home---〉office----〉home,这都没办法减税,private useage, no tax deductable
home---〉office-----〉business place a------〉self education palce--->home, only the travle expense between office-----〉business place a------〉self education palce is tax deductable, understand?
asutralia tax is too complicated for comon people, if u get simple tax situation, u can do it youself; otherwise, u had better go for a professional advice