Goods and Services Tax (GST) is a 10% charge on taxable goods which include most goods, services and items sold or consumed within Australia. This tax is only applicable if your business has an annual turnover of $75,000 or if your business is a non-for profit organisation with an annual turnover of $150,000. Alternatively, if you’ve just started your business and project your turnover to reach the threshold within the first year of operation, you can register. You can also voluntary register for GST, even if you don’t reach the GST income threshold of $75,000.