The hardest month for small business cash is not the quiet one. It is the busy one before it. December is when every creditor asks at once, and January is when the money stops arriving. Most owners plan for the slump. Fewer plan for the queue.
The queue forms in the same fortnight
Suppliers want accounts cleared before they close for the break. Staff are owed a final pay run, leave paid in advance and, in a good year, a bonus. The landlord's January rent falls due while the doors are shut. None of that is new.
Two items on the list deserve a closer look this year. The first is tax. The Australian Taxation Office sets the due date for a monthly activity statement at the 21st day of the following month, so November's falls on 21 December, four days before Christmas.
The second is superannuation. Payday Super started on 1 July 2026. Under the ATO's rules, a contribution is on time only if the employee's fund receives it within seven business days of payday. Earnings paid up to 30 June sat under the old quarterly rules, which let the December quarter's super wait until after the holidays. This is the first December in which super leaves the account with every pay run.
For a business with a dozen staff, that changes the shape of the month. A buffer many owners leaned on without ever naming it has gone.
The most expensive creditor to keep waiting
When the queue is longer than the bank balance, the tax office is usually the creditor that gets pushed back, because it is the slowest to chase. That choice has a price. The ATO's general interest charge for the October to December 2026 quarter is 11.51% a year, calculated daily.
It is also a crowded position. The Auditor-General's Report No. 45 of 2025-26 found small businesses held A$35.9 billion of the A$54.2 billion in collectable tax debt.
An unpaid tax bill does not stay a tax bill forever. It can turn into a director penalty notice or a statutory demand, and a company served with a demand has 21 days to respond. It is worth knowing how a winding-up application starts well before one is on the table, because the cheapest options all sit at the front of that timeline.
Then the receipts stop
Customers close. Accounts payable teams go on leave. An invoice sent on 15 December is often not opened until the third week of January. So the business pays out for six weeks against two or three weeks of money coming in.
The Reserve Bank's Financial Stability Review of October 2026 says smaller businesses are already under more cash flow pressure than larger ones on measures of overdue trade credit. December is when that pressure moves down the chain. Your debtor's queue becomes your late payment.
What a lender sees in January
Most owners who need funding to cover the gap apply in January, when the gap is visible. That is the worst moment to ask. A credit team reading bank statements in the middle of January sees large outflows, a low balance and thin deposits. If there is an overdue tax balance, it reads as a cash problem, whatever the reason behind it.
Ask the same lender in November and the statements show spring trading. Same business. Different file.
There is a practical problem too. Lenders, valuers and solicitors thin out over the break like everyone else, so a request that would take days in November can take weeks across the new year.
What to do in November
Map the eight weeks from 1 December, week by week. Put every outgoing in the week it leaves, including super with each pay run, and every receipt in the week it is likely to land rather than the week it is due.
Invoice early and chase before the middle of December. A reminder sent on the 10th gets paid. One sent on the 22nd gets read in January.
Ask suppliers for terms now. A supplier asked in November has time to say yes. One asked in the week it closes will say no by default.
Arrange any facility before it is needed. A line of credit or an overdraft set up in November is assessed on good months, and it only has to be drawn if the gap opens.
Deal with the tax position before the due date, not after it. Lenders read an arrangement that is being met very differently from a balance nobody has touched.
Know the exit on anything short term. Borrowing to clear a tax bill moves the debt. It does not remove it. If February's receipts cannot repay it, the facility is the wrong size or the wrong type.
Count the queue
January gets the blame, but December does the damage. The businesses that come through it are rarely the ones with the most cash. They are the ones that counted the queue in November and knew who was getting paid, in what order, and from what.
This piece is general information from the lending side. Tax and super obligations, and their due dates, are a matter for the business's accountant.