Working Capital: How to Know If Your Business Can Breathe
Some companies die from “lack of sales.” Others die from “lack of profit.” But there’s a third type that’s far more treacherous: the ones that die with decent sales and acceptable profit… because they run out of cash. They sell, invoice, stay busy—and still, every month feels like holding your breath. Not enough oxygen to pay salaries, suppliers, taxes, and the bank.
That’s where working capital comes in. It’s not just accounting jargon. It’s a clean way to ask something very simple:
Does your business have enough lungs to handle the day‑to‑day, or is it breathing through a straw?
Let’s translate working capital into business‑owner language: what it is, how to calculate it, what it tells you when it’s positive/near‑zero/negative, and what to do if you realize you’re running on thin air.
Working capital, in plain English
Textbook definition:
Working capital = current assets – current liabilities
A definition that actually helps:
- Current assets: what your company has and expects to turn into cash within a year (cash, bank balance, receivables, inventory…).
- Current liabilities: what your company must pay within a year (suppliers, wages due, taxes, short‑term loan payments, etc.).
Working capital is basically:
The part of your short‑term resources that remains after covering short‑term obligations.
- If it’s positive, you have a cushion: your short‑term resources are larger than your short‑term obligations.
- If it’s negative, what you have in the short term isn’t enough to cover what’s due in the same time frame.
That’s why the “lungs” metaphor fits:
- Comfortable working capital = a business that can breathe at month‑end.
- Negative working capital = a business that runs out of air the moment collections slip.
How to calculate working capital (simple example)
You don’t need a monster spreadsheet. A basic balance snapshot is enough.
Imagine this simplified case:
Current assets
- Cash and bank: €10,000
- Customers (invoices to collect): €30,000
- Inventory: €15,000
Total current assets = 10,000 + 30,000 + 15,000 = €55,000
Current liabilities
- Suppliers: €20,000
- Taxes and social security due next month: €8,000
- Loan payments due this year: €12,000
- Other short‑term payables: €5,000
Total current liabilities = 20,000 + 8,000 + 12,000 + 5,000 = €45,000
Now subtract:
Working capital = 55,000 – 45,000 = €10,000
In theory, if you turn your current assets into cash (collect receivables, sell inventory, use cash on hand), you could pay everything due in the short term and still have €10,000 of breathing room.
If the result is:
- Near zero → you’re running tight.
- Negative → to pay what’s due soon, you’ll need “non‑short‑term” solutions (sell fixed assets, take more debt, inject cash yourself…).
What positive, near‑zero, or negative working capital really means
The number matters. The meaning matters more.
Clearly positive working capital
It doesn’t have to be huge. But if month after month:
- It’s positive and fairly stable,
- Collections and payments are under control,
- And you don’t constantly get liquidity scares,
your business can breathe.
That doesn’t mean everything is great (you might still have weak margins or a heavy cost structure). It just means you’re not living on the edge of a cash cliff.
Working capital close to zero
This is “watch it—we’re tight.”
A small working capital can be fine in some models (e.g., you collect upfront and pay later). But in most cases it means:
- Any delay in collections or unexpected expense can put you in trouble.
- A 2–3 month bump would make you sweat.
Think of it as flying with just enough fuel… as long as there’s no headwind, holding, or diversion.
Negative working capital
This is the clear red flag:
Your current assets aren’t enough to cover your current liabilities.
Translation: to pay what’s due soon, you need:
- More sales coming in fast,
- Or more bank credit,
- Or shareholders injecting cash,
- Or someone else financing you (suppliers, tax authorities, etc.).
Negative working capital for a short period can make sense (one‑off investment, strong growth phase). But if it persists:
- You’re funding daily operations with patches.
- Any serious hiccup becomes a cash emergency.
Bottom line: it’s not “sell more.” It’s change how you finance your operating cycle.
Signs your working capital is getting too tight
Even if you don’t check the balance monthly, the business will “tell you.” Typical signs:
- Month‑end is a fight: you choose what to pay and what to delay.
- Suppliers calling again and again.
- You treat your credit line like normal cash, always near the limit.
- You routinely negotiate payment plans with taxes/social security.
- Any unexpected bill forces you to reshuffle the whole week.
Same signal every time: short‑term commitments are outgrowing your short‑term comfort.
How to improve working capital (no magic, no smoke)
Improving working capital isn’t only “add more money” (sometimes it is). It’s about how you manage collections, payments, inventory—and how you finance the business.
Collect earlier (or at least, not so late)
Every extra day to collect hits working capital. Simple ideas:
- Shorten standard payment terms on new proposals.
- Offer reasonable incentives for early payment.
- Invoice in milestones for long projects (not only at the end).
- Be disciplined with delays: reminders, calls, pause service if needed.
It’s not aggression. It’s recognizing that late payers are using your balance sheet.
Pay later (without burning the relationship)
The other side is payments. You can:
- Negotiate longer terms with key suppliers in exchange for stability or volume.
- Align due dates with collections (e.g., pay on the 15th instead of the 1st).
- Avoid prepaying when it doesn’t buy you anything.
The key is agreed later payments—not “stop paying and hope.”
Reduce dead or slow inventory
Inventory is cash turned into stuff that hasn’t turned into sales yet. Review:
- Items that haven’t moved for months.
- Bulk purchases “because it was cheaper” that don’t sell.
- Minimum stock levels that can be reduced if suppliers deliver fast.
Every euro you unlock from excess inventory returns to real current assets.
Match growth to your financial lungs
Many businesses suffocate right when things start going well:
- More sales → more inventory, more people, more expenses, more customer credit.
- But collections don’t accelerate at the same pace.
That’s not “a problem.” That’s growing beyond your lungs. Sometimes the fix isn’t “grow faster.” It’s grow slightly slower—or restructure:
- Tighten commercial credit a bit.
- Use dedicated working‑capital financing.
- Raise prices so growth is profitable, not just bigger.
Finance long‑term assets with long‑term money
If you’ve made big investments (equipment, software, vehicles) paid mostly in cash or with short‑term debt, they might be crushing your working capital.
Healthy rule of thumb:
- Finance long‑term assets with long‑term financing.
- Don’t pay large investments in one hit if it leaves the short term gasping.
How to review working capital monthly (without being a finance person)
Once a month, build this mini‑snapshot:
- Current assets
- Cash and bank.
- Accounts receivable.
- Inventory valued realistically.
- Current liabilities
- Suppliers.
- Taxes/social security due soon.
- Loan payments due this year.
- Other short‑term commitments.
Subtract and ask:
- Is it positive? By how much?
- Better or worse than three months ago?
- What changed (more receivables, more debt, less cash…)?
Trends beat single numbers every time.
The takeaway
Knowing your working capital is basically knowing whether your business can breathe without panicking at month‑end.
It’s not reserved for accountants. It’s a question any owner should be able to answer:
“Do we have enough lungs to handle the next few months if things stay like this?”
If yes, you can focus on margins, growth, and sharpening the model. If no, your priority isn’t “sell more at all costs.” It’s to put oxygen back into the system—before a normal business bump turns into an emergency.