In Australia, the standard deadline to lodge individual tax returns for the 2024-25 financial year is 31 October 2025 if lodging the return oneself. The tax return covers the financial year from 1 July 2024 to 30 June 2025. If using a registered tax agent, eligible taxpayers can usually get an extension up to 15 May 2026. The tax return lodgement system opens on 1 July 2025. Extensions apply only if the taxpayer's previous years' returns are up to date and if the tax agent lodgement program permits it. For business-related tax deadlines, quarterly BAS statements and PAYG instalments have specific dates such as 28 October 2025 for Q1 BAS. Missing the 31 October deadline if self- lodging can result in penalties starting at $330 for 28 days late, up to a maximum of $1,650. Summary of key individual tax dates for 2025:
- Tax season opens: 1 July 2025
- Individual self-lodged tax return due: 31 October 2025
- Extended deadline via registered tax agent: up to 15 May 2026
These are the main tax deadlines for most individuals in Australia for the 2024-25 year.
