GST Calculator Australia

Understanding Australian GST

The Goods and Services Tax (GST) is a broad-based 10% tax on most goods, services and other items sold or consumed in Australia. Introduced on 1 July 2000, GST is administered by the Australian Taxation Office (ATO) and collected at each stage of the supply chain. Businesses registered for GST collect the tax on behalf of the government and can claim credits for GST paid on their business purchases.

How to Calculate GST

To add GST to a price, simply multiply the amount by 1.10. For example, an item priced at $100 excluding GST costs $110 including GST. To find the GST component in a GST-inclusive price, divide the total by 11. For that same $110 item, $110 / 11 = $10 is the GST component. To find the pre-GST price, divide the inclusive price by 1.10 or simply subtract the GST component.

GST-Free Items

Not everything attracts GST. Most basic food items including fresh fruit, vegetables, meat, bread and dairy are GST-free. Other exempt categories include most health and medical services, educational courses leading to a qualification, certain childcare services, exports, and some charitable activities. Input-taxed supplies such as residential rent and most financial services have their own treatment.

Use this calculator to quickly add or remove GST from any amount when preparing invoices, checking receipts, or comparing pre-GST and post-GST prices for your business or personal finances.