Australia's GST: The Basics
Australia's Goods and Services Tax (GST) is a broad-based 10% tax on most supplies of goods, services, and other things. Introduced in 2000, it replaced a complex system of wholesale sales taxes and is administered by the Australian Taxation Office (ATO). For business owners, GST creates both an obligation (to collect and remit) and a benefit (to reclaim GST paid on business inputs).
The $75,000 Registration Threshold
GST registration is mandatory when your GST turnover (revenue from taxable supplies) reaches or exceeds $75,000 in the current or previous 12 months, or when you expect to exceed it in the next 30 days. For non-profit organisations, the threshold is $150,000.
Voluntary registration below the threshold is available and often worthwhile — if your business has significant input costs from GST-registered suppliers, the ability to claim GST credits can generate quarterly cash refunds from the ATO before your turnover reaches the mandatory threshold.
Tax-Free Supplies: What Does Not Attract GST
Not everything is subject to GST. Key GST-free categories relevant to retail and food businesses:
- Basic food: unprocessed food, fresh fruit and vegetables, bread, milk, eggs, meat — GST-free
- Restaurant and prepared food: taxable at 10% (a significant distinction from grocery food)
- Beverages: most drinks including water and soft drinks are taxable; milk and fruit juice have specific rules
- Medical services and medications: largely GST-free
- Educational services: largely GST-free
- Exports: GST-free (zero-rated)
For food retailers and restaurants, the distinction between GST-free basic food and taxable prepared food is the most important classification to get right. Selling a meat pie over the counter is taxable. Selling raw meat from a butcher's counter is GST-free.
Business Activity Statements (BAS)
Once GST-registered, you report and pay GST through Business Activity Statements lodged with the ATO. Lodgement frequency:
- Monthly: if your GST turnover is $20 million or more
- Quarterly: if turnover is under $20 million (the most common for small businesses)
- Annually: if turnover is under $75,000 and you chose annual lodgement
Your BAS reports: total sales (G1), GST-free sales (G3), GST collected (1A), GST credits on purchases (1B), and the net GST payable or refundable. Your POS must categorise every sale as taxable or GST-free and produce a BAS-ready summary each quarter.
Single Touch Payroll (STP)
If you have employees, Single Touch Payroll reporting is also required — reporting payroll information to the ATO each pay run. While this is separate from GST, your overall compliance infrastructure (POS for sales, payroll software for wages) must both be ATO-compatible for a fully compliant Australian operation.
Keeping Digital Records
The ATO requires businesses to keep GST records for five years. This includes tax invoices received and issued, BAS lodgements, and payment records. The ATO has not mandated a specific digital format like HMRC's MTD, but electronic records — automatically generated by your POS — are far easier to maintain and retrieve for any audit than paper-based systems.
Conclusion
Australian GST compliance for most small businesses reduces to three practical requirements: correct classification of taxable vs. GST-free supplies, accurate quarterly BAS reporting, and five-year record retention. A POS that handles tax classification per item and produces a quarterly BAS summary automates the compliance burden to a manageable quarterly task.
