24 March, 2026
21 March: Lodge and pay February 2026 monthly business activity statement.
31 March : Lodge tax return for companies and super funds with total income of more than $2 million in the latest year lodged (excluding large and medium taxpayers), unless the return was due earlier.
- Payment for companies and super funds in this category is also due by this date.
Lodge tax return for individuals and trusts whose latest return resulted in a tax liability of $20,000 or more, excluding large and medium trusts.
- Payment for individuals and trusts in this category is due as advised on their notice of assessment.
21 April : Due date for quarter 3 (Jan – March 2026) PAYG instalment activity statement for head companies of consolidated groups.
- Lodge and pay March 2025 monthly business activity statement.
28 April : Pay quarter 3 (Jan – March 2026) PAYG instalment
