The Australian Taxation Office has announced the following key dates to look out for in February 2026.

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21 February

• Lodge and pay December 2025 monthly business activity statement for business clients with up to $10 million turnover who report GST monthly and lodge electronically.
• Lodge and pay January 2026 monthly business activity statement.

Please note that as 21 February is a Saturday, the actual date will be Monday, February 23.

28 February

• Lodge tax return for non-taxable large and medium entities as per the latest year lodged (except individuals).
• Lodge tax returns for new registrant (taxable and non-taxable) large or medium entities (except individuals).
• Payment (if required) for companies and super funds is also due on this date.
• Lodge and pay Self-managed superannuation fund annual return for new registrant (taxable and non-taxable) SMSF, unless they have been advised of a 31 October 2025 due date at finalisation of a review of the SMSF at registration.
  • Note: There are special arrangements for newly registered SMSFs that do not have to lodge a return – see Super lodgment.
• Lodge and pay quarter 2, 2025–26 activity statement for all lodgment methods.
• Pay quarter 2, 2025–26 instalment notice (form R, S or T). Lodge the notice only if you vary the instalment amount.

Please note that as 28 February is a Saturday, the actual date will be Monday, March 2.