15 May

• Lodge 2026 tax returns for all entities that did not have to lodge earlier (including all remaining consolidated groups) and are not eligible for the 5 June concession. Companies and super funds pay by this date if required; individuals and trusts pay as advised on their notice of assessment.

21 May

• Lodge and pay April 2027 monthly business activity statement.
• Final date to add new FBT clients to your client list to secure the lodgment and payment concessions for their FBT returns.
• Lodge and pay Fringe benefits tax annual return, if lodging by paper.

26 May

• Lodge and pay eligible quarter 3, 2026–27 activity statements, if lodging electronically.