There Is no official Australian Homeschool Curriculum.
However, NSW, WA, SA and NT currently have their homeschool registration linked to the Australian Curriculum. But NSW and WA use their states version of the Australian Curriculum.
On the other hand, QLD, Victoria, ACT and Tasmania home educators can decide whether or not to follow the Australian curriculum; although following the Australian Curriculum is encouraged.
If you are homeschooling in Australia you may need to incorporate the Australian curriculum into you homeschool plans. In order to do that you will need to become familiar with the it.
What is the Australian Curriculum?
The Australian Curriculum is managed by the federal Government. It attempts to standardise what is taught to children around Australia. Consequently, schools in Queensland, Northern Territory, Canberra (ACT), South Australia and Tasmania have all followed the Australian Curriculum as laid out in the federal government website. However, New South Wales, Western Australia and Victoria incorporate the national curriculum into their state syllabi.
The national curriculum is outcome based. It focuses on what students should achieve rather than focusing on what is taught.
You can find the full government curriculum here.
Curriculum Planning Articles
DIY Homeschool Curriculum Guides
My Homeschool Curriculum
If you are looking for a curriculum that has already worked out all the planning for you then My Homeschool Graded Courses are based on the Australian Curriculum content and outcome statements.
In short, it follows follows state and territory syllabus requirements while using a literature rich approach inspired by Charlotte Mason.