Why this matters
Revenue can grow while margins rot and cash quietly drains. Dashboard totals won't warn you; the monthly Profit and Loss and cash reports will. Founders who never open reports learn about problems from their bank balance.
What "done" looks like
- A monthly 30-minute review right after reconciliation
- You can state gross margin, monthly net profit or burn, and months of runway from memory
- Months compared against each other, not read in isolation
- Every review ends with one concrete decision or follow-up
How to do it
- Run the Profit and Loss (Accounting > Reports) comparing the last three months.
- Check gross margin first — revenue minus direct costs, as a percentage. A shrinking margin with rising revenue is a warning, not a win.
- Scan operating expenses line by line for creep: subscriptions, fees, anything growing faster than revenue.
- Open the Balance Sheet: cash, accounts receivable (who owes you), accounts payable (who you owe).
- Compute runway: cash divided by average monthly net cash outflow.
- Write down one action — chase an overdue invoice, cut a subscription, reprice — and do it before next month.
Common mistakes
- Watching revenue only; profit and cash are what keep you alive.
- Confusing profit with cash — an invoiced sale on the P&L isn't money in the bank until it's paid.
- Skipping the review in busy months, which are exactly when numbers move.
Real-world examples
- Xero's P&L and Balance Sheet are built into every plan, and Xero Analytics adds a short-term cash flow projection and business snapshot on top.
- CB Insights' startup post-mortem analyses consistently rank running out of cash among the top reasons startups fail.
From a founder's point of view
The first few monthly reviews feel like homework. Then the numbers start forming a story — which products carry the business, which costs creep, how long the cash lasts — and decisions stop being gut calls.
Rule of thumb
If you can't state your gross margin and months of runway without opening Xero, you haven't read your reports recently enough.