I'm almost certain the 30k annual investment limit will be reviewed and lifted on an annual basis to encourage more to people jump in. As far as I remember they used to do it in the UK with the ISA wrappers. After all they've modeled this after the UK/Europe methodology. Yes Moonraker is right. It will take roughly 16.7 years to reach your 500K limit which is probably not worth it for most of us here. But, all profit in this account will be tax free. If the investment grows by an average of 18%(using the avg STXIND return since inception) with your 30k p/annum investment cap it will grow to a nice tax free amount of over 2.4mil.