The Australian Tax Office offers the following to help you make that decision.
Reasons you need to lodge
Reasons you need to lodge a tax return may include if you:
• had any tax taken out (withheld) from income you receive
• had $1 or more of foreign income
• pay or receive child support
• had business or investment income
• are leaving Australia and have a study or training support loan.
Information you need to lodge
Before you lodge, find out what's new for individuals this tax time.
To lodge your tax return, the ATO recommends you have all of the following information available.
You will need your:
• bank account details (BSB and account number)
• income statement or payment summaries from all of your employers
• payment summaries from Centrelink (Services Australia)
• receipts or statements for the expenses you are claiming as deductions
• your spouse's income (if you have one)
• private health insurance information (if you have cover).