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Preparing your tax return

Find out what a tax return is, what information you'll need to prepare it and when it's due.

Published 12 February 2025

What is a tax return

A tax return is a form you complete online, on paper or get a tax agent or our Tax Help program to help you with. Your tax return tells us:

  • how much money (income) you earn
  • if you are claiming any deductions.

We use this information to check if you:

  • have paid enough tax or too much
  • need to pay the Medicare levy or surcharge
  • can get any tax offsets (for example, the low income tax offset).

If you pay more tax than you need to, we'll refund the extra amount to you (this is known as a tax refund). If you don't pay enough tax then you may receive a tax bill.

Your tax return covers the income year from 1 July to 30 June. If you need to complete a tax return you must lodge it or engage with a tax agent, by 31 October.

When you lodge a tax return you include how much money you earn (income) and any expenses you can claim as a deduction.

Information you need to lodge

Before you lodge, find out what's new for individuals this tax time.

To lodge your tax return, we recommend 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).

If you lodge your tax return online using myTax, we'll pre-fill most of this information for you. To lodge online you'll need to link the ATO to your myGov account.

Due dates for your tax return

If you’re lodging your own tax return, you need to lodge it by 31 October each year.

If 31 October falls on a weekend, the due date to lodge your tax return is the next business day after 31 October.

If you choose to use the services of a registered tax agent, they will generally have special lodgment schedules and can lodge returns for clients later than 31 October. If you're using a registered tax agent, you need to engage them before 31 October.

If you're having difficulties meeting your tax obligations or are unable to lodge by 31 October, contact us as soon as possible.

If you lodge your own tax return between 1 July and 31 October and it results in a tax bill, payment is due by 21 November unless the assessment issues after 31 October, in which case, payment is due 21 days after the date the assessment issues.

If you lodge your own tax return after the 31 October and it results in a tax bill, payment is still due by 21 November and interest can be imposed from that date.

If you miss the due date

If you miss the due date, it is important to lodge as soon as you can.

If you expect a tax bill, don't delay lodging. The due date for payment when you lodge your own tax return is 21 November if you lodge late. Interest can apply to any amount you owe after 21 November.

If you're finding it hard to pay on time you may be eligible to set up your own payment plan, tailored to your circumstances.

If you're still unsure why you have a tax bill or are having difficulty paying, contact us or speak with your registered tax agent.

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