The Working Capital Doom Spiral

The most dangerous moment in a growing company is not when revenue is falling.

It's when revenue is growing, the team is expanding, the pipeline looks strong — and cash is quietly draining faster than it comes in.

I've lived this. I've also advised clients through it after the fact, which is ten times more expensive than preventing it.

Why Growth Kills Companies

It sounds paradoxical. Growth consumes cash before it generates it.

You win a large contract. You hire to deliver it. You invoice 30-60-90 days later. Your suppliers want payment now. Your staff wants payment now. The Finanzamt wants payment now.

The gap between cash out and cash in is called the cash conversion cycle. In professional services, it typically runs 45-90 days. For project-based businesses with milestone billing, it can stretch to 120 or more.

When you're small, the gap is small. When you grow fast, the gap grows faster than you do.

The Four Numbers

These are the four metrics I check first in any new engagement. You should know all four from memory, updated weekly.

Weeks of cash remaining. Take your current bank balance. Divide by average weekly cash outflow. That's how many weeks you can operate at current burn without new revenue. Below 6 weeks: intervention required. Below 4: crisis mode.

Debtor days (DSO). Total receivables divided by daily revenue. If your payment terms are 30 days and your DSO is 55, you have a collections problem you may not have noticed yet.

Creditor days. How long are you taking to pay suppliers? Ideally longer than your debtor days — you're paid before you pay. If reversed, you're financing your clients' working capital with your own cash.

Pipeline quality ratio. Not pipeline value — probability-weighted value in the next 90 days, divided by your 90-day cash requirement. Below 1.5x means you're 90 days from a real problem if one deal slips.

The Behavioral Patterns That Make It Worse

Numbers don't kill companies. Behaviors do.

The optimism buffer. Founders systematically overestimate pipeline conversion speed and underestimate implementation time. This isn't stupidity — it's the mental model required to sell. But it makes cash forecasting consistently optimistic.

The salary omission. Many founders don't pay themselves properly and don't count their own labor in project economics. This creates the illusion of margin that vanishes the moment you hire someone to replace what you were doing.

The VAT surprise. In Germany, quarterly VAT payments hit fast-growing companies hard when they haven't set aside the tax component of invoices. This catches first-time founders repeatedly.

The late invoice. You delivered the project. The invoice is almost ready. You've been busy. It waits two weeks. The client takes 30 days. You've added six weeks of cash gap for free.

What Intervention Looks Like

If you're watching the cash number and getting uncomfortable, the interventions in order of speed and impact:

1. Invoice everything outstanding today. Not tomorrow.
2. Call your top three debtors personally. Not email — phone. "Is there anything blocking payment?" Often the blocker is an invoice routing issue you didn't know about.
3. Extend payables where you have supplier relationships. Most would rather wait 30 days than lose a customer.
4. Pause non-essential cash outflows immediately.
5. Model three scenarios: base, bad, and ugly. Know at what point each scenario requires a different decision.

If payroll is already at risk or creditors are calling — different rules apply. Get professional insolvency advice. Do not manage that alone.

The Question to Ask Now

Not when it's urgent. Now:

"If my largest client stopped paying tomorrow, how many weeks until payroll is a problem?"

If you don't know the answer immediately, that's the first thing to fix.

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I offer a 90-minute Cash Check for founders and agency owners — a structured review of your working capital position, the four numbers, and 30/60/90-day actions. Book here.