Quote Originally Posted by Ajeh View Post
And you have each Zone for Australia added individually in the Zone Details, correct?
No Ajeh, never added each zone (state) individually for Australia in the Zone Details - never have since ZC 1.3.7 as the same tax rules apply in every state of Oz. What puzzles me is that it has worked without a glitch ever since, the issue only appeared since the upgrade from 1.5.4 to 1.5.5a .....