| Date | Category | Description |
| 12 May 2012 | Activity statements | Final date to lodge and pay quarter 3 (January - March 2012) activity statements. Refer to Lodge your activity statements online to see whether you are eligible for this later due date. |
| 21 May 2012 | FBT return | Due date for lodgment of 2012 FBT return and payment (if required). |
| 21 May 2012 | Activity statements | Final date to lodge and pay April 2012 monthly activity statements. |
| 28 May 2012 | Superannuation | Superannuation guarantee charge statement - quarterly (NAT 9599) — If required contributions were not made by the due date for quarter 3, 2011-12 (1 January - 31 March). The SGC cannot be deducted from tax. |