21 November 2025
- Lodge and pay October 2025 monthly business activity statement.
25 November 2025
- Lodge and pay quarter 1, 2025–26 activity statement if you lodge electronically.
28 November 2025
- Lodge and pay quarter 1, 2025–26 Superannuation guarantee charge statement if the employer did not pay enough contributions on time.
1 December 2025
- Pay income tax for taxable large and medium taxpayers, companies and super funds. Lodgment of return is due 31 January 2026.
- Pay income tax for the taxable head company of a consolidated group with a member deemed to be a large or medium taxpayer in the latest year lodged. Lodgment of return is due 31 January 2026.
