21 November 2026
- Lodge and pay October 2026 monthly business activity statement.
25 November 2026
- Lodge and pay quarter 1, 2026–27 activity statement if you lodge electronically.
1 December 2026
- Pay income tax for taxable large and medium taxpayers, companies and super funds. Lodgment of return is due 31 January 2027.
- 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 2027.
- Pay income tax for companies and super funds when lodgment of the tax return was due 31 October 2026.
21 December 2026
- Lodge and pay November 2026 monthly business activity statement.
