If your organisation needs to register for GST, FBT or PAYG withholding, it can do so by selecting these options on the ABN application form.
If your organisation already has an ABN and needs to register for GST or other taxes, you will need to complete the form Add a new business account (NAT 2954) which is available by phoning 13 28 66.
For information about what taxes your organisation should register for, see: