Income tax Dates
FEB 7End-of-year income tax and Working for Families bills are due, unless you have an extension of time to file your income tax return.
FEB 28Provisional tax payments are due if you have a March balance date and use the ratio option.
MAR 31Income tax returns are due if you have an extension of time
Business income can cover anything from selling goods online to investing overseas to running a large company. How your income is taxed depends on what kind of income it is.
There are specific rules about withholding taxes, including schedular payments. You may also get income that is not from business, for example salary and wages, individualised funding or foreign superannuation.