In Australia, for the 2024-25 financial year, individual tax returns are generally due by October 31, 2025, if lodging the return yourself. If using a registered tax agent, you can qualify for an extension, with deadlines potentially extended to as late as May 15, 2026. The tax year runs from July 1 to June 30. It's best to lodge from July 1, but many wait until mid to late July when pre-filled information is more complete. Missing the October 31 deadline can result in penalties. Businesses and entities have various other deadlines, including quarterly BAS lodgements.
