More businesses fail because of cash flow problems than because of poor profit. A business can be profitable on paper while simultaneously running out of money to pay its bills. Understanding the difference — and building the habit of forecasting your cash — is one of the most protective things you can do as a business owner.

Why profit and cash are not the same thing

Profit is an accounting concept. It measures revenue minus expenses over a period of time, and it includes things like unpaid invoices you have issued but not yet received, and expenses you have incurred but not yet paid. Cash is different — it is what is actually in your bank account right now. A business can show a healthy profit while waiting on $80,000 in unpaid invoices, with wages due on Friday and a tax payment due on Monday. That is a cash crisis, not a profit problem.

This gap between profit and cash is especially pronounced for growing businesses, businesses with long payment cycles, and seasonal businesses that receive income in bursts. Understanding where the gaps are before they arrive is what forecasting is for.

What a cash flow forecast is

A cash flow forecast is a forward-looking estimate of the money you expect to receive and spend over a defined period — typically the next four to thirteen weeks, or twelve months for strategic planning. It lists expected cash inflows (payments from customers, loan proceeds) and cash outflows (wages, rent, supplier payments, tax obligations, loan repayments) week by week or month by month, showing your projected bank balance at each point. It does not need to be complicated. A simple spreadsheet with expected receipts and payments is far more valuable than nothing.

Building a simple forecast

Start with what you know. Your fixed costs — rent, wages, loan repayments, subscriptions — are predictable. List them against the dates they are due. Then look at your expected income: existing customer invoices with known payment terms, upcoming jobs or sales you have already confirmed, and a conservative estimate of new work. Your accounting software may have a cash flow report that provides a useful starting point, and tools like Xero and MYOB include basic cash flow projection features worth exploring.

Update your forecast weekly. The discipline of reviewing it regularly — comparing what you expected against what actually happened — quickly improves your accuracy and sharpens your instincts about the business.

Using your forecast to act early

The real value of a cash flow forecast is not in the spreadsheet — it is in the decisions it prompts. If your forecast shows a shortfall six weeks from now, you have six weeks to chase outstanding invoices, defer non-essential spending, arrange a short-term credit facility, or accelerate some sales. If you only discover the problem when the bank account runs dry, your options are severely limited. A forecast does not prevent cash problems — but it gives you the time and information to deal with them before they become crises.

If building a forecast from scratch feels daunting, your accountant can help you set up a simple template. Even a rough estimate — reviewed and updated weekly — is far more useful than operating on instinct alone. The habit of looking ahead is one of the most valuable disciplines any business owner can develop.