Article 3 of 8 · Financial Intelligence · 10 min read
Working Capital: The Cash Trapped in Your Own Business
A company can be profitable, growing, and winning new clients — and still sweat every payroll. The money isn't missing. It's locked inside the business, in invoices not yet collected and stock not yet sold.
A manufacturing company closes its best year yet. Revenue up 40%, every month profitable, order book full into next quarter. And in the third week of most months, the founder is refreshing the bank balance before releasing salaries, wondering how a business this healthy on paper feels this tight in the account.
Nothing is wrong with the business. What's happening is one of the most misunderstood dynamics in finance: profit and cash are not the same thing, and the gap between them has a name — working capital. In the first article of this series we separated cash flow from profit. This is the mechanism underneath that separation, and once you can see it, a whole category of "we're profitable but broke" mysteries dissolves.
What working capital actually is
The textbook definition is current assets minus current liabilities. That's accurate and almost useless for running a company. The operational version is far more practical: working capital is the cash tied up in keeping the business running day to day — mostly in three places.
Put simply: every euro sitting in an unpaid invoice or a full warehouse is a euro you earned but can't use. Every euro you haven't yet paid a supplier is a euro of theirs you're using for free. Working capital is the net of the two — and for most growing companies, it quietly swallows cash.
The three moving parts
- Receivables — Money clients owe you for work already delivered. Your cash, sitting in someone else's account.
- Inventory — Cash converted into stock and materials, waiting to be sold. Value you own but can't spend.
- Payables — Money you owe suppliers but haven't paid yet. Effectively a free short-term loan from them to you.
The cash conversion cycle
The clearest way to see the trap is in days, not euros. Three numbers tell the whole story.
DSO — how many days, on average, between delivering to a client and getting paid. DIO — how many days stock sits before it's sold. DPO — how many days you take to pay suppliers. The cash conversion cycle is the number of days between spending a euro and getting it back. If your cycle is 60 days, every euro of growth requires you to fund 60 days of operations before that euro returns.
The cash conversion cycle is how long your money is out of your hands. Growth doesn't shorten it — growth multiplies it.
Why growth makes it worse
This is the part that catches good businesses off guard. When you grow, you deliver more, so more cash is tied up in receivables. You hold more stock to meet demand, so more cash sits in inventory. Both climb before the extra revenue actually lands in the bank. The faster you grow, the more cash the growth itself consumes — which is exactly why profitable, expanding companies can run out of money. It isn't a profit problem. It's a timing problem, and growth makes the timing harder.
A worked example
Take a company doing €6,000,000 a year — roughly €16,400 of cost flowing through operations each day. Its cycle looks like this:
Sixty-five days of operations funded out of the company's own pocket at any given moment. At roughly €16,400 a day, that's about €1.07 million of cash permanently locked inside the business just to keep it running. Now suppose you simply collect ten days faster and hold five fewer days of stock. The cycle drops to 50 days — and roughly €246,000 of cash is released back into the account. No new sales, no new financing. The same business, run tighter.
The four levers
Every improvement in working capital comes from one of four moves. None requires a bank.
1. Collect faster (lower DSO)
Invoice the day work is done, not at month-end. Make terms explicit and shorter where the relationship allows. Chase overdue invoices as a routine, not an apology. A company that quietly lets DSO drift from 45 to 60 days has handed a large interest-free loan to its clients without deciding to.
2. Hold less inventory (lower DIO)
Every day of stock is cash on a shelf. Better demand forecasting, tighter reorder points, and clearing slow-moving lines free cash directly — without touching a single price.
3. Pay smarter (higher DPO — within reason)
Using the full agreed payment terms with suppliers is legitimate cash management. Paying every invoice the day it arrives is generosity you may not be able to afford. The line to hold: use your terms fully, but never at the cost of a supplier relationship you depend on, or an early-payment discount that's worth more than the days.
4. Price and structure the terms (change the deal)
Deposits, milestone billing, and partial upfront payments move cash toward you instead of away. For project work especially, how you structure payment often matters more to cash than the headline price.
Why this belongs on the leadership dashboard
Most management reports track revenue and profit and stop there. Working capital — and specifically the cash conversion cycle — deserves a place next to them, because it's the number that explains the gap between a good P&L and a tense bank account. A company that watches its cycle the way it watches its margin rarely gets ambushed by its own growth.
See where your cash is really tied up.
Upload your receivables, inventory, and payables data into PrismIQ and an AI agent maps your cash conversion cycle, flags where days are drifting, and shows the cash you could release — in a clear report, no technical skills required.
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