Funding a BAS bill fast, without letting it become a tax debt

Why does a BAS bill catch so many businesses short?

Because the GST in your bank account doesn’t feel like someone else’s money until the BAS arrives. Over a quarter, GST collected from customers mixes with everything else and gets spent on wages, stock and rent. Then the bill lands, often in a month when sales are slow, and the cash simply isn’t there.

It happens to busy, profitable businesses all the time, especially ones that are growing. More sales mean more GST collected, and growth eats cash.

What happens if I don’t pay the BAS on time?

The unpaid amount becomes an ATO debt. General interest charge starts accruing daily, and from 1 July 2025 that interest is no longer tax deductible. If the debt grows or isn’t dealt with, the ATO can move to firmer action. Our page on paying ATO debt explains those steps.

Even if you can’t pay, lodge on time. That avoids failure-to-lodge penalties and keeps your record clean, and it gives you and any lender a clear number to work with.

How fast can a BAS bill be funded?

Your situation	Fast route	Speed possible
Trading business, smaller bill	Unsecured cash-flow loan	Same day possible
Recurring quarterly shortfall	Line of credit	Immediate once set up
Larger bill, property available	Caveat or second mortgage	Same day for $20k–$250k
BAS plus older tax debt	Property-secured loan	Up to $5m in 24–48h

How much should I borrow?

Borrow the shortfall, not the whole bill, unless you genuinely have nothing to put towards it. Then match the term to when the cash returns. If you’ll be flush again in two months when a big customer pays, a two-month gap needs a short loan.

Illustrative example: a Townsville electrical wholesaler has a $68,000 quarterly BAS due in nine days. There’s $30,000 available after wages. A $40,000 unsecured cash-flow loan covers the gap with a small buffer, and could be funded the same day once bank statements are in. It’s repaid over the following weeks as receivables clear.

Use the Cash Gap Calculator to work out your own number.

Is a payment plan with the ATO an alternative?

Sometimes. The ATO can agree to pay BAS debts in instalments, but interest keeps building on the outstanding amount, and the plan must be kept up. For a short timing gap, a loan that pays the bill on time and is repaid quickly can be simpler. For a larger debt, compare both with your accountant.

How do I stop the BAS ambush next quarter?

• Separate the tax money. Open a second business account and move GST and PAYG withholding into it each week.
• Forecast early. Estimate the BAS a month before it’s due, not the week before.
• Watch for growth spurts. A big jump in sales means a big jump in GST collected.
• Talk to your BAS agent. Ask about reporting cycles that match your cash flow.

Our tax-time cash crunch guide and the EOFY page cover the bigger annual picture.

What documents do I need?

Your ABN and photo ID, recent business bank statements, your BAS or an ATO statement showing the amount, and property details if you’re using security. That’s usually enough to get moving. Send your enquiry and the specialist will confirm the exact list.

What does a lender look for on a BAS loan?

Mostly the same things as any short cash-flow loan, with a tax lens on top. The lender will want to see that the BAS has been lodged or is about to be, what the amount is and where it came from, and that your recent statements show the trading that produced the GST. A sudden spike in GST after a record quarter is easy to explain and usually reassuring: it means sales were strong. A string of unpaid quarters tells a different story, so if older amounts are also owing, mention them at the start.

It also helps to show when cash will return. A short list of outstanding invoices with expected payment dates turns a vague promise into a clear repayment plan. That is often the difference between a quick yes and a round of extra questions.

Monthly or quarterly reporters

Businesses that report GST monthly face smaller, more frequent bills, which suits a line of credit drawn and repaid each month. Quarterly reporters face bigger, less frequent hits, which suit a short loan sized to the single quarter. Your BAS agent can tell you which cycle you are on and whether a change might better suit your cash flow.

See if your BAS can be paid on time

There’s no credit check when you first enquire, so you can ask without it affecting your file. We won’t send your details out to a list of lenders. A real person reads your enquiry and calls you with the quickest way to get the BAS paid.

Please give the real BAS amount, your state and whether there’s property involved, so we can match you properly the first time. See if you qualify.