John is self-employed as a mechanic and wants to operate a business through a discretionary trust structure with a corporate trustee being ABC Pty Ltd. How does this structure work? Is he simply employed by the trust (who has an ABN), or should he operate from another company XYZ Pty Ltd from within the trust, and is this under another ABN? And is this legal in QLD and Australia? Also how is PAYG and GST applied? More than one question I know.. Thanks in Advance for any help.