Australia's Goods and Services Tax has been a flat 10% since its introduction in 2000.
Businesses must register for GST once their annual turnover reaches $75,000 (or $150,000 for non-profit organisations). Below this, registration is optional.
Some supplies (like residential rent and most financial services) are "input-taxed" — no GST is charged, but the supplier also can't claim GST credits on related purchases.
Registered businesses report and pay GST through periodic Business Activity Statements — typically quarterly, though some businesses report monthly or annually.
Calculate GST on any price.
Use the GST Calculator →GST classifications have detailed rules. Verify your specific goods/services classification with the ATO or a tax advisor.