5 June 2021
• Lodge tax return for all entities with a lodgement due date of 15 May 2021 if the tax return is not required earlier
21 June 2021
• Lodge and pay May 2021 monthly business activity statement
25 June 2021
• Lodge and pay 2021 Fringe Benefits Tax annual return
30 June 2021
• Super guarantee contributions must be paid by this date to qualify for a tax deductions in the 2020-21 financial year.