You can add or remove an income source or type at any time in myIR.
For example, you receive a salary but you start up a part-time business. You can add your new type of income, self-employment.
In myIR, go to your income tax account
Then select 'More...'
Select 'My income sources' under 'My income'
Add or remove an income type
Make the change and submit it
Log in to myIR
It's important you keep your contact, income type and bank account details updated.
If you're a Working for Families or child support customer you'll also need to tell us about changes to your family situation or income.