What is real |
| Net burn (3-month average) | What reality costs |
| Runway date | When it stops being real |
| MRR | What is coming in reliably |
| Biggest customer share | How fragile the MRR is |
That is the whole dashboard. Twenty other metrics exist and can matter, but these five are the ones whose silent drift ends companies.
Minutes 10 to 20: the three questions
1. What moved, and do I know why? Every delta needs a one-line explanation. "Burn up €4,000: new hire started, planned." Fine. "Burn up €4,000: unclear" is your homework for the week, because unexplained deltas are how leaks announce themselves.
2. What is the date? Say the runway date out loud, and compare it to the nearest deadline that matters: the fundraise start, the launch, the season. If the money date is now inside the milestone date, this is the moment you learn it, with months to act instead of weeks.
3. What did I commit to since last month? Signed offers, new contracts, cancelled customers. Anything decided but not yet visible in the averages gets added to the model now, so next month's numbers confirm the plan instead of surprising you.
Minutes 20 to 30: one decision
End every review by deciding exactly one thing. Not a strategy session: one act with a date. Cancel the zombie subscription. Send the price-raise email. Move the fundraise start forward a month. Chase the invoice that slipped past its expected date.
One decision a month sounds small. It is twelve corrections a year applied while they are still cheap, which is more course-correction than most companies ever get.
Making it stick
Three rules keep the ritual alive past February:
Calendar it with a hard edge. Thirty minutes, phone away, treat it like an investor meeting with your future self, because that is literally what it is.
Keep the record in one place. A running note, one section per month, five numbers and one decision each. Twelve months in, this document reads like the true story of the company, and it makes every investor update a copy-paste job.
Let the numbers be ready before you sit down. The classic failure is spending the thirty minutes assembling the numbers instead of reading them. If gathering takes the whole slot, fix the gathering: startup finance software exists for exactly this gap, and Plainhub's version of it means the five numbers are simply there, current, when Monday comes.
Thirty minutes, five numbers, three questions, one decision. Founders who run a monthly business review are never the ones saying "we suddenly ran out of money." Nothing about it was sudden; someone was just finally looking.