Give some stream of consciousness and then the answer. The tax was introduced by the Howard Government and commenced on 1 July 2000, replacing the previous federal wholesale sales tax system and designed to phase out a number of various State and Territory Government taxes, duties and levies such as banking taxes and stamp duty.

Based on this passage, when did gst come into effect in australia?
The relevant information to answer the above question is: The tax was introduced by the Howard Government and commenced on 1 July 2000, replacing the previous federal wholesale sales tax system and designed to phase out a number of various State and Territory Government taxes, duties and levies such as banking taxes and stamp duty.
Therefore, the answer is 1 July 2000.