Cash Flow Basics for Australian Small Businesses

Profit and cash are not the same thing, and plenty of otherwise healthy Australian small businesses have failed because they ran out of the second while still showing a profit on paper. Cash flow is simply the movement of money in and out of your business over time, and managing it is a discipline rather than an accounting exercise.

Why Profit Can Hide a Cash Problem

You record revenue when you invoice, but the money arrives later. In the gap you still pay wages, rent, suppliers and tax. If your customers take sixty days to pay while your suppliers want payment in fourteen, growth itself can drain your bank account — the more you sell, the bigger the gap becomes.

Common warning signs include paying suppliers late, using a credit card to cover routine bills, dipping into tax money set aside for the Australian Taxation Office, and delaying your own superannuation contributions. Any of these means the business is funding operations with money that belongs elsewhere.

Get the Fundamentals Right

Four habits do most of the heavy lifting:

• Invoice immediately. Send the invoice the day the job is done, not at month end.
• Set clear terms. State your payment terms in writing and on every invoice, and follow up politely but promptly.
• Separate tax money. If you are registered for GST, the GST you collect is not your revenue. Move it to a separate account as it comes in.
• Know your break-even. Understand the monthly revenue you need before you cover fixed costs.

If bookkeeping is where things fall down, outsourcing part of it early is often cheaper than fixing the mess later. A guide to affordable bookkeeping services for startups covers what to look for and what to hand over.

Build a Simple Forecast

You do not need complex software. A spreadsheet with one column per week for the next thirteen weeks is enough. List expected receipts by the date you genuinely expect them, not the date on the invoice, then list the payments you must make: wages, super, rent, loan repayments, supplier invoices, GST and tax instalments. The running balance tells you whether you have a problem coming and roughly when.

Update it weekly. The value is not in the forecast being perfect — it is in spotting the crunch six weeks out, when you still have options such as chasing debtors, delaying a purchase or arranging finance.

Working With Lenders and Finance

Some businesses need external funding to bridge timing gaps, particularly those in construction or project-based work where costs land long before the final payment. Facilities such as progress payment finance exist precisely to smooth this. Construction finance and cash flow is a useful read if your work is milestone-based, though the principles of matching funding to project stages apply more broadly.

Managing Debtors Without Damaging Relationships

Most late payment is disorganisation rather than bad faith. Make it easy to pay: bank details on the invoice, card or direct debit options, and a named contact for queries. Send a friendly reminder a few days before the due date, a firmer one shortly after, and a phone call if it is still outstanding. Keep a written record of every contact.

For repeat customers who consistently pay late, consider deposits, staged payments or shorter terms. It is reasonable to ask for a deposit on large jobs, and it protects both parties.

Keep Personal and Business Money Apart

A separate business account is not just good practice — it makes your records, your tax position and your lending conversations far simpler. Pay yourself a regular amount rather than drawing whatever is available, and build a buffer for the quiet months that every seasonal business experiences.

Frequently Asked Questions

How much cash buffer should a small business hold?

Many advisers suggest aiming for enough to cover two to three months of fixed costs, though the right figure depends on how predictable your revenue is and how quickly customers pay. Businesses with lumpy or seasonal income should hold more.

Is GST part of my income?

No. If you are registered for GST, the tax you charge is collected on behalf of the ATO and passed on through your business activity statement. Treating it as revenue is one of the most common causes of a surprise tax bill.

Should I chase late payers aggressively?

Be consistent and firm but professional. A clear process — reminder, second reminder, phone call, then formal options — protects the relationship better than sporadic frustration, and it signals that your terms are real.

Frequently asked questions

How much cash buffer should a small business hold?

Many advisers suggest aiming for enough to cover two to three months of fixed costs, though the right figure depends on how predictable your revenue is and how quickly customers pay. Businesses with lumpy or seasonal income should hold more.

Is GST part of my income?

No. If you are registered for GST, the tax you charge is collected on behalf of the ATO and passed on through your business activity statement. Treating it as revenue is one of the most common causes of a surprise tax bill.

Should I chase late payers aggressively?

Be consistent and firm but professional. A clear process — reminder, second reminder, phone call, then formal options — protects the relationship better than sporadic frustration, and it signals that your terms are real.