BAS quarter cash planning

The quarterly BAS is not a surprise. Its timing is known years in advance, and the amount builds up week by week as you collect GST and withhold tax from wages. Yet it is one of the most common reasons small businesses end up owing the ATO. The fix is a simple routine.

Why the BAS catches businesses out

GST is collected on most sales and sits in your account alongside everything else. PAYG withheld from wages does the same. Because the money is there, it gets used to pay suppliers, buy stock or cover a slow week. Then the BAS arrives and the money is gone.

The weekly routine

1. Open a separate tax account with your bank.
2. Each week, transfer the GST collected (less GST paid on purchases) plus PAYG withheld into it.
3. Do not touch it for anything except tax.
4. At BAS time, pay from the tax account.

If working out the exact figure each week is too fiddly, transfer a fixed share of weekly takings based on last quarter’s BAS, then true it up monthly.

Already know roughly what you need? Tell us in about a minute. There is no credit check to enquire and your details are not passed around a panel of lenders.

Keep the books current

A BAS estimated from three-month-old bookkeeping is a guess. Reconcile your accounts at least monthly so you know the running GST and PAYG figures. Most accounting software shows them on a dashboard.

Forecast a month ahead

Four weeks before the due date, estimate the bill and compare it with the tax account balance. If there is a shortfall, you still have time to collect debts, adjust supplier payments or arrange funding. Put the BAS into your 13-week forecast so it never sneaks up.

Monthly or quarterly?

	Quarterly BAS	Monthly BAS
Admin	Four lodgements a year	Twelve lodgements a year
Bill size	Larger	Smaller
Temptation to spend	Higher, money sits longer	Lower
Suits	Businesses with good discipline	Businesses that struggle with lumps

Ask your accountant whether a change suits your business.

If you cannot pay

Lodge on time regardless. Then compare options: an ATO payment plan, a draw on a line of credit or a short loan. Our page on BAS bills you cannot pay and the payment plan vs loan comparison explain the trade-offs. Remember that GIC incurred from 1 July 2025 is no longer tax deductible, which makes carrying a tax debt more expensive than it used to be.

PAYG instalments and super

PAYG instalments on business income can also appear on your BAS, and from 1 July 2026 super is due with each pay run under payday super. Build both into the weekly routine so they are covered as they fall due.

A worked illustration

A cafe turning over about $65,000 a month collects around $5,900 in GST and withholds roughly $4,200 in PAYG from staff wages. Moving about $2,300 into the tax account each week, less GST credits on purchases, means the quarter’s BAS is sitting there when it is due, rather than coming out of the same account as next week’s produce order.

Read next

• BAS bill due and short on cash: Can’t pay your BAS on time? Lodge anyway, then weigh a payment plan, a short loan or a line of credit, and learn how to avoid the next squeeze.
• ATO payment plan vs business loan: ATO payment plan vs business loan to clear a tax debt: costs, interest charges, approval, cash flow impact and when each option makes more sense.
• Surviving the January cash squeeze: Why January is so tight for many Australian businesses, and how to plan for holiday shutdowns, leave loading, slow payers and the February BAS.
• GIC is no longer tax deductible: what it means: From 1 July 2025, the ATO’s general interest charge is no longer tax deductible. What that does to the real cost of carrying a tax debt and your options.
• Business line of credit: A business line of credit gives you a limit to draw on and repay as cash flow moves. How it works, what it costs in practice and who it suits best.

Key terms, in plain English

• Line of credit: an approved limit the business can draw, repay and draw again, usually paying interest only on the drawn balance.
• BAS: the business activity statement used to report and pay GST, PAYG withholding and other amounts to the ATO.
• General interest charge: the ATO’s interest on overdue tax, set quarterly and compounding daily; not deductible when incurred from 1 July 2025.
• PAYG withholding: tax withheld from wages and other payments, which the business passes on to the ATO.

Check these before you commit

• What is the full cost of this finance in dollars over the whole term?
• Can I repay early, and will that cost extra?
• Is there a fee on the unused part of the limit?
• Who needs to sign or guarantee the loan?
• What exactly triggers a default under the contract?

Advice worth getting

Before committing, run the plan past your accountant or bookkeeper. They can check that the amount matches the real need, that the repayments fit your cash flow forecast and that nothing in your tax position will cause a surprise. If property or guarantees are involved, everyone signing should understand what they are agreeing to, and some may want independent legal advice.

In a nutshell

• GST and PAYG withholding are the ATO’s money, held by you
• Put them in a separate account every week
• Estimate the BAS a month before it is due
• Lodge on time even if you cannot pay in full

From enquiry to an answer

The process is built to avoid wasted time. The enquiry asks only what matters. The first call gathers what is missing. Statements are shared securely online, documents are signed electronically and any property security is prepared in parallel. Straightforward files can be approved within the hour, and funds can land within 24 hours once everything is signed. More complex files take a little longer, and you will be told why. Where a step is waiting on someone else, such as a co-owner’s signature, we will tell you so it can be chased.

When borrowing helps, and when it does not

Ask yourself where the repayment will come from. A customer payment, the next peak season, a property sale or steady trading are all real sources. Hope is not. If you can point to the money that will clear the loan, and roughly when, funding is likely to help. If you cannot, talk to your accountant about the underlying numbers first.

Before you send the enquiry

Have these within reach and the process moves quickly, because each one answers a question the assessor would otherwise have to come back and ask:

• ABN, business structure and how long you have traded.
• Recent business bank statements, ideally shared online.
• What the money is for and how it will be repaid.
• Any tax debt, default or arrears you should mention up front.
• Contact details for anyone else who would need to sign.

A quick word on the enquiry form

Every question on the form is there for a reason: it changes which funding fits. Describe the business as it stands today rather than the version you expect in six months. Mention any default, tax debt or recent decline in the notes. We look at those situations all the time, and knowing early lets us head straight for options that can actually work.

Let’s see what fits

To see what is available for your business, complete the 60-second enquiry. It is free, there is no credit check and it goes to one team, not a lead marketplace. Please be precise with the amount, turnover and credit history. Those answers shape everything that follows, and getting them right is the single best way to get a fast, useful answer.