The CGT discount in Australia was introduced in 1999 under the Howard government , so John Howard’s Coalition was in power at the time.

What that means

  • The change took effect from 20 September 1999.
  • It replaced the old indexation method with a 50% discount for individuals, and later became a major feature of Australia’s CGT system.

Context

The broader capital gains tax itself was introduced earlier, in 1985 , under the Hawke Labor government.

So the tax and the discount were introduced by different governments.

TL;DR

Capital gains tax discount: Howard government, 1999.