Why profitable businesses still run out of cash

A business can report a profit and still lack the cash to pay its bills.

That is not an accounting error, and it is not rare. It is the ordinary result of a profit figure and a bank balance measuring two different things. A company can have its best trading year on record and still be unable to make payroll in the third week of it — and the accounts will show both facts at once, without contradiction.

This page works through exactly how that happens, with numbers you can follow line by line. If you would rather start with your own figures, the free four-week cash-flow calculator is open, needs no account, and runs in your browser.

The short version

• Profit matches the revenue you earned in a period with the costs of earning it. Cash is money that actually arrived or actually left.
• Under accrual accounting these are recorded at different moments, so profit can be healthy while the bank balance falls.
• The usual culprits are unpaid customer invoices, stock sitting on shelves, equipment bought outright, and the principal part of a loan repayment.
• Growing makes it worse before it makes it better, because growth ties up more cash in customers and stock before the extra money comes back.
• A short, honest forecast of money in and money out is the cheapest protection available.

Profit and cash answer different questions

Profit answers: did this period's trading make sense? It puts revenue next to the costs of earning that revenue, whether or not anybody has been paid yet. A sale counts when you deliver, not when the customer pays. A cost counts when you incur it, not when you settle the invoice.

Cash answers a blunter question: what actually moved? Money in, money out, and what is left.

Under accrual accounting — the basis almost every business reports on — these two do not have to happen at the same time, and usually do not. The gap between them is not a rounding difference. It can be larger than the profit itself.

A worked example: BrightBox

BrightBox is a fictional, simplified example. It is not a real company, and the figures are chosen to make the mechanism visible rather than to model a real business.

BrightBox starts the period with ₱500,000 in the bank.

The profit

Line	Amount
Sales	₱1,200,000
Cost of goods sold	(₱720,000)
Cash operating expenses	(₱210,000)
Depreciation	(₱40,000)
Interest expense	(₱20,000)
Profit before tax	₱210,000

A profit of ₱210,000. By this measure the period went well.

What actually moved

Now the cash. Of the ₱1,200,000 in sales, customers actually handed over ₱360,000 — the other ₱840,000 is still owed, sitting in accounts receivable. BrightBox bought ₱1,000,000 of inventory, of which ₱280,000 is still on the shelves. Suppliers were paid ₱600,000, with ₱400,000 still owing to them as accounts payable.

From profit to operating cash

Step	Amount
Profit before tax	₱210,000
Add back depreciation (no cash left the business)	₱40,000
Less increase in receivables (sold, not collected)	(₱840,000)
Less increase in inventory (bought, not sold)	(₱280,000)
Add increase in payables (received, not yet paid for)	₱400,000
Operating cash flow	(₱470,000)

The same bridge in a sentence: start with ₱210,000 of profit, add ₱40,000 of depreciation, subtract ₱840,000 of extra receivables, subtract ₱280,000 of extra inventory, add ₱400,000 of extra payables, and you reach negative ₱470,000.

You can check that from the other direction, which is worth doing once because it is the version your bank statement shows. BrightBox collected ₱360,000 and paid out ₱600,000 to suppliers, ₱210,000 in operating expenses and ₱20,000 in interest — ₱830,000 out against ₱360,000 in. That is the same negative ₱470,000, arrived at by adding up the actual movements.

The rest of the period's cash

Two more payments never appear in the profit figure at all:

Movement	Amount
Operating cash flow	(₱470,000)
Equipment purchase	(₱180,000)
Loan principal repayment	(₱80,000)
Total net cash movement	(₱730,000)

Opening cash of ₱500,000 against a net movement of negative ₱730,000 leaves BrightBox ₱230,000 short — a business that earned ₱210,000 of profit and cannot pay what it owes.

That ₱230,000 is a funding gap: the amount that has to come from somewhere before the period ends. It is not evidence that the bank will let the account go negative. An overdraft is a facility that has to be arranged in advance, and "the balance went below zero" is what happens to businesses that assumed otherwise. The gap has to be closed by collecting sooner, paying later, spending less, or arranging finance — before the payment dates arrive, not after.

The assumptions behind these numbers

To keep the mechanism visible, this example assumes: no cash movements or working-capital changes other than those listed; no tax payments; operating expenses and interest paid in cash during the period; and interest included within operating cash flow rather than shown separately. A real cash-flow statement makes finer distinctions than this.

Why the gap appears

Six things move cash and profit apart, and each is ordinary.

Receivables. You made the sale and recorded the profit; the money arrives in thirty, sixty or ninety days. Until then you have funded your customer's purchase out of your own bank account.

Inventory. Stock is cash converted into things on a shelf. It costs money the day you buy it and returns money only when it sells — and only the sold portion reaches cost of goods sold. Everything else is cash you can see but cannot spend.

Supplier credit. This one runs your way. Buying on terms lets you hold cash you already owe, which is why an increase in payables adds to cash. It is also borrowed time: the payment is coming.

Depreciation. An expense that reduces profit and moves no money. The cash went out when the asset was bought, possibly years ago. That is why the bridge adds it back.

Equipment purchases. The mirror image. Buying a ₱180,000 machine takes ₱180,000 out of the bank immediately, but reaches the profit figure slowly, as depreciation, over the years you use it.

Loan principal versus interest. A loan repayment is usually two things in one transfer. The interest is a cost of borrowing and reduces profit. The principal repays money you were lent — it never was income, so repaying it is not an expense. It leaves the bank and never touches the profit figure at all. Splitting the two is one of the most common places a forecast goes wrong.

Two things are worth saying plainly, because the shorthand version of this idea misleads in both directions: not every payment is an expense, and not every sale becomes cash when you make it.

Why growing makes it harder

Growth consumes cash before it produces any. Suppose BrightBox wins additional business:

Movement	Amount
Additional sales	₱600,000
Additional receivables	(₱420,000)
Additional inventory	(₱140,000)
Additional supplier credit	₱200,000
Additional operating working capital tied up	₱360,000

Those extra sales require ₱360,000 of extra cash to be tied up in customers and stock, net of what suppliers will finance.

Read that figure carefully. ₱360,000 is the incremental working-capital requirement — how much more cash the larger trading volume ties up. It is not the net cash effect of growing, which would also have to account for the margin those sales earn, and it is not the final financing need. It is one component, and it is the component that surprises people, because it grows with success.

This does not apply to every business. A shop paid at the till and invoiced by its suppliers on thirty-day terms collects before it pays, and can generate cash as it grows rather than consuming it. Which pattern you are in is worth knowing before you decide how fast to grow.

What to do this week

You do not need a finance function to see this coming. You need four weeks of honest timing.

1. Start with the cash you actually have — what is in the accounts and the till today.
2. Add the collections you realistically expect in each week. Not what you invoiced. What you expect to be paid, in the week you expect it.
3. Subtract the payments you expect to make that week — suppliers, payroll, rent, taxes, loan payments, equipment.
4. Carry each week's closing balance into the next week. This is the step that matters: a tight week does not reset, it compounds.
5. Compare every week against a minimum cash buffer you have chosen deliberately — the least you are willing to be left with.
6. Revisit it as timing changes. A forecast is a statement about dates, and dates move.

One limitation to hold on to: weekly closing balances can hide a shortage that happens earlier in the same week. A week that ends at ₱40,000 can still have a Wednesday at negative ₱90,000 if a large payment clears before a large collection lands. When a week looks tight, go through it day by day.

The four-week cash-flow calculator does this arithmetic for you. It carries each week's closing balance forward, flags the first week that ends below zero and the first that ends below your buffer, and tells you how much would keep every week above it. It is free, needs no account or email address, and runs entirely in your browser — nothing you type is sent anywhere.

Build your four-week cash forecast

Profit tells you whether the trading made sense. Cash tells you whether you survive the month. You need both, and only one of them can be late.

Build your four-week cash forecast — free, no account, nothing to install.

---

Examples are simplified for education and planning. Actual business circumstances may differ.