How do I set up a cash flow forecast for my small business?

Learn how to set up a small business cash flow forecast. Track trade income, super, and ATO BAS payments across a rolling 13-week schedule.

Quick answer

To set up a cash flow forecast, track your opening cash balance and project all cash receipts and payments over a rolling 13-week schedule. Include actual debtor collection dates, supplier trade terms, and statutory ATO obligations like BAS and superannuation. This provides an accurate outlook of physical cash reserves.

Skill level
General guidance
Time
Varies
Trade
Bookkeeping & Cashflow
Updated
3 November 2026

Tools you will need

  • Xero Business Edition - Cloud Accounting Platform
  • MYOB Business Pro - Cloud Accounting and Payroll Software
  • Float Cash Flow - Add-on Forecasting Engine
  • Fathom - Financial Analysis and Cash Forecasting Tool
  • Fergus Job Management - Trade Quoting and Invoicing Software
  • Tradify - Trade Business Management Platform
  • Microsoft Excel 365 - 13-Week Cash Flow Spreadsheet Template

Why is a cash flow forecast important for Australian tradies?

A cash flow forecast is a practical way to see whether enough money is likely to be in the bank to cover upcoming bills, wages, super and tax obligations. For Australian small business owners, sole traders and contractors, it matters because profitable businesses can still run into trouble if cash arrives late or major payments fall due at the wrong time.

What key concepts should Australian tradies understand about cash flow forecasting?

A cash flow forecast is different from a profit and loss report. Profit shows income and expenses for accounting purposes, while cash flow focuses on when money actually comes in and goes out of your bank account.
Good forecasts usually start with expected cash receipts and cash payments over a set period, often weekly or monthly. Common items include customer payments, supplier bills, wages, superannuation, rent, software subscriptions, loan repayments and tax set-asides such as GST and PAYG withholding.
Timing matters as much as totals. A business may have strong sales on paper, but if customers pay slowly and wages or supplier accounts are due sooner, cash pressure can build quickly.
Your forecast should be based on real business patterns where possible, not best-case assumptions. Bank statements, debtor reports, creditor reports, payroll records and prior BAS periods can all help build a more realistic view.
The forecast needs regular review. If sales change, a large invoice is delayed, or ATO obligations are coming up, the numbers should be updated so you can make decisions early rather than reacting when cash is already tight.

What would a bookkeeping specialist review when setting up a cash flow forecast for an Australian tradie?

Your actual cash cycle, including how long customers take to pay, when suppliers must be paid and whether there are seasonal peaks or quieter months.
Payroll and staffing obligations, including wages, superannuation guarantee timing, leave accruals and Single Touch Payroll reporting requirements under ATO rules, with Fair Work obligations also in mind.
Tax and compliance cash needs, such as GST, PAYG withholding, income tax instalments and any payment arrangements that may affect short-term cash planning.
Whether your bookkeeping system in Xero, MYOB or QuickBooks is producing reliable reports, and whether the chart of accounts, bank feeds and reconciliations are clean enough to support forecasting.
Business-specific pressures such as contractor income variability, loan repayments, equipment purchases, owner drawings and one-off projects that can distort a simple forecast.

Common Costly Mistakes

Confusing sales invoices with cash in the bank and assuming all issued invoices will be paid on time.
Forgetting irregular but significant payments like BAS, super, annual software renewals, insurance or loan commitments.
Building a forecast from incomplete bookkeeping or unreconciled bank accounts, which can make the whole model unreliable.
Treating the forecast as a one-off exercise instead of updating it as trading conditions change.

When To Get Professional Help

If you are worried about covering wages, super, supplier payments or ATO liabilities in the next few weeks or months, it is usually time to get help. DIY forecasting often stops being enough when cash flow is uneven, payroll is involved, or your bookkeeping data is not clean enough to rely on for decisions.

Talk To A Specialist

If you want a clearer view of upcoming cash pressure points, a bookkeeping health check can help you understand what your numbers are really saying and where the gaps are. A bookkeeper or registered BAS agent can review your records, forecasting process and reporting setup so you can plan with more confidence: /finance/enquire?service=bookkeeping

Frequently Asked Questions

What is the difference between a cash flow forecast and a budget?

A budget is usually a broader plan for revenue and expenses over a period, while a cash flow forecast focuses on when cash will actually move in and out of the business. For day-to-day decision-making, the forecast is often more useful when you are managing upcoming bills and payment timing.

How far ahead should I forecast cash flow for a small business?

That depends on the business, but many small businesses monitor short-term cash weekly and look further ahead monthly. A specialist will usually consider your trading cycle, payroll commitments, supplier terms and tax deadlines when deciding what forecasting window is practical.

Can I use Xero, MYOB or QuickBooks for cash flow forecasting?

These platforms can support forecasting and cash visibility, but the quality of the result depends on the quality of your bookkeeping data. If bank reconciliations, coding or payroll records are inaccurate, the forecast may be misleading even if the software is working properly.

Should I include GST, BAS and super in a cash flow forecast?

Generally, yes. These obligations can create major cash pressure if they are not planned for, especially where trading income looks healthy but cash has already been spent elsewhere. The ATO provides guidance on GST, PAYG withholding, STP and super obligations, and those amounts should usually be considered in any realistic forecast.

Do I need a bookkeeper to set up a cash flow forecast?

Not every business needs full ongoing support, but many owners benefit from having a bookkeeper or registered BAS agent check that the underlying figures are reliable. If wages, STP, super, BAS or complex payment timing are involved, a professional review can be a sensible next step.

Important — General Information Only

This is general information only, not personal bookkeeping & cashflow advice. It does not take into account your objectives, financial situation or needs, and you should consider your own circumstances and seek advice from an appropriately licensed or registered professional before acting. For Australian compliance matters, check current guidance from the ATO, Fair Work and the Tax Practitioners Board, particularly where BAS, STP, payroll, superannuation or registered BAS agent services are involved.

Frequently asked questions

How do I set up a cash flow forecast for a trade business?
To set up a cash flow forecast, map your opening bank balance, project actual customer payment dates, and list scheduled outgoings over a rolling 13-week period. Include mandatory Australian outgoings such as quarterly BAS, PAYG withholding, supplier trade accounts, and the 11.5% Superannuation Guarantee to identify working capital shortfalls before they occur.
What is the difference between a cash flow forecast and a profit and loss statement?
A profit and loss statement records income earned and expenses incurred over a period, regardless of when cash changes hands. In contrast, a cash flow forecast tracks the actual timing of physical bank deposits and withdrawals. A trade business can show a paper profit while simultaneously running out of cash to pay bills.
Should GST and superannuation be included in cash flow projections?
Yes, GST and superannuation must always be factored into trade cash flow forecasts. The 10% GST collected on client invoices is not business income, and employer super contributions are mandatory outgoings. Failing to isolate and forecast quarterly ATO Business Activity Statements and super clearing house deadlines frequently triggers severe cash crunches.
How far ahead should an Australian tradie forecast cash flow?
A rolling 13-week forecast is standard practice for Australian trade businesses. This three-month timeframe covers standard supplier payment terms, client debtor cycles, monthly wages, and at least one full quarterly BAS and super cycle. Seasonal contractors should supplement this short-term view with a broader 12-month operational forecast.
Can trade software like Xero, MYOB, or Fergus manage cash forecasting?
Job management and accounting software like Fergus, Tradify, Xero, and MYOB provide the foundational data for cash forecasts. However, they rely on daily bank reconciliations and realistic customer payment terms. For automated forward projections, connect accounting platforms directly to dedicated cash flow engines like Float or Fathom.
How long must Australian businesses retain cash flow and tax records?
Under Australian Taxation Office regulations, small businesses must retain all financial and tax records for a minimum of five years from the date of assessment. This includes invoices, bank statements, receipts, and Single Touch Payroll records. Keeping clear digital copies ensures historical data remains accessible for accurate year-on-year forecasting.

Written by Tally, the Bookkeeping & Cashflow specialist at QLD.Tools.