A business activity statement example can turn a confusing ATO form into something far more practical. If you run a small business in Australia, your BAS shows the GST you collected, the GST credits you claim, and, in some cases, PAYG withholding from wages. We have seen many business owners relax once they understand the labels.
This guide breaks down a real BAS layout using plain numbers, clear steps, and bookkeeping checks you can use before lodgement.
Why A BAS Matters Before You Hit Lodge
A BAS is one of those forms that can make even a confident business owner pause. The labels look short, but they carry real weight. G1, 1A, 1B, W1 and W2 are not random boxes. They tell the ATO what happened in your business during the reporting period.
In our work with Australian small businesses, we often see the same pattern. A business owner keeps trading, sends invoices, pays suppliers, runs payroll, and then BAS time arrives like a bill in the letterbox after a long weekend. The numbers feel separate from the day-to-day work. They are not. Your BAS is built from the sales, purchases and wages already sitting in your books.
A good BAS process helps you answer three practical questions:
- How much GST did we collect from customers?
- How much GST did we pay on business purchases?
- What tax amounts do we need to send to the ATO?
That is why BAS should not be left to the last minute. If the books are messy, BAS turns into detective work. If the books are clean, BAS becomes a check-and-lodge task.
Who Needs To Lodge A Business Activity Statement?
Most Australian businesses need to lodge a BAS once they register for GST. For many small businesses, GST registration becomes required when annual GST turnover reaches $75,000 or more. Non-profit organisations use a higher threshold of $150,000.
Some businesses must register even if they earn less than the usual threshold. Taxi and rideshare drivers, including Uber drivers, must register for GST from the first dollar of that work. Others register voluntarily because it suits their plans, their clients, or the way they manage expenses. Once GST registration applies, BAS lodgement usually comes with it.
This is where many new business owners get caught. They think BAS only matters once the business feels “big”. In practice, it can arrive while the business still feels young and scrappy. A sole trader may start with weekend jobs, then pick up regular clients, then cross the GST threshold before they have proper bookkeeping habits in place.
We have seen this happen with service businesses, trades and small retail operators. The owner is busy doing the work, not watching turnover month by month. Then the numbers tip over the threshold, and BAS becomes part of the calendar.
The $75,000 GST Turnover Rule For Small Businesses
Picture a small catering business in Melbourne’s south-east. In the first year, it earns $52,000. The owner does not need to register for GST yet, unless they choose to do so. In the second year, the business starts supplying corporate lunches and weekend events. Sales climb to $82,000. At that point, GST registration becomes a serious compliance matter, not a “later” job.
Once registered, the owner needs to charge GST on taxable sales, keep valid tax invoices, record GST on purchases, and lodge BAS on time. That is a lot easier when Xero, MYOB or QuickBooks has been set up correctly from the start.
Taxi, Rideshare And Voluntary GST Registration
Taxi and rideshare drivers sit in a different category. They must register for GST regardless of turnover. That rule surprises many drivers who treat rideshare income as a side income. The ATO still expects the correct GST reporting.
Voluntary registration can also make sense for some businesses below the threshold. For example, a startup that buys equipment and works mostly with GST-registered clients may choose to register early. The catch is simple: once you register, you need to lodge.
Common BAS triggers include:
- Annual GST turnover of $75,000 or more.
- Non-profit GST turnover of $150,000 or more.
- Taxi or rideshare services.
- Voluntary GST registration.
- Payroll obligations that create PAYG withholding reporting.
The golden rule is this: do not wait until BAS is due to work out whether your records are ready.
Business Activity Statement Example: The Main BAS Labels Explained
A real BAS uses short labels. These labels help the ATO match your sales, GST, purchases and payroll figures to the right tax category. The labels may look dry, but they tell a clear story once you know what each one means.
Not every BAS shows every label. Your form depends on your registration, reporting cycle and business obligations. A sole trader with no staff may see fewer fields than a business with employees, PAYG withholding and instalments.
G1 Shows Your Total Sales For The Period
G1 is where total sales for the BAS period are reported. Depending on the BAS reporting method used, this figure may be GST-inclusive or GST-exclusive, so it should be checked against your ATO settings and accounting software.
For example, a small retail business may have $50,000 in reportable sales for the quarter. The amount shown at G1 should match the business’s BAS reporting method and GST setup. The owner should check that the sales report matches bank deposits, invoices, POS data and online payment records.
This is where cloud accounting can help, but only if the feeds and GST codes are right. Software can save time. It can also repeat the same mistake every month if nobody checks the setup.
1A Shows The GST You Collected From Customers
1A shows the GST on sales. For many taxable sales, GST is one-eleventh of the GST-inclusive price. If a business makes $55,000 in taxable sales including GST, the GST portion is generally $5,000.
That $5,000 is not extra profit. It is tax collected from customers and held for the ATO. This point matters. If a business spends every dollar that lands in the bank account, BAS time can bite.
G11 Shows Non-Capital Purchases
G11 shows non-capital purchases. These are normal operating costs, such as stock, supplies, rent, subscriptions, fuel, repairs, packaging and contractor costs.
A café may include coffee beans, milk, takeaway cups and cleaning supplies. A plumber may include fittings, tools under the asset threshold, fuel and trade supplies. The point is to record business purchases in the right place and avoid mixing them with personal spending.
1B Shows The GST Credits You Want To Claim
1B shows GST credits on eligible business purchases. If a supplier charged GST and you have a valid tax invoice, you may be able to claim the GST back as a credit.
A bank feed description is not enough on its own. You need proper records. We often tell clients that the invoice is the proof, while the bank transaction is only the payment trail.
W1 And W2 Show Payroll And PAYG Withholding
W1 shows gross wages and similar payments made to employees. W2 shows the PAYG withholding taken from those wages.
For example, if a business paid $18,000 in gross wages and withheld $3,000 in tax, those figures may appear at W1 and W2. Payroll must be checked carefully because BAS, Single Touch Payroll and superannuation records should all make sense together.
T1 And 5A Can Apply To PAYG Instalments
Some businesses also see PAYG instalment labels on their BAS. PAYG instalments are prepayments for expected income tax. They are different from PAYG withholding, which relates to tax withheld from employee wages.
T1 can show instalment income for the period. 5A can show the PAYG instalment amount payable. The ATO may calculate this amount, or the business may use an instalment rate method, depending on its setup.
This is one reason two businesses with similar sales can have different BAS forms. A sole trader, a company with staff, and a larger business with instalment obligations may each see different labels.
A Simple BAS Example Using Real Numbers
A business activity statement example is easier to follow when the numbers sit in one place. Let’s use a simple quarterly BAS for a small Melbourne business.
This business sells taxable goods, pays operating expenses, and has employees. It uses cloud accounting software, but the owner still checks the BAS report before lodging. That last step matters. As the saying goes, measure twice, cut once.
Sample Quarterly BAS For A Small Melbourne Business
| BAS Label | What It Means | Example Amount |
| G1 | Total sales | $50,000 |
| 1A | GST on sales | $5,000 |
| G11 | Non-capital purchases | $20,000 |
| 1B | GST on purchases | $2,000 |
| W1 | Gross wages | $18,000 |
| W2 | PAYG withheld from wages | $3,000 |
In this example, the business collected $5,000 in GST from customers. It also paid $2,000 in GST on eligible business purchases. The net GST payable is $3,000.
The business also withheld $3,000 from employee wages. That amount must be reported and paid to the ATO.
The simple BAS result is:
| Calculation | Amount |
| GST collected at 1A | $5,000 |
| Less GST credits at 1B | -$2,000 |
| Net GST payable | $3,000 |
| Add PAYG withholding at W2 | $3,000 |
| Total payable to ATO | $6,000 |
This is the point where many owners have an “aha” moment. The BAS is not asking for a random amount. It is adding up the tax collected through sales and payroll, then reducing the GST part by the eligible GST credits.
The BAS Calculation In Three Steps
Here is the same calculation in a short sequence:
- Start with GST collected: 1A = $5,000.
- Subtract GST credits: 1B = $2,000.
- Add PAYG withholding: W2 = $3,000.
Final result:
$5,000 – $2,000 + $3,000 = $6,000 payable.
A business can still feel tight on cash even when it has made sales. That often happens when GST has been sitting in the main account and slowly gets used for wages, rent, stock or fuel. By the time BAS arrives, the money has already walked out the door.
A separate GST account can help. Each week, move a portion of sales into that account. It does not need to be fancy. It just needs to stop GST from blending into working cash.
BAS Vs IAS: Why The Two Forms Get Mixed Up
BAS and IAS are easy to confuse because both are activity statements. They can arrive from the ATO, use tax labels, and relate to business obligations. The difference is mainly about GST.
BAS Includes GST For GST-Registered Businesses
A BAS includes GST reporting. If your business is registered for GST, you will usually use BAS to report GST collected, GST credits and other tax items that apply to your business.
It may also include PAYG withholding, PAYG instalments, fringe benefits tax instalments or other amounts. For many small businesses, though, the main focus is on GST and payroll withholding.
IAS Is Used When GST Is Not Part Of The Picture
An Instalment Activity Statement, or IAS, may apply when a business or individual has PAYG obligations but is not registered for GST.
A simple way to remember it is this:
“If GST appears on the form, you are generally dealing with BAS. If GST is not part of the form, it may be an IAS.”
For example, a consultant who is not registered for GST but pays PAYG instalments may receive an IAS. A GST-registered retailer will usually lodge a BAS.
The form type matters because you do not want to report figures in the wrong place. If you are unsure, check your ATO account, your accounting software, or your BAS agent before lodging.
BAS Due Dates Most Small Businesses Need To Know
BAS due dates depend on your reporting cycle. Most small businesses lodge quarterly, but some lodge monthly or annually. The due date also appears on the BAS itself, so it is worth checking the ATO account rather than relying on memory.
Quarterly BAS Due Dates
| Quarter | Period Covered | Standard Due Date |
| Quarter 1 | July to September | 28 October |
| Quarter 2 | October to December | 28 February |
| Quarter 3 | January to March | 28 April |
| Quarter 4 | April to June | 28 July |
Quarterly BAS can sneak up quickly. October is a good example. Many Melbourne businesses come out of winter, move into busier spring trading, and then the September BAS is due before they have caught their breath.
The best habit is to close off each month properly. Reconcile the bank account, check payroll, file invoices, and review GST codes. Then the quarterly BAS is not a scramble.
Monthly And Annual BAS Cycles
Monthly BAS usually applies to larger businesses, including those with GST turnover of $20 million or more. These statements are generally due on the 21st day of the following month.
Annual GST reporting may apply to eligible businesses that registered for GST voluntarily. This is less common for growing businesses, but it can suit some smaller operators.
If you lodge through a registered BAS agent, you may have access to different lodgement dates under the ATO lodgement program. Do not assume this applies automatically. Check with your agent and keep the deadline in writing.
How To Lodge A BAS Without Guessing The Numbers
You can lodge a BAS in several ways. The right option depends on your business size, software, confidence and reporting needs.
Lodging Through ATO Online Services
Some sole traders lodge through myGov linked to the ATO. Other businesses use Online services for business. This can work well if your records are clean and the BAS is simple.
Still, the form should never be treated as a guessing game. Before lodging, compare the BAS report with sales, purchases, payroll and bank reconciliations.
Lodging Through Xero, MYOB Or QuickBooks
Cloud accounting software can make BAS preparation much easier. Xero, MYOB and QuickBooks can help pull together sales, GST, purchases and payroll figures.
But software does not fix poor setup. If a GST code is wrong, the software may keep using it. If payroll is not checked, W1 and W2 may not match what you expected. Garbage in, garbage out.
This is why we place so much value on setup and training. A well-built system helps the business owner see problems early, not after the BAS has been lodged.
Lodging Through A Registered BAS Agent
A registered BAS agent can prepare, review and lodge your BAS. They can also help check GST coding, payroll figures, tax invoices and ATO obligations.
This is useful if your business has employees, inventory, multiple payment systems, or little time for bookkeeping. It is also helpful when your BAS keeps producing figures that do not feel right. A second set of trained eyes can save a lot of back-and-forth.
Common BAS Mistakes That Can Cost You Time And Cash Flow
BAS errors often start with everyday habits. The form may be lodged quarterly, but the records are created daily.
Claiming GST Credits Without A Valid Tax Invoice
You generally need a valid tax invoice to claim GST credits for purchases over $82.50, including GST. A bank transaction alone does not prove the GST amount. If the invoice is missing, chase it before lodging.
Mixing Personal And Business Spending
Mixed spending makes BAS messy. A tradie who uses one card for fuel, tools, groceries and school shoes will have more sorting to do. It is much easier to keep business and personal spending separate from day one.
Treating Every Sale The Same
Some sales may be taxable. Others may be GST-free or input-taxed. A food business, for example, may sell items with different GST treatment. If the point-of-sale setup is wrong, the BAS can be wrong too.
Forgetting PAYG Withholding
Employers need to check payroll before BAS lodgement. Wages, PAYG withholding, superannuation and Single Touch Payroll records should line up. If they do not, fix the issue before it grows legs.
Lodging Late Because Cash Flow Is Tight
If cash flow is tight, do not put your head in the sand. Lodging late can create extra stress. Lodge on time where possible, then speak with the ATO or your BAS agent about payment options.
A BAS Preparation Checklist Before You Lodge
Use this checklist before each BAS lodgement:
- Reconcile all business bank accounts.
- Check sales invoices and point-of-sale reports.
- Review GST codes on income and expenses.
- Confirm supplier tax invoices are saved.
- Remove personal expenses from business claims.
- Check payroll, PAYG withholding and superannuation.
- Review GST-free and input-taxed transactions.
- Compare BAS reports with profit and loss reports.
- Round amounts to whole dollars.
- Save a copy of the lodged BAS and supporting reports.
This checklist is simple, but it works. It turns BAS from a rush job into a repeatable process.
What A Good BAS Process Looks Like Each Quarter
A calm BAS process starts before the due date.
| Timing | What To Do |
| Week 1 after quarter-end | Reconcile bank accounts and sales platforms |
| Week 2 | Review GST coding, supplier invoices and payroll |
| Week 3 | Run BAS reports and check unusual amounts |
| Before due date | Lodge BAS and schedule payment |
| After lodgement | Save reports and note fixes for next quarter |
For businesses with inventory, job-based billing or multiple sites, this process matters even more. A manufacturer may buy materials in one quarter, invoice in another, and carry stock across several jobs. If the system is loose, BAS figures can tell the wrong story.
Final Takeaway: A BAS Is Easier When Your Books Are Clean
A BAS is easier to read once you know what the labels mean. G1 shows sales. 1A shows GST collected. 1B shows GST credits. W1 and W2 relate to wages and PAYG withholding.
The form itself is not the hard part. The real work sits in the records behind it. Clean bookkeeping, correct GST codes, saved invoices, and checked payroll make BAS far less stressful.
For Australian small businesses, that means fewer surprises, better cash flow planning and more confidence at lodgement time.
