Came across this twice last month so thought I'd post about it here just in case anybody else is worried about what they should be doing...

GST (Goods and Services Tax) - Do you have to register for it?

If your business has a GST turnover exceeding $75,000 per annum, the answer is YES.
If you are a non-profit organisation with a GST turnover exceeding $150,000 per annum, the answer is YES
If your business provides a taxi travel service irrespective of your annual turnover, the answer is YES

Don't forget that you won't be able to register for GST if you don't have an ABN

Useful .pdf linked below:
http://www.ato.gov.au/content/downlo...724nat3014.pdf