Australia GST Guide 2026: 10% GST, BAS, Registration & Input Tax Credits

Published July 10, 2026 · TaxCalc Pro Editorial Team

The Goods and Services Tax (GST) is Australia's broad-based value-added tax on most goods, services, and digital products consumed in the country. Introduced in 2000 at a flat 10% GST rate, it remains unchanged for the 2026 financial year — but the rules around registration, reporting, and credits shift regularly. Whether you run a small business in Sydney, a tech startup in Melbourne, or a freelance operation from Perth, getting GST right is essential for ATO compliance. This guide explains everything, and you can use our tax calculator at TaxCalc Pro to model your GST obligations in minutes.

We cover the GST rate, registration thresholds, GST-free and input-taxed categories, the Business Activity Statement (BAS) process, input tax credits, common traps, and practical tips to streamline GST operations. All figures reflect the Australian Taxation Office (ATO) 2025–26 and 2026–27 guidance and the latest Treasury updates.

1. What Is GST?

The GST is a 10% tax added to the price of most goods and services sold or consumed in Australia. It is collected by businesses, remitted to the ATO, and ultimately borne by the end consumer. Businesses registered for GST act as tax collectors — they charge GST on sales, claim credits for GST paid on business inputs, and remit the net to the ATO.

Some categories of sales are GST-free — no GST is charged, but the seller can still claim credits on inputs. Other categories are input-taxed — no GST is charged, but the seller cannot claim input credits. The remainder are fully taxable at the standard 10% GST rate.

2. The 10% GST Rate — 2026

The headline Australian GST rate remains 10% in 2026, unchanged since the tax's introduction in July 2000. Unlike some countries that have tiered VAT rates (reduced rates for food, books, etc.), Australia applies a single flat 10% across virtually all taxable supplies, with explicit exemptions carved out in legislation rather than rate variations.

3. GST Registration Threshold

Registration for GST is not automatic — small businesses only need to register once they reach the ATO threshold. The key rule: you must register if your GST turnover reaches or exceeds $75,000 per year. The threshold is $150,000 for non-profit organisations, while taxi and limousine operators and ride-sourcing drivers (e.g., Uber) must register regardless of turnover.

• $75,000 threshold — businesses: if your current or projected annual GST turnover is $75,000 or more, you must register within 21 days.
• $150,000 threshold — non-profits: charities and non-profit organisations use a higher threshold.
• $0 threshold — taxi/ride-sourcing: all taxi, limousine, and ride-sourcing drivers must be registered, regardless of turnover.
• Voluntary registration: if your turnover is below the threshold, you may still choose to register so you can claim input tax credits — but once registered, you must charge GST and lodge BAS.

Choosing to register voluntarily often makes sense for businesses with substantial input costs (e.g., equipment-heavy trades, importers) where the benefit of claiming credits outweighs the administrative cost of BAS lodgment. Modeling this trade-off is one of the most valuable uses of our tax calculator.

4. Business Activity Statement (BAS)

The BAS is the ATO's reporting mechanism for GST and other obligations. Most registered businesses lodge quarterly, but small businesses with GST turnover under $10 million can opt to lodge monthly or use the simplified "GST instalments" method annually.

BAS Lodgment Frequencies

What Your BAS Reports

• G1 — Total sales
• 1A — GST on sales (collected)
• 1B — GST on purchases (input tax credits claimed)
• Net GST = 1A − 1B (this amount is payable or refundable)
• Then PAYG instalments, PAYG withholding, and fringe benefits tax instalments, if applicable

A positive net GST amount means you owe the ATO. A negative figure means you are due a refund — common when a business has purchased significant equipment or inventory in the period but has not yet sold it.

5. Input Tax Credits

When your business is GST-registered, you can claim a credit for the GST included in the price of goods and services you buy for business use. This is the mechanism by which GST avoids becoming a cost-of-doing-business tax — it is only meant to fall on the final consumer.

How to Claim Input Tax Credits

• You must have a tax invoice for purchases above $82.50 (GST-inclusive) — under the ATO's 2026 threshold, the same streamlined rules continue. For small purchases under $82.50, your bank/credit card statement is usually sufficient.
• The purchase must be for a business purpose; private or domestic use is not claimable.
• For purchases partially used for business, use a reasonable apportionment method (e.g., 80% business use on a vehicle).
• Natural resource, financial, and residential rent supplies are input-taxed — you generally cannot claim credits for inputs used in these supplies.

6. GST-Free Sales

GST-free supplies mean no GST is charged, but the seller still claims full input tax credits. The major categories are:

• Most basic food — fresh fruit and vegetables, bread, milk, eggs, meat, cooking ingredients. Some prepared foods (snack bars, restaurant meals, takeaway) are taxable.
• Health & medical — Medicare-eligible services, prescription pharmaceuticals, most medical, dental, and physiotherapy services.
• Education — course fees for accredited courses, most childcare, school excursions linked to curriculum.
• Exports — goods and services consumed overseas.
• Childcare — where provided by a licensed service.
• Religious services — and some charitable activities.
• Farmland — sales of farmland used for primary production.

Getting classification right is a frequent source of ATO audits. For food sellers, the ATO maintains a detailed Food Classification Schedule; SaaS exporters should document evidence of overseas consumption to support GST-free treatment.

7. Input-Taxed Sales

Input-taxed (or "financial supplies") supplies have two key effects:

• No GST is charged on the sale.
• The seller cannot claim input tax credits on purchases used to make the supply (subject to the financial acquisitions threshold).

Common input-taxed categories:

• Financial supplies — loans, interest, life insurance, securities trading
• Residential rent (long-term residential, not commercial)
• Sale of residential premises (existing homes — not new construction)
• Some precious metals

The financial acquisitions threshold allows businesses to claim limited credits when their financial acquisitions remain under $50,000 a year or 10% of total acquisitions. Above that threshold, the sale is input-taxed and credits are denied.

8. GST on Digital & Cross-Border Supplies

Since 2017, Australia applies GST to imports of low-value goods brought in by consumers (under $1,000 AUD), collected from the overseas seller rather than at customs. From 2023 the regime extends to offshore intangible supplies — software, apps, streaming, consultancy — delivered to Australian consumers. The same 10% GST rate applies.

Overseas businesses selling to Australian consumers exceeding $75,000 AUD must register for GST and remit. Major platforms (e.g., Amazon, Apple, Google, Netflix) handle this automatically as intermediaries; smaller vendors should assess whether registration is required.

9. Margin Scheme & Property

Sales of new residential premises and commercial property are fully taxable at 10% GST. For sales of existing property held as an investment (or otherwise input-taxed), no GST applies.

The margin scheme allows sellers of property to apply GST to the margin (sale price minus purchase price or the consideration for the property) rather than the full sale price, effectively reducing the GST payable. Eligibility requires both buyer and seller to agree in writing before settlement. For property developers, careful use of the margin scheme can materially reduce GST liabilities.

10. Common Errors and How to Avoid Them

• Reporting GST on a cash basis when agreeing accrual. The ATO allows small businesses to choose cash or accrual accounting. Pick and apply consistently; basis changes require notification.
• Claiming credits without a tax invoice for purchases above the $82.50 threshold. The ATO regularly disallows such claims; keep invoices for 5 years.
• Charging GST when not registered. If you have not registered, you cannot charge GST. Charging without registration is illegal.
• Treating input-taxed sales as GST-free. Both have 0% GST on the sale, but the seller's entitlement to input credits differs — input-taxed supplies generally preclude credit claims on related purchases.
• Mixing business and private use. Apportion mixed-purpose purchases (vehicles, mobile phones, internet) and keep records supporting the business percentage.
• Forgetting to report adjustments. Refunds, write-offs, bad debts, and personal use adjustments all flow through BAS rather than via amendments.

11. 2026 Key Dates & Deadlines

• Quarter 1 BAS (Jul–Sep 2026): due 28 October 2026
• Quarter 2 BAS (Oct–Dec 2026): due 28 January 2027
• Quarter 3 BAS (Jan–Mar 2027): due 28 April 2027
• Quarter 4 BAS (Apr–Jun 2027) + Annual: due 28 July 2027 (or 31 October for annual GST return)
• Monthly BAS: due 21st of the following month
• Activity statement refunds: typically issued within 14 business days of lodgment

12. Practical GST Tips for Small Business

• Use accounting software. Xero, MYOB, QuickBooks, and similar integrate with BAS — categorize each invoice correctly and reports populate automatically.
• Separate business accounts. Keep a dedicated business bank account to make expense tracking and audits much easier.
• Hold funds aside. Set aside 10–15% of each GST-inclusive sale in a separate savings account so GST payable is ready when your BAS falls due.
• Review your input credits each quarter. Common missed credits include software subscriptions, vehicle running costs, and contractor fees above $82.50.
• Document GST-free justification. Keep a written classification rationale for exempt food items, exports, and medical services.
• Plan capital purchases. Large equipment buys increase your input tax credit, often resulting in a refund BAS rather than a payable — useful for cash flow planning.

13. Frequently Asked Questions

What is the GST rate in Australia?

The standard GST rate is 10%, applied as a flat rate across most taxable supplies. There are no reduced rates — categories are either taxable at 10%, GST-free at 0%, or input-taxed at 0% (with credits denied).

When do I need to register for GST?

If your annual GST turnover reaches or is likely to reach $75,000 (or $150,000 for non-profits). Taxi, limousine, and ride-sourcing drivers must register regardless of turnover.

What is a BAS and when is it due?

The Business Activity Statement reports GST (and other taxes) to the ATO. Quarterly BASs are due by the 28th of the month after the quarter ends. Monthly BASs are due by the 21st of the following month.

What are input tax credits?

Credits for the GST paid on business purchases. If your business is GST-registered and you bought a taxable good or service for business use, you can claim back the GST component — reducing your net GST payable to the ATO.

Is food subject to GST?

Most basic food (fresh produce, bread, dairy, meat) is GST-free. Prepared, takeaway, and snack foods are taxable at 10%. The ATO Food Classification Schedule is the authoritative source.

Do exports attract GST?

No. Exports are GST-free, so no GST is charged and input tax credits remain claimable. Document evidence of overseas consumption to support the GST-free treatment in audits.

Conclusion

Australia's GST is straightforward in principle — 10% on most supplies — but the details matter. Understanding the registration threshold, BAS deadlines, input tax credit eligibility, and the GST-free vs. input-taxed distinction lets you manage compliance confidently and maximize your legitimate credits. Combine tools like accounting software with regular reviews and the TaxCalc Pro tax calculator to keep your GST position current and audit-ready.