GUIDE · ALL SECTORS

7 Cash Flow Mistakes That Sink Profitable Businesses

These are the patterns I see repeatedly across 56 entities and 18 countries. A business can be profitable on paper and still run out of cash. Here are the 7 ways it happens.

1. Confusing Profit with Cash

A business can show profit on the P&L and still have negative cash flow. Revenue recognised on accrual is not cash in the bank. The gap is where most cash crises start.

2. Ignoring the Cash Conversion Cycle

DSO + Inventory Days – Creditor Days = Cash Conversion Cycle. If this is growing, your working capital is expanding faster than your revenue. In agencies, a 45+ day cash cycle means you need 6 weeks of payroll before you see a cent of client revenue.

3. Letting Client Concentration Creep Up

When one client passes 25% of revenue, you are one renegotiation away from a cash crisis. At 40%, you do not have a business — you have a contract. I have seen this destroy agencies overnight.

4. Overinvesting in Inventory or WIP

Every day of excess inventory or unbilled WIP is cash you have already spent. Manufacturing inventory above 90 days, agency WIP above 30 days — both are cash traps disguised as operational metrics.

5. Stretching Payables Without a Plan

Extending creditor days is borrowing from suppliers at zero interest — until they stop supplying. In manufacturing, one supplier cut-off can stop production. In agri-trading, missing a farmer payment means you lose the relationship for the year.

6. Growing Revenue Without Growing Cash

Growth consumes cash. Every new client, every new hire, every new project has a cash investment before it produces returns. If your growth is funded by your working capital, you will eventually hit a wall.

7. Not Having a Cash Forecast

A 13-week cash forecast is the single most valuable financial tool for any business under $50M. It tells you exactly when cash gets tight — and gives you time to do something about it. Most businesses don't have one. The ones that do rarely have a cash crisis.

The test: If you cannot tell me your current cash conversion cycle, your debtor days by client (not average), and your committed vs. flexible cost base — you are flying blind. The Margin Note gives you all three in one page.