How to manage business cash flow, week by week

Good cash flow management is mostly unglamorous: a routine, a couple of extra bank accounts and the habit of looking a few weeks ahead. Owners who do it well rarely have a secret. They just notice problems four weeks out instead of four days out, which is the difference between a phone call to a customer and a scramble to make payroll.

This guide sets out a working system you can adopt this week. It suits sole traders and businesses with a few dozen staff alike; the numbers change, the habits don’t.

What are you actually managing?

Cash flow has four levers. Every useful tactic pulls one of them:

Lever	What it means	Typical moves
Money in	How much arrives, and how quickly	Deposits, prompt invoicing, shorter terms, card and bank transfer options
Money out	How much leaves	Cutting waste, renegotiating contracts, buying less stock more often
Timing	When each dollar moves	Paying suppliers on the due date, aligning payroll with receipts, spreading annual bills
Buffer	What absorbs the gaps	A cash reserve, an overdraft or line of credit, invoice finance

Most owners concentrate on the first two because they feel like “running the business”. The third is where the quickest wins usually hide. A business that collects in 45 days and pays in 14 is funding its customers out of its own pocket, however profitable it is. The working capital cycle is the name for that gap, and shortening it releases cash without a single extra sale.

How should you set up your bank accounts?

Structure does a lot of the discipline for you. A simple three-account setup works for most small businesses:

1. Operating account. Customer receipts land here; wages, rent and suppliers are paid from here.
2. Tax account. Each week, move across the GST you’ve collected, the PAYG you’ve withheld from wages, and super. This money was never yours to spend. Seeing it in a separate balance stops the classic trap of a healthy-looking account that is really holding the next BAS.
3. Buffer account. A slowly growing reserve, ideally several weeks of fixed costs, that you touch only for genuine gaps.

The tax account earns its keep even more this financial year. Payday Super, in force from the start of 2026–27, generally gives employers a seven-business-day window after every pay run to get contributions into staff funds; the old quarterly cycle is gone. That turns super from a lump you could plan around into a steady weekly or fortnightly outgoing. The ATO’s free small business clearing house shut at the same time, so if you relied on it, check your payroll software is now handling contributions. Owners who used to rely on the quarterly lag as a short-term float have lost it; better to see that in your forecast than discover it in your bank balance.

What does a weekly cash routine look like?

Pick a fixed slot, say Monday morning before the phones start, and work through the same short list every time. Thirty minutes is usually enough.

• Check actual balances in every account, including the tax account.
• Roll the forecast forward a week: drop the week just gone, add a new one at the far end. The layout is set out in our 13-week cash flow forecast guide.
• Compare last week’s forecast with what happened. Big misses tell you which assumptions to fix.
• Review the debtor list. Who is overdue, who is about to be, and who needs a call today?
• Review bills due. Schedule payments for their due date, not the day they arrive.
• Move tax money across to the tax account.
• Flag the lowest point in the next eight to thirteen weeks. If it dips below your comfort level, decide now what you’ll do about it.

That last step is the whole point. A forecast that shows a tight week in mid-December gives you six weeks to chase a debtor, delay a purchase or line up a facility. Without it, you find out on the day.

How do you bring money in sooner?

The fastest improvements usually come from the receivables side:

• Send the invoice as soon as the job is finished. Batching invoices into a month-end run quietly adds weeks to every collection.
• Ask for money upfront on bigger jobs, either as a deposit or staged payments.
• Make paying easy: bank details and a payment link on every invoice, and card acceptance where it suits.
• Chase on a timetable, with a reminder before the due date and a phone call soon after.
• Check new customers before extending credit, and set a limit.

Our guide on how to get customers to pay faster goes deeper, including which large Australian businesses report paying small suppliers within 20 days.

Card costs changed this year too. Following the Reserve Bank’s review, surcharges on eftpos, Mastercard and Visa payments were removed from 1 October 2026, alongside lower caps on the wholesale fees behind most domestic card payments. If you previously added a surcharge, your card fees now come out of your margin unless they’re built into your prices. That’s worth a look at your pricing, because a cost that was passed on is now yours.

Thinking about a safety net while trading is healthy? Tell us a little about the business and one of our team will give you a straight answer on what’s achievable.

How do you control money going out?

Spending discipline isn’t just cost cutting. It’s mainly about not paying earlier than you need to, and not locking cash into things that sit still.

Use the terms you’re given. If a supplier offers 30 days, pay on day 28 to 30, not on receipt. Scheduling payments in your banking or accounting software makes this automatic.

Ask for better terms. Long-standing customers with a good payment record can often negotiate from 14 to 30 days. The guide on negotiating better supplier terms covers how to frame that conversation.

Watch stock. Every carton in the storeroom is money you can’t use for anything else. Ordering smaller quantities more often can cost a little more per unit but frees cash for wages and rent.

Spread annual bills. Insurance, registrations and software subscriptions can often be paid monthly, which smooths the big spikes.

Keep the ATO payment method current. Card payments to the tax office end once November 2026 is over. Some owners paid BAS on a card to buy a few weeks; that option is ending, so plan BAS from the tax account instead.

Which numbers should you track?

You don’t need a dashboard of thirty metrics. Five do most of the work:

Number	What it tells you	Where to check
Lowest forecast balance (next 13 weeks)	Whether a gap is coming and roughly when	Your weekly forecast
Debtor days	Average wait between invoice and payment	Accounting software ageing report; see debtor days
Creditor days	Your own average wait before settling supplier bills	Accounting software
Cash runway	How many weeks you could cover costs with no new receipts	Cash runway calculator
Working capital ratio	Current assets against current liabilities	Working capital ratio calculator

Watch the trend more than the level. Debtor days drifting from 34 to 48 over two quarters is a warning, even if the business still feels busy.

A worked example: two shops, one cash habit

This is an illustration.

A family bakery runs two shops in Adelaide’s eastern suburbs, with turnover around $1.4m and eleven staff. Profit is steady, yet the owners find themselves short every January and every BAS month.

They make three changes. First, a tax account: every Monday they transfer roughly 9% of the previous week’s takings (their rough GST estimate on taxable sales, checked against the BAS each quarter) plus withheld PAYG and the week’s super. Second, a 13-week forecast reviewed each Monday. Third, they move two café wholesale customers from 30-day terms to fortnightly invoicing with payment in seven days.

Within one quarter, the BAS is paid from the tax account without touching the operating balance. The forecast shows January’s dip eight weeks early, so they set up a modest line of credit in November while the books look strong, and draw on it for three weeks in January. The wholesale change alone brings about $11k forward, permanently.

Nothing about the bakery’s sales changed. Only the timing and visibility did.

Where does finance fit into cash flow management?

Finance smooths timing gaps; it can’t rescue a business whose costs outrun its sales. Used that way, it’s a sensible part of the system.

Banks are often the cheapest source of standby money. If you have a solid trading record and security, a bank overdraft or line of credit is well worth applying for while times are good; don’t wait until a tight month. Where a bank says no, or can’t move quickly enough, there are other routes:

• For gaps that keep recurring, a non-bank business line of credit sized on your turnover
• When the real culprit is trade customers who pay late, invoice finance
• For a single need with an obvious payback, such as a big order or seasonal stock, a working capital loan

If you’re already in a squeeze, the triage steps in how to fix a cash flow problem fast come first.

Want a buffer in place before the next tight month?

Owners who manage cash well tend to have one thing in common: they arrange their safety net while they don’t need it. A facility arranged during a strong quarter is cheap to keep open and can save a stressful week later.

If you’d like to see what’s available for your business, the enquiry takes around a minute, and asking won’t leave any mark on your credit history. Your information isn’t distributed across dozens of finance companies, which means no barrage of unknown numbers ringing. A member of the team works through your answers and gives you a call. Use your real turnover and current balances on the form, as accurate details help us suggest the right facility the first time round.

Find out what standby finance you could get →