Business Advisory

Cash Flow Forecasting For Small Business: A No-Nonsense Guide

Profit is a rumour. Cash flow is a fact. Ask anyone whose "very profitable" business somehow can't make payroll on Thursday.

It's one of the most confusing moments in small business ownership: the profit and loss statement says you had a great quarter, and yet the bank account is doing an impression of a ghost town. This isn't a contradiction: it's a sign nobody's been watching cash flow, which is a completely different animal to profit.

Here's how to actually forecast it, without needing a finance degree or a nervous breakdown.

Why Profitable Businesses Still Run Out Of Cash

Profit is calculated the moment you issue an invoice. Cash arrives whenever your client feels like paying it, which, for some clients, appears to be "eventually, philosophically." Add in supplier payments, wages, loan repayments, and quarterly tax obligations landing all at once, and a genuinely profitable business can still find itself short on an ordinary Tuesday.

What A Cash Flow Forecast Actually Is

A cash flow forecast is not a crystal ball, and it's not the same document as your budget. It's a simple, rolling picture of cash coming in and cash going out over the next few weeks or months, so you can see a squeeze coming before it becomes an emergency.

Building A Simple 13-Week Cash Flow Forecast

  • 1. List every expected inflow. Confirmed invoices, recurring clients, and realistic (not hopeful) payment dates.
  • 2. List every expected outflow. Wages, rent, suppliers, loan repayments, and (this is the one people forget) upcoming BAS and tax instalments.
  • 3. Lay it out week by week. Thirteen weeks gives you enough runway to see problems coming without the forecast becoming pure guesswork.
  • 4. Update it weekly. A forecast that isn't updated is just a document you wrote once and then ignored, like a gym membership.

Common Forecasting Mistakes

  • Assuming every invoice gets paid exactly on terms (it won't).
  • Ignoring seasonal quiet periods that happen every single year, on schedule, as a surprise.
  • Forgetting tax and BAS dates until they're due next week.
  • Building the forecast once and never touching it again.

When To Get Help

If your forecast keeps showing a squeeze a few months out and you're not sure what to do about it, that's exactly the point to get advice, not after the squeeze has already arrived. If things have already gone further than a forecasting fix can solve, it might be time to look at the signs your business needs restructuring instead.

How Mr Figures Helps

Our professionals in the Financial & Business Advisory service build cash flow forecasts and scenario plans around your actual numbers, not generic templates, so you get a straight answer about what's coming, and enough runway to do something about it. If the forecast points to a bigger structural issue, our professional network is on hand to take it from there.

Not Sure Where Your Cash Flow Is Headed?

Tell us what's going on: no obligation, no judgement, and a clear next step either way.

Let's Discuss Your Situation

Cash Flow Forecasting: Common Questions

A rolling 13-week forecast is the standard for small business: long enough to capture a full BAS cycle and see a quiet season coming, but short enough that near-term weeks are based on real invoices rather than guesswork. A longer, rougher 12-month view is useful for bigger decisions but is directional rather than precise.

Profit is an accounting figure recognised when an invoice is raised, not when money moves. Cash flow is what's physically in the bank, affected by things profit ignores such as loan principal, GST held for the ATO, or upfront asset purchases. A business can be profitable on paper while cash-poor in reality.

Xero and MYOB both have short-term cash flow tools that pull from existing invoices and bank feeds, and dedicated tools like Float or Spotlight Reporting suit larger or more complex businesses. A well-built spreadsheet works just as well for most small businesses: the discipline of updating it weekly matters more than the tool.

Often, yes. Most restructuring situations show up as a widening gap in the cash flow numbers months before they become urgent, and a forecast updated regularly gives you the lead time to act early. Where the squeeze is bigger than day-to-day fixes can solve, Mr Figures can connect you with the right specialist.

This article is general information only and doesn't take into account your personal circumstances. It isn't a substitute for advice tailored to your situation. Book a consultation and we'll look at your actual numbers with you.

Related Reading