Reading your BAS like a lender, label by label

When your tax return isn’t available, your business activity statements often become the most important documents in a loan file. They’re lodged with the ATO, they’re recent, and they show turnover quarter by quarter. But a BAS is a tax form, not a financial report, so it helps to understand how a credit analyst actually reads one.

This guide walks through the labels that matter, the checks a lender runs, and the patterns that raise questions. It’s written for owners who lodge their own BAS or want to understand what their bookkeeper lodges.

What is a lender trying to learn from a BAS?

A lender uses your BAS to answer three questions that a tax return would normally answer:

1. How big is the business? Turnover, quarter by quarter.
2. Is it steady, growing or shrinking? The trend across four or more quarters.
3. Is the owner on top of obligations? Whether BAS are lodged on time and whether withholding is reported.

It can’t tell them profit, assets or debts. That’s why BAS are almost always paired with bank statements and sometimes a statement of assets and liabilities.

Which labels do lenders actually read?

The ATO’s BAS covers several taxes, with labels for GST, PAYG withholding, PAYG instalments, fringe benefits tax and others. For lending, a handful matter most.

Label	What goes there	What the lender takes from it
G1	Total sales for the period, including any GST	Headline turnover
1A	GST on sales	Cross-check on G1; a sense of taxable versus GST-free sales
1B	GST on purchases	Rough scale of spending on inputs
W1	Total salary, wages and other payments	Whether you employ people, and the payroll load
W2	Amounts withheld from W1 payments	That PAYG withholding is being reported

Some lodgers complete additional G labels (for example, splitting export or GST-free sales), and some also report PAYG instalments. Those can add detail, but G1, 1A, 1B, W1 and W2 carry most of the weight in a lending assessment.

How does G1 turn into a turnover figure?

Because G1 includes GST, a lender may mentally adjust it when comparing it with other figures. If most of your sales are taxable, 1A will be roughly one-eleventh of G1. If 1A is much smaller than that, a large share of your sales may be GST-free, which is common for some food businesses, exporters and medical services. Neither is a problem; it just helps the lender understand the mix.

Four quarters of G1 added together gives an approximate annual turnover. That’s often the figure an unsecured lender will anchor to, alongside bank deposits.

Illustrative worked example

Illustrative figures only; not a real business.

Quarter	G1 total sales	1A GST on sales	1B GST on purchases	W1 wages
Jul–Sep	$132,000	$12,000	$5,400	$38,000
Oct–Dec	$156,200	$14,200	$6,900	$41,500
Jan–Mar	$118,800	$10,800	$4,800	$36,000
Apr–Jun	$143,000	$13,000	$6,100	$39,000

A lender reading this sees annual sales of about $550,000, mostly taxable (1A is close to one-eleventh of G1 each quarter), a busier December quarter and a quieter March quarter, and a steady wages bill of roughly $150,000 a year. 1B suggests purchases subject to GST are a modest share of sales, which fits a service business.

That’s a lot of information from four forms, and none of it needed a tax return.

What do lenders cross-check the BAS against?

A BAS is self-reported. Lenders trust it more when an independent source agrees.

• Bank statements. Business deposits for the same three months should be in the same ballpark as G1. On a cash basis, they often line up closely. On an accruals basis, invoices unpaid at quarter end create timing differences.
• Card and platform settlements. For retail and hospitality, settlement reports should account for much of G1.
• ATO account statement. Shows whether the GST and withholding reported were actually paid, or whether a balance is building up. See ATO online records.
• The enquiry form. If you tell a lender turnover is $900,000 and four BAS add to $550,000, the file stalls.

If you want to check how your own evidence lines up before a lender does, the substitute checker is a quick place to start.

Which patterns raise questions?

None of these automatically stop a loan, but each will prompt a question. Better to have the answer ready.

• A sharp drop in G1. Was it seasonal, a lost customer, or something ongoing?
• G1 far above bank deposits. Cash not banked, a second account, or unpaid invoices?
• W1 reported but W2 is nil. Might be legitimate (for example, payments below withholding thresholds), but it’s worth understanding.
• 1B unusually high relative to 1A. A big equipment purchase or stock build-up? Lenders like to know.
• Late lodgements. The ATO’s quarterly due dates are 28 October, 28 February, 28 April and 28 July, with an extra two weeks for eligible online lodgement on most quarters. A pattern of late lodgement suggests admin strain.
• Missing quarters. A gap in the sequence is the first thing a lender notices.

What about businesses lodging annually or monthly?

The ATO says businesses with GST turnover of $20 million or more report monthly, while those under that report quarterly by default. Voluntarily registered businesses under the $75,000 threshold may be able to report GST annually.

Monthly lodgers give lenders even more granular information. Annual lodgers, by contrast, don’t have quarterly BAS to show, so their bank statements carry more of the weight, much like a business that isn’t registered for GST at all.

Some quarterly lodgers use the GST instalment method, where the ATO works out an instalment amount and you don’t report actual sales each quarter. If that’s you, your quarterly BAS won’t show actual G1 figures, so lenders will lean on your annual GST return and bank statements instead. Mention it upfront to avoid confusion.

How do you present BAS to a lender?

A tidy BAS pack makes an analyst’s job easy, and easy files move faster.

1. Download the lodged versions from ATO online services, not drafts from your software.
2. Provide four consecutive quarters, or eight if your trade is seasonal.
3. Add a one-line summary table: quarter, G1, W1, lodged date.
4. Supply bank statements for the same months so the cross-check is simple.
5. Explain outliers in a sentence each: a lost contract, a big equipment purchase, a closure for renovations.
6. Include your ATO account statement if there’s any balance owing, with the payment plan if one exists.

Our page on using BAS instead of tax returns covers where BAS fit among other evidence, and what they can’t show on their own.

Is it worth getting BAS in order before you need finance?

Yes, and it’s one of the easiest wins. If you’re registered for GST, every BAS lodged accurately and on time is a free piece of lending evidence building up in the background. If you’re behind, catching up the latest quarters first gives you the most useful evidence soonest; older quarters matter less to a lender than recent ones.

If lodgements are overdue, our page on overdue tax returns or BAS explains how lenders treat catch-up plans.

Turning your BAS into a funding conversation

If your BAS are lodged but the tax return isn’t, you may already have what a low doc lender needs. The next step is simple: tell us what you have and what you need. It takes about a minute. We don’t run a credit check when you first enquire, and we don’t pass your details to a string of lenders; one team reads your file and a real person calls you.

Please use your actual BAS figures when estimating turnover on the form. When the numbers you give match the numbers you lodged, we can go straight to a lender that accepts BAS as evidence. See what your BAS could support.