A New Tax System (Goods and Services Tax) Act 1999

Chapter 6 - Interpreting this Act  

Part 6-2 - Meaning of some important concepts  

Division 190 - 90% owned groups of companies  

190-1   90% owned groups  
Two companies are members of the same 90% owned group if:

(a) one of the companies has * at least a 90% stake in the other company; or

(b) a third company has * at least a 90% stake in each of the two companies.