Why profitable businesses run out of cash

Your accountant says you made a solid profit last year. Your bank account says otherwise. You’re chasing invoices, juggling suppliers and wondering how the business can be “doing well” when cash is this tight.

The short answer: profit and cash are measured differently. Profitable businesses run out of cash because money gets tied up in unpaid invoices, stock, loan repayments, tax and owner drawings, none of which show up clearly on your profit and loss. Once you can see where the cash went, you can get most of it back.

A Tyro survey of 519 Australian small business owners, released in March 2026, found that 59% had felt cash flow stress in the previous six months. Plenty of those businesses were making money on paper.

In short:

Profit counts income when you earn it, but cash only counts it when the customer pays.
Growth often drains cash, because you pay wages and suppliers before customers pay you.
Loan principal, new equipment, tax and drawings take cash but barely touch profit.
A simple “cash bridge” from profit to bank balance shows exactly where the money went.
Cutting debtor days is usually the fastest way to free up cash without borrowing.

Why do profitable businesses run out of cash?

Profitable businesses run out of cash because profit is an accounting result and cash is what’s actually in the bank. Your profit and loss records a sale the day you invoice it. The cash might not arrive for 30, 60 or 90 days.

In the meantime, wages, super, rent, suppliers and the ATO all want paying. If the gap between paying out and getting paid keeps growing, a profitable business can find itself short every month.

An accountant shows you what already happened. A CFO shows you what to do next.

Your annual accounts tell you whether you made money. They don’t tell you where the money is sitting now, or whether you’ll have enough on payday in six weeks.

What is the difference between profit and cash flow?

Profit is income minus expenses for a period. Cash flow is money in minus money out of your bank account over the same period. The two drift apart because of timing and because some payments never appear on the profit and loss at all.

This table shows the most common gaps.

Item	Effect on profit	Effect on cash
Invoice sent, not yet paid	Counted as income now	Nothing until the customer pays
Stock or materials bought and not yet used	Not an expense yet	Cash gone on the day you pay
Loan principal repayments	Not an expense (only interest is)	Full repayment leaves the bank
New vehicle or equipment	Spread over years as depreciation	Paid upfront or through finance
Owner drawings or dividends	Not an expense	Cash out
Income tax on last year’s profit	Relates to last year	Paid this year
GST collected	Not your income	Sits in your account until BAS is due

That last row catches a lot of owners out. GST and PAYG withholding feel like cash in the bank, but they belong to the ATO. We explain how to ring-fence it in how much to set aside for BAS each month.

Where does the cash actually go?

In most businesses, the cash goes to five places. Each one can be measured from your Xero reports.

Debtors (unpaid invoices)

This is the big one. If customers take 55 days to pay on a $5M turnover, you have around $750,000 sitting in other people’s bank accounts. As sales grow, that number grows with them.

Stock and work in progress

Materials on shelves, half-finished jobs and unbilled hours are cash you’ve spent but can’t yet invoice. Trades, construction and retail businesses feel this most.

Debt and equipment

A new ute might cost $70,000 but only show as $14,000 a year of depreciation. Loan repayments are the same: only the interest hits profit, but the whole repayment hits cash.

Tax and super

Income tax, BAS and super are paid on a different rhythm to when you earn the money. Since 1 July 2026, under Payday Super, employers generally need super to reach employees’ funds within 7 business days of payday, rather than each quarter. That smooths things out, but it also removes a cash buffer many businesses quietly relied on.

Owner drawings

Drawings are fair reward for your work. The problem is when they’re set by habit rather than by what the business can afford after tax, debt and growth.

Worked example: a $5M electrical contractor

This is an example with realistic numbers, not a real client. An electrical contractor grows turnover from $4M to $5M and makes $450,000 net profit. The owner expects the bank balance to be up. Instead it’s down $220,000.

Here’s the cash bridge from profit to bank balance for the year.

Line	Amount
Net profit for the year	+$450,000
Add back depreciation (a non-cash expense)	+$40,000
Debtors grew as sales grew (55 debtor days on higher turnover)	−$150,000
More stock and work in progress	−$60,000
Loan principal repayments	−$90,000
New van and test equipment	−$120,000
Income tax paid on last year’s profit	−$110,000
Owner drawings	−$180,000
Change in bank balance	−$220,000

Nothing here is a disaster on its own. Together, they turn a good year into a stressful one.

Now look at one lever. If the business brings debtor days down from 55 to 40, it frees about $205,000 ($5,000,000 ÷ 365 × 15 days). That nearly covers the whole shortfall, with no new loan and no cut to drawings.

Drawing up this bridge is a core part of a Comprehensive Business Review, because it shows the owner which lever matters most.

How do you find out where your cash went?

You find out by building a cash bridge from last year’s profit to the change in your bank balance. You can do a rough version yourself with your balance sheet and profit and loss.

Take your net profit for the year from the profit and loss.
Add back depreciation and any other non-cash expenses.
Compare debtors at the start and end of the year. Subtract any increase.
Do the same for stock and work in progress.
Subtract loan principal repayments, asset purchases, income tax paid and owner drawings.
Check the total against the actual change in your bank balance. If it’s far off, ask your bookkeeper what’s missing, such as GST or super timing.

Then calculate your debtor days: debtors ÷ annual sales × 365. Track it every month. If it’s creeping up, cash will tighten before profit ever shows a problem.

How can you fix cash flow without borrowing?

You fix it by shortening the time between doing the work and getting paid, and by matching big cash outflows to cash you actually have. Most of these changes cost nothing.

Invoice the day the work is done. Every day of delay is a day added to debtor days.
Take deposits and progress payments. On larger jobs, bill in stages so you’re not funding the whole job.
Follow up early and consistently. A friendly reminder before the due date works better than a firm one 30 days after.
Make paying easy. Online payment links on every invoice and direct debit for regular customers.
Review stock levels. Slow-moving stock is cash on a shelf.
Plan asset purchases. Time big buys for months when cash is strong, or match finance terms to the asset’s life.
Set drawings from a forecast. Work out what’s left after tax, debt and growth, then pay yourself from that.

If you’re already behind with the ATO, talk to them early. The ATO offers payment plans, but interest accrues and you need to keep lodging and paying new amounts on time.

Is it a cash problem or a profit problem?

Sometimes cash is tight because the business isn’t as profitable as it looks. If your bridge shows cash going into debtors and stock, it’s mostly a timing problem. If cash is short even after those are under control, check your margins.

Common signs of a profit problem behind the cash problem include jobs running over quote, wages creeping up as a share of revenue, and prices that haven’t moved in two years. Our guide on how to improve profit margins covers where to look.

Our clients have seen an average 29% lift in profit and 17% lift in cash flow working with us. Results vary.

Common questions

Can a business be profitable and still go broke?

Yes. A business can show a profit every year and still fail because it can’t pay wages, suppliers or the ATO when they fall due. Fast growth with slow-paying customers is the most common cause.

Does depreciation affect cash flow?

No, depreciation itself doesn’t use cash. The cash left when you bought or financed the asset. That’s why you add depreciation back when you reconcile profit to cash.

Why is my bank balance lower than my profit?

Usually because cash is tied up in unpaid invoices, stock, loan principal, asset purchases, tax or drawings. A cash bridge shows which of these is the biggest drain, so you know what to fix first.

Should I track profit or cash flow first?

Track both, monthly. Cash flow tells you whether you can pay the bills in the next few months, and profit tells you whether the business model works. Watching only one is how owners get surprised.

What debtor days should a business aim for?

It depends on your terms and industry, but a good target is close to your stated payment terms. If your terms are 30 days and your debtor days are 55, there’s cash to recover.

Want a clear plan for your cash flow?

If your business is profitable but cash still feels tight, we can build your cash bridge and show you which levers will free up the most cash. Book a free call or see how our virtual CFO packages keep cash and profit in view every month.

Prefer to start on your own? Grab our free Excel template, Run your business with Complete Financial Clarity.

Why profitable businesses still run out of cash