ATO logo
Search Suggestion:

Why due dates change

Here's what your practice needs to know about income tax return due dates and what can affect them.

Last updated 11 August 2025

We provide the registered agent lodgment program to help you manage your workload. It allows you to progressively lodge your clients' obligations over a 12-month period.

It's important to regularly check your clients' lodgment due dates as they may change if your clients' circumstances change.

Various factors can affect the due date you receive for a client, for example:

  • the type of entity
  • when you added them to your client list
  • whether
    • they are new registrants
    • they have overdue prior year returns
    • their last return was taxable or non-taxable.

See the following examples of income tax return due dates and which clients they generally apply to.

31 October

This due date applies to entities:

  • with overdue prior year returns
  • added to your client list after 31 October
  • we've advised of this due date, for example if
    • they've been prosecuted for non-lodgment
    • a new registrant self-managed superannuation fund (SMSF) was reviewed at registration.

Tip: If you lodge your clients' overdue prior year returns by 31 October, their current year return will receive your lodgment program due date.

31 January

This due date applies to:

  • taxable large and medium entities (except individuals) as per their latest year lodged
  • the taxable head company of a consolidated group (including a new registrant), with a member who has been deemed a medium or large entity in the latest year lodged.

28 February

This due date applies to:

  • non-taxable large and medium entities (except individuals) as per their latest year lodged
  • new registrant large and medium entities (except individuals)
  • the non-taxable head company of a consolidated group (including a new registrant), with a member who has been deemed a large or medium entity in the latest year lodged
  • any member of a consolidated group that exited the group during the year of income
  • the large or medium new registrant non-taxable head company of a consolidated group
  • new registrant SMSFs.

31 March

Excluding large and medium taxpayers, this due date applies to:

  • individuals and trusts whose latest return resulted in a tax liability of $20,000 or more
  • companies and super funds with total income over $2 million in the latest year lodged
  • the head company of a consolidated group with a member who had a total income over $2 million in the latest year lodged.

15 May

This due date applies to all entities that do not have to lodge earlier and are not eligible for the 5 June concession.

More information

You can find more details about Registered agent lodgment program due dates on our website. They are listed by month, tax return and obligation type.

We also have information and tips to help you manage your lodgment program.

QC105356