GST and BAS Explained: What Every Epping Business Owner Needs to Know

GST and BAS are two of the most common sources of confusion — and genuine anxiety — for small business owners in Australia. The concepts aren't inherently complicated, but the practical requirements trip people up constantly.

Whether you're just starting a business and trying to figure out when you need to register for GST, or you've been lodging BAS statements for years and still feel uncertain about the details, this guide aims to give you clarity on both.

What Is GST and When Does It Apply?

The Goods and Services Tax is a 10% tax applied to most goods and services sold in Australia. As a business, when you make a GST-taxable sale, you collect GST from the customer on behalf of the government. When you purchase goods or services for your business that include GST, you can claim that GST back (this is your input tax credit).

The difference between the GST you've collected and the GST you've paid is what you report and remit to the ATO.

When Do I Need to Register for GST?

You're required to register for GST when your annual GST turnover meets or exceeds $75,000 (or $150,000 for non-profit organisations). Turnover is calculated based on your current and projected 12-month revenue.

You can also voluntarily register for GST even if your turnover is below this threshold — and there are often good reasons to do so, particularly if your clients are GST-registered businesses that want to claim input tax credits.

If you drive for a rideshare platform like Uber, you must register for GST regardless of turnover — this is a specific ATO rule for that category.

What Is a Business Activity Statement (BAS)?

A BAS is the form businesses use to report and pay their GST obligations to the ATO. It also captures other tax obligations including PAYG withholding (tax withheld from employee wages), PAYG instalments (prepayments toward your own income tax), and fuel tax credits where applicable.

BAS lodgements are typically required quarterly, though monthly lodgement is required for businesses with annual GST turnover over $20 million, and can be elected by others who prefer monthly cycles.

Quarterly BAS Lodgement Deadlines

The standard quarterly deadlines are:

•       Q1 (July-September): Due 28 October

•       Q2 (October-December): Due 28 February

•       Q3 (January-March): Due 28 April

•       Q4 (April-June): Due 28 July

If you lodge through a registered tax agent, these deadlines may be extended. Another compelling reason to engage professional help with your

tax services Epping businesses rely on throughout the financial year.

What Goes Into a BAS?

Your BAS will typically include:

•       Total sales (G1) — your GST-inclusive sales for the period

•       GST collected on sales (1A) — the GST component of taxable sales

•       GST paid on purchases (1B) — input tax credits you're claiming

•       PAYG withholding amounts — if you have employees

•       PAYG instalments — prepayments toward your own income tax liability

The net amount — GST collected minus GST paid — is either a payment to the ATO or a refund, depending on whether you collected more than you paid.

GST-Free vs Input Taxed vs Taxable Supplies

Not everything has GST applied to it. Understanding these three categories is important:

•       Taxable supplies attract GST at 10% — most goods and services fall here

•       GST-free supplies include basic foods, many medical services, and exports — no GST applies, but you can still claim input tax credits

•       Input taxed supplies include residential rent and financial services — no GST is charged, and input tax credits generally cannot be claimed

Misclassifying the nature of your supplies is a common source of BAS errors.

Common BAS Mistakes and How to Avoid Them

Given the potential for penalties, it's worth knowing what the most common errors look like:

•       Claiming GST on purchases that don't include GST (like wages, super, or from unregistered suppliers)

•       Failing to account for private use of business assets

•       Misclassifying GST-free or input taxed items as taxable

•       Not reconciling the BAS figures to the accounting records before lodgement

Having a qualified

business tax accountant Epping prepare and lodge your BAS significantly reduces the risk of these errors — and the costly consequences they bring.

PAYG Withholding and Your BAS

If you have employees, you're required to withhold income tax from their wages and report this on your BAS. Single Touch Payroll (STP) has streamlined reporting obligations significantly, but the underlying obligation to withhold correctly and remit on time remains unchanged.

The amount withheld from each employee depends on their income level and any tax file number declarations or withholding variation notices in place.

Annual GST Reporting Option

Businesses with a GST turnover below $75,000 that are voluntarily registered for GST may be eligible to report GST annually rather than quarterly. This reduces administrative burden but requires a single larger payment at year end.

This isn't the right choice for everyone — discuss it with your accountant to understand whether annual or quarterly reporting better suits your cash flow and business pattern.

Frequently Asked Questions

Do I charge GST on every sale I make?

Only on taxable supplies. If you sell a mix of taxable and GST-free items (common in food businesses, for instance), you need to correctly identify and code each sale.

Can I claim GST on all my business purchases?

You can claim input tax credits on purchases that include GST and are used for business purposes. Personal-use items, wages, super, and purchases from non-registered suppliers are not claimable.

What happens if I lodge my BAS late?

Late lodgements incur failure-to-lodge penalties. The ATO can also estimate your liability and issue a default assessment if you consistently fail to lodge, which is typically worse than your actual situation.

I run a cash-based business. Do I need to issue tax invoices?

Yes. GST-registered businesses must issue tax invoices for taxable sales of $82.50 or more (GST-inclusive). Tax invoices must include specific information including your ABN, GST amount, and description of goods or services.

My BAS shows I'm owed a refund — when will I receive it?

Refunds are generally processed within 14 business days of lodgement if your affairs are in order. New businesses or those with unusual claim patterns may experience longer processing times.

Let the Experts Handle Your BAS

Getting GST and BAS right matters. The rules are detailed, deadlines are firm, and the consequences of errors are real. But this doesn't have to be something you navigate alone.

Kirpa Tax & Accounting provides professional taxation services in Epping including BAS preparation and lodgement, GST advice, and PAYG management for businesses of all sizes.

📍 2/130 Gateway Boulevard, Epping  |  📞 03 7036 8036  |  📧 info@kirpatax.com.au