What's the difference between profit and cashflow, and why does it matter?

Cashflow Management

Profit is what the business made on paper, revenue minus costs, the moment a job is invoiced. Cashflow is what's actually sitting in the bank account on the day you need to pay something. A business can show strong, genuine profit and still be scrambling to cover payroll in the same month, because those two numbers measure completely different things, at completely different times.

What that looks like at real numbers

Take a business turning over $1.2 million a year with around $270,000 in profit on the P&L, a genuinely strong result by any measure. On paper, that's an obviously healthy business. In the bank account, the picture can look very different. If clients are paying on 30 to 60 day terms, a large share of that $270,000 is sitting as unpaid invoices at any given moment, work that's done, billed, and profitable, but not yet cash. Wages are still due weekly. Suppliers are due on their own terms. BAS and super are due on fixed dates, regardless of what's actually landed in the account that week.

Add GST sitting in the same account as everything else, instead of set aside the moment it's collected, and the gap widens further. Part of that $270,000 profit figure is GST the business collected on the ATO's behalf, not the business's own money, sitting in the same account as real profit and easy to spend by mistake before the BAS bill lands.

Why a genuinely profitable business still runs short

The shortfall isn't a sign the business is struggling. It's a sign the timing between earning and receiving hasn't been managed on purpose. A business bringing in $270,000 profit a year that isn't tracking the gap between invoiced and collected can find itself unable to comfortably make payroll in a quiet month, while a smaller, less profitable business with tighter payment terms and tax held aside separately never hits the problem at all. Profit tells you the business model works. Cashflow tells you whether this month's bills get paid without a scramble.

This gets sharper as a business grows, not milder. More revenue on longer payment terms means a bigger dollar amount sitting as unpaid invoices at any moment, so the businesses that feel this hardest are often the ones doing well on paper, not the ones doing badly.

Who this actually catches out

It shows up hardest in businesses with long project or payment cycles, construction and trade contracting with progress payments, professional services billing monthly in arrears, anything with 30 to 60 day terms as standard rather than the exception. A business that's just won a bigger contract or taken on a bigger client is often the most exposed, because the size of the gap between invoicing and collecting scales with the size of the work, right when the business can least afford a cash squeeze.

What it actually costs to get wrong

This isn't an abstract risk. A missed BAS payment because the GST wasn't set aside becomes an ATO payment plan with interest attached, a cost that didn't need to exist. A tight month that forces a scramble for payroll damages something harder to fix than money, staff trust that the business is stable. Neither of those happens because the business isn't profitable enough. Both happen because the gap between profit and cash was never tracked on purpose.

What actually closes the gap

A rolling 90-day cashflow forecast shows which weeks are tight before they arrive, not the day a payment bounces. Splitting GST and tax into a separate account the moment income lands means that money is never mistaken for spendable profit. Tightening payment terms and chasing overdue invoices sooner closes most of the remaining gap, without changing how much work the business is winning or how profitable it actually is.

A separate account structure that splits tax, GST and wage the moment income lands, rather than weeks or months later when the bill is due, removes the guesswork entirely. Reviewed quarterly as the business changes, not set once and forgotten, it keeps the system tight even as revenue, payment terms or the client mix shift.

Real cashflow management isn't about making more profit. It's about making sure the profit the business already earns is actually there, as cash, when it's needed.